Barbell Good Morning vs Bodyweight Back Extension Strength Standards
Compare your good morning and bodyweight back extension against strength standards for your sex, age range, and bodyweight. Enter one result for each exercise to see your strength levels, next target, and which exercise is the priority.
Use each exercise's canonical input: Total barbell weight for Barbell Good Morning and No external load for Bodyweight Back Extension. Use a raw barbell good morning with the bar on the upper back, minimal knee bend, a braced neutral torso, and a consistent hamstring-limited depth; use a strict, repeatable bodyweight back extension test using the canonical setup, range, and finish rules. Repetitions are never converted into weight. Each exercise keeps its own measurement type. Age range changes only an exercise whose standards use age.
Barbell Good Morning vs Bodyweight Back Extension Strength Standards by Bodyweight
These tables show the minimum result each exercise needs to reach Novice, Intermediate, Advanced, and Elite. Weight-based standards are shown in pounds and kilograms. Direct-performance standards remain strict repetitions or seconds and show every applicable age range.
Find your bodyweight in the men’s or women’s table, then read across the strength levels. Results measured in weight, repetitions, or seconds are not meant to match and are never converted into one another. Use the calculator for your exact inputs and a direct comparison of the strength levels.
Men’s Good Morning vs Bodyweight Back Extension Standards
How to read the table: Each table entry lists the minimum result for both exercises. Weight-based targets show pounds and kilograms; direct-performance targets show strict repetitions or seconds for each age range. Scroll horizontally on smaller screens.
| Bodyweight | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|
| 120 lb 54.4 kg | Good Morning:70 lb31.8 kg Bodyweight Back Extension:Under 30: 12 reps30–39: 11 reps40–49: 10 reps50–59: 8 reps60+: 6 reps | Good Morning:91 lb41.3 kg Bodyweight Back Extension:Under 30: 30 reps30–39: 27 reps40–49: 24 reps50–59: 20 reps60+: 15 reps | Good Morning:126 lb57.2 kg Bodyweight Back Extension:Under 30: 55 reps30–39: 50 reps40–49: 44 reps50–59: 36 reps60+: 28 reps | Good Morning:160 lb72.6 kg Bodyweight Back Extension:Under 30: 85 reps30–39: 77 reps40–49: 68 reps50–59: 55 reps60+: 43 reps |
| 130 lb 59 kg | Good Morning:74 lb33.6 kg Bodyweight Back Extension:Under 30: 12 reps30–39: 11 reps40–49: 10 reps50–59: 8 reps60+: 6 reps | Good Morning:96 lb43.5 kg Bodyweight Back Extension:Under 30: 30 reps30–39: 27 reps40–49: 24 reps50–59: 20 reps60+: 15 reps | Good Morning:133 lb60.3 kg Bodyweight Back Extension:Under 30: 55 reps30–39: 50 reps40–49: 44 reps50–59: 36 reps60+: 28 reps | Good Morning:169 lb76.7 kg Bodyweight Back Extension:Under 30: 85 reps30–39: 77 reps40–49: 68 reps50–59: 55 reps60+: 43 reps |
| 140 lb 63.5 kg | Good Morning:78 lb35.4 kg Bodyweight Back Extension:Under 30: 12 reps30–39: 11 reps40–49: 10 reps50–59: 8 reps60+: 6 reps | Good Morning:101 lb45.8 kg Bodyweight Back Extension:Under 30: 30 reps30–39: 27 reps40–49: 24 reps50–59: 20 reps60+: 15 reps | Good Morning:140 lb63.5 kg Bodyweight Back Extension:Under 30: 55 reps30–39: 50 reps40–49: 44 reps50–59: 36 reps60+: 28 reps | Good Morning:178 lb80.7 kg Bodyweight Back Extension:Under 30: 85 reps30–39: 77 reps40–49: 68 reps50–59: 55 reps60+: 43 reps |
| 150 lb 68 kg | Good Morning:81 lb36.7 kg Bodyweight Back Extension:Under 30: 10 reps30–39: 9 reps40–49: 8 reps50–59: 7 reps60+: 5 reps | Good Morning:106 lb48.1 kg Bodyweight Back Extension:Under 30: 25 reps30–39: 23 reps40–49: 20 reps50–59: 16 reps60+: 13 reps | Good Morning:146 lb66.2 kg Bodyweight Back Extension:Under 30: 46 reps30–39: 41 reps40–49: 37 reps50–59: 30 reps60+: 23 reps | Good Morning:186 lb84.4 kg Bodyweight Back Extension:Under 30: 72 reps30–39: 65 reps40–49: 58 reps50–59: 47 reps60+: 36 reps |
| 160 lb 72.6 kg | Good Morning:85 lb38.6 kg Bodyweight Back Extension:Under 30: 10 reps30–39: 9 reps40–49: 8 reps50–59: 7 reps60+: 5 reps | Good Morning:111 lb50.3 kg Bodyweight Back Extension:Under 30: 25 reps30–39: 23 reps40–49: 20 reps50–59: 16 reps60+: 13 reps | Good Morning:152 lb68.9 kg Bodyweight Back Extension:Under 30: 46 reps30–39: 41 reps40–49: 37 reps50–59: 30 reps60+: 23 reps | Good Morning:194 lb88 kg Bodyweight Back Extension:Under 30: 72 reps30–39: 65 reps40–49: 58 reps50–59: 47 reps60+: 36 reps |
| 170 lb 77.1 kg | Good Morning:88 lb39.9 kg Bodyweight Back Extension:Under 30: 10 reps30–39: 9 reps40–49: 8 reps50–59: 7 reps60+: 5 reps | Good Morning:115 lb52.2 kg Bodyweight Back Extension:Under 30: 25 reps30–39: 23 reps40–49: 20 reps50–59: 16 reps60+: 13 reps | Good Morning:159 lb72.1 kg Bodyweight Back Extension:Under 30: 46 reps30–39: 41 reps40–49: 37 reps50–59: 30 reps60+: 23 reps | Good Morning:202 lb91.6 kg Bodyweight Back Extension:Under 30: 72 reps30–39: 65 reps40–49: 58 reps50–59: 47 reps60+: 36 reps |
| 180 lb 81.6 kg | Good Morning:92 lb41.7 kg Bodyweight Back Extension:Under 30: 10 reps30–39: 9 reps40–49: 8 reps50–59: 7 reps60+: 5 reps | Good Morning:120 lb54.4 kg Bodyweight Back Extension:Under 30: 25 reps30–39: 23 reps40–49: 20 reps50–59: 16 reps60+: 13 reps | Good Morning:165 lb74.8 kg Bodyweight Back Extension:Under 30: 46 reps30–39: 41 reps40–49: 37 reps50–59: 30 reps60+: 23 reps | Good Morning:210 lb95.3 kg Bodyweight Back Extension:Under 30: 72 reps30–39: 65 reps40–49: 58 reps50–59: 47 reps60+: 36 reps |
| 190 lb 86.2 kg | Good Morning:95 lb43.1 kg Bodyweight Back Extension:Under 30: 10 reps30–39: 9 reps40–49: 8 reps50–59: 7 reps60+: 5 reps | Good Morning:124 lb56.2 kg Bodyweight Back Extension:Under 30: 25 reps30–39: 23 reps40–49: 20 reps50–59: 16 reps60+: 13 reps | Good Morning:171 lb77.6 kg Bodyweight Back Extension:Under 30: 46 reps30–39: 41 reps40–49: 37 reps50–59: 30 reps60+: 23 reps | Good Morning:218 lb98.9 kg Bodyweight Back Extension:Under 30: 72 reps30–39: 65 reps40–49: 58 reps50–59: 47 reps60+: 36 reps |
| 200 lb 90.7 kg | Good Morning:98 lb44.5 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:128 lb58.1 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:177 lb80.3 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:226 lb102.5 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 210 lb 95.3 kg | Good Morning:102 lb46.3 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:133 lb60.3 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:183 lb83 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:233 lb105.7 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 220 lb 99.8 kg | Good Morning:105 lb47.6 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:137 lb62.1 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:189 lb85.7 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:240 lb108.9 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 230 lb 104.3 kg | Good Morning:108 lb49 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:141 lb64 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:194 lb88 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:248 lb112.5 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 240 lb 108.9 kg | Good Morning:111 lb50.3 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:145 lb65.8 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:200 lb90.7 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:255 lb115.7 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 250 lb 113.4 kg | Good Morning:114 lb51.7 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:149 lb67.6 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:205 lb93 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:262 lb118.8 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 260 lb 117.9 kg | Good Morning:117 lb53.1 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:153 lb69.4 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:211 lb95.7 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:269 lb122 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 270 lb 122.5 kg | Good Morning:120 lb54.4 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:157 lb71.2 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:216 lb98 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:276 lb125.2 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 280 lb 127 kg | Good Morning:123 lb55.8 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:161 lb73 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:221 lb100.2 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:282 lb127.9 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 290 lb 131.5 kg | Good Morning:126 lb57.2 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:164 lb74.4 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:227 lb103 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:289 lb131.1 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
| 300 lb 136.1 kg | Good Morning:129 lb58.5 kg Bodyweight Back Extension:Under 30: 8 reps30–39: 7 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:168 lb76.2 kg Bodyweight Back Extension:Under 30: 20 reps30–39: 18 reps40–49: 16 reps50–59: 13 reps60+: 10 reps | Good Morning:232 lb105.2 kg Bodyweight Back Extension:Under 30: 38 reps30–39: 34 reps40–49: 30 reps50–59: 25 reps60+: 19 reps | Good Morning:296 lb134.3 kg Bodyweight Back Extension:Under 30: 60 reps30–39: 54 reps40–49: 48 reps50–59: 39 reps60+: 30 reps |
Women’s Good Morning vs Bodyweight Back Extension Standards
How to read the table: Each table entry lists the minimum result for both exercises. Weight-based targets show pounds and kilograms; direct-performance targets show strict repetitions or seconds for each age range. Scroll horizontally on smaller screens.
| Bodyweight | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|
| 100 lb 45.4 kg | Good Morning:40 lb18.1 kg Bodyweight Back Extension:Under 30: 11 reps30–39: 10 reps40–49: 9 reps50–59: 7 reps60+: 6 reps | Good Morning:52 lb23.6 kg Bodyweight Back Extension:Under 30: 28 reps30–39: 25 reps40–49: 22 reps50–59: 18 reps60+: 14 reps | Good Morning:75 lb34 kg Bodyweight Back Extension:Under 30: 50 reps30–39: 45 reps40–49: 40 reps50–59: 33 reps60+: 25 reps | Good Morning:98 lb44.5 kg Bodyweight Back Extension:Under 30: 78 reps30–39: 70 reps40–49: 62 reps50–59: 51 reps60+: 39 reps |
| 110 lb 49.9 kg | Good Morning:43 lb19.5 kg Bodyweight Back Extension:Under 30: 11 reps30–39: 10 reps40–49: 9 reps50–59: 7 reps60+: 6 reps | Good Morning:55 lb24.9 kg Bodyweight Back Extension:Under 30: 28 reps30–39: 25 reps40–49: 22 reps50–59: 18 reps60+: 14 reps | Good Morning:80 lb36.3 kg Bodyweight Back Extension:Under 30: 50 reps30–39: 45 reps40–49: 40 reps50–59: 33 reps60+: 25 reps | Good Morning:104 lb47.2 kg Bodyweight Back Extension:Under 30: 78 reps30–39: 70 reps40–49: 62 reps50–59: 51 reps60+: 39 reps |
| 120 lb 54.4 kg | Good Morning:46 lb20.9 kg Bodyweight Back Extension:Under 30: 9 reps30–39: 8 reps40–49: 7 reps50–59: 6 reps60+: 5 reps | Good Morning:59 lb26.8 kg Bodyweight Back Extension:Under 30: 23 reps30–39: 21 reps40–49: 18 reps50–59: 15 reps60+: 12 reps | Good Morning:84 lb38.1 kg Bodyweight Back Extension:Under 30: 42 reps30–39: 38 reps40–49: 34 reps50–59: 27 reps60+: 21 reps | Good Morning:110 lb49.9 kg Bodyweight Back Extension:Under 30: 66 reps30–39: 59 reps40–49: 53 reps50–59: 43 reps60+: 33 reps |
| 130 lb 59 kg | Good Morning:48 lb21.8 kg Bodyweight Back Extension:Under 30: 9 reps30–39: 8 reps40–49: 7 reps50–59: 6 reps60+: 5 reps | Good Morning:62 lb28.1 kg Bodyweight Back Extension:Under 30: 23 reps30–39: 21 reps40–49: 18 reps50–59: 15 reps60+: 12 reps | Good Morning:89 lb40.4 kg Bodyweight Back Extension:Under 30: 42 reps30–39: 38 reps40–49: 34 reps50–59: 27 reps60+: 21 reps | Good Morning:116 lb52.6 kg Bodyweight Back Extension:Under 30: 66 reps30–39: 59 reps40–49: 53 reps50–59: 43 reps60+: 33 reps |
| 140 lb 63.5 kg | Good Morning:51 lb23.1 kg Bodyweight Back Extension:Under 30: 9 reps30–39: 8 reps40–49: 7 reps50–59: 6 reps60+: 5 reps | Good Morning:65 lb29.5 kg Bodyweight Back Extension:Under 30: 23 reps30–39: 21 reps40–49: 18 reps50–59: 15 reps60+: 12 reps | Good Morning:94 lb42.6 kg Bodyweight Back Extension:Under 30: 42 reps30–39: 38 reps40–49: 34 reps50–59: 27 reps60+: 21 reps | Good Morning:122 lb55.3 kg Bodyweight Back Extension:Under 30: 66 reps30–39: 59 reps40–49: 53 reps50–59: 43 reps60+: 33 reps |
| 150 lb 68 kg | Good Morning:53 lb24 kg Bodyweight Back Extension:Under 30: 9 reps30–39: 8 reps40–49: 7 reps50–59: 6 reps60+: 5 reps | Good Morning:68 lb30.8 kg Bodyweight Back Extension:Under 30: 23 reps30–39: 21 reps40–49: 18 reps50–59: 15 reps60+: 12 reps | Good Morning:98 lb44.5 kg Bodyweight Back Extension:Under 30: 42 reps30–39: 38 reps40–49: 34 reps50–59: 27 reps60+: 21 reps | Good Morning:128 lb58.1 kg Bodyweight Back Extension:Under 30: 66 reps30–39: 59 reps40–49: 53 reps50–59: 43 reps60+: 33 reps |
| 160 lb 72.6 kg | Good Morning:55 lb24.9 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:71 lb32.2 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:102 lb46.3 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:134 lb60.8 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 170 lb 77.1 kg | Good Morning:58 lb26.3 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:74 lb33.6 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:107 lb48.5 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:139 lb63 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 180 lb 81.6 kg | Good Morning:60 lb27.2 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:77 lb34.9 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:111 lb50.3 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:145 lb65.8 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 190 lb 86.2 kg | Good Morning:62 lb28.1 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:80 lb36.3 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:115 lb52.2 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:150 lb68 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 200 lb 90.7 kg | Good Morning:64 lb29 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:82 lb37.2 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:119 lb54 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:155 lb70.3 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 210 lb 95.3 kg | Good Morning:66 lb29.9 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:85 lb38.6 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:123 lb55.8 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:160 lb72.6 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 220 lb 99.8 kg | Good Morning:68 lb30.8 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:88 lb39.9 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:127 lb57.6 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:165 lb74.8 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 230 lb 104.3 kg | Good Morning:70 lb31.8 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:90 lb40.8 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:130 lb59 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:170 lb77.1 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
| 240 lb 108.9 kg | Good Morning:73 lb33.1 kg Bodyweight Back Extension:Under 30: 7 reps30–39: 6 reps40–49: 6 reps50–59: 5 reps60+: 4 reps | Good Morning:93 lb42.2 kg Bodyweight Back Extension:Under 30: 18 reps30–39: 16 reps40–49: 14 reps50–59: 12 reps60+: 9 reps | Good Morning:134 lb60.8 kg Bodyweight Back Extension:Under 30: 34 reps30–39: 31 reps40–49: 27 reps50–59: 22 reps60+: 17 reps | Good Morning:175 lb79.4 kg Bodyweight Back Extension:Under 30: 54 reps30–39: 49 reps40–49: 43 reps50–59: 35 reps60+: 27 reps |
How Your Barbell Good Morning vs Bodyweight Back Extension Result Is Calculated
The two exercises can use different measurements. The calculator rates each result against the standards for that exercise first, then compares the resulting strength levels and progress toward the next level. It never invents a reps-to-weight conversion.
1. Estimate the weight-based result
For Good Morning, one rep uses the weight entered. For 2–12 reps, the calculator runs both estimates and keeps the lower result.
- Epley: weight × (1 + reps ÷ 30)
- Brzycki: weight × 36 ÷ (37 − reps)
A published back-squat study supports estimated-max prediction under its study conditions. It does not independently validate every exercise or population used by this comparison.
2. Rate the Good Morning result
The good morning standards use the sex-specific standards from the individual Barbell Good Morning tool. The target adjusts to bodyweight using reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.
3. Rate the Bodyweight Back Extension result
The canonical repetition thresholds map the strict set to a strength tier; no reps-to-weight conversion is used. The calculator uses one continuous strict bodyweight back extension set scored by repetitions and does not convert the repetitions into an estimated weight.
4. Compare strength level and progress
The lower strength level is the priority. When both exercises reach the same level, a priority appears only when one is at least 10 points farther from its next target. Otherwise, the result is Balanced. Age range changes only the exercise whose standards include age; it remains an analytics field for the other exercise.
| Stage | What happens |
|---|---|
| Rate the good morning | Adjust good morning targets to exact bodyweight with the two-thirds rule. Measurement: estimated one-rep max. |
| Rate the bodyweight back extension | Rate strict bodyweight back extension repetitions without converting them into weight. Measurement: Strict bodyweight back extension reps. |
| Compare levels | Use each exercise’s own level and next target; do not compare or divide results that use different measurements. |
How Men’s Barbell Good Morning and Bodyweight Back Extension Standards Differ
What the men’s standards show:
Elite weight targets from 120 to 300 lb bodyweight.
Elite direct-performance targets from the youngest to oldest listed age range at 120 lb bodyweight.
Raw repetitions, seconds, and weights are not divided or converted. The calculator compares each exercise’s canonical tier and progress within that tier.
The exact table above is the correct way to inspect direct or unlike measurements. A pounds-difference chart would be invalid because repetitions, seconds, and estimated weight do not share a unit.
How Women’s Barbell Good Morning and Bodyweight Back Extension Standards Differ
What the women’s standards show:
Elite weight targets from 100 to 240 lb bodyweight.
Elite direct-performance targets from the youngest to oldest listed age range at 100 lb bodyweight.
Raw repetitions, seconds, and weights are not divided or converted. The calculator compares each exercise’s canonical tier and progress within that tier.
Use the calculator to apply the correct age range and exact bodyweight before comparing the two strength levels.
Barbell Good Morning and Bodyweight Back Extension Exercises Used by This Calculator
This calculator uses a barbell good morning and a strict bodyweight back extension. Use strict canonical Barbell Good Morning and Bodyweight Back Extension tests. Do not mix variations, assistance, partial range, momentum, or different load conventions.
Use a raw barbell good morning
Keep the bar on the upper back, hinge backward with minimal knee bend and a braced neutral torso, stop at a repeatable hamstring-limited depth, and return to full standing. Do not enter a safety-bar or Smith-machine good morning, squat-morning, partial hinge, bounced rep, or assisted lift.
Use a strict, repeatable Bodyweight Back Extension
Follow the individual Bodyweight Back Extension calculator’s canonical setup, load convention, range of motion, and finish rules. Keep the same setup when retesting.
Enter one recent Barbell Good Morning result and one recent Bodyweight Back Extension result
Use each exercise’s canonical input: Total barbell weight for Barbell Good Morning and No external load for Bodyweight Back Extension.
Related Tools
- Barbell Good Morning — View the individual Good Morning standards and next strength-level target.
- Bodyweight Back Extension Strength Standards — View the individual Bodyweight Back Extension standards and next strength-level target.
- Machine Back Extension — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.
- Lying Leg Curl — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.
- Cable Pull Through — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.
- Romanian Deadlift — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.