Kettlebell Clean vs Machine Back Extension
Compare your kettlebell clean and machine back extension against strength standards for your sex and bodyweight. Enter one recent set of 1–12 reps for each lift to see estimated one-rep maxes, strength levels, next targets, and priority.
First lift: weight used and 1–12 strict reps. Second lift: displayed machine or cable resistance and 1–12 strict reps. Pounds or kilograms. For the first exercise, clean one kettlebell from the floor or a consistent hang to a secure front rack without a press, curl, crash, two-hand assist, or high-pull-only finish. For the second exercise, perform a strict machine back extension result with a consistent setup, full range of motion, and controlled finish. Each lift is compared with its own standards, so the heavier lift is not automatically the stronger one.
Kettlebell Clean vs Machine Back Extension Strength Standards
These bodyweight tables place the kettlebell clean and machine back extension targets side by side from Novice through Elite. Use them to compare standards, not to force a particular ratio between the lifts.
Find the closest row in the men’s or women’s table. Every target lists Kettlebell Clean / Machine Back Extension, pounds first and kilograms second. Enter your own sets above for exact ratings without testing a true one-rep max.
Men’s Kettlebell Clean vs Machine Back Extension Standards
How to read the table: Find the closest bodyweight, then use the labeled exercise row. Every strength-level entry shows one target with pounds first and kilograms beneath it.
| Bodyweight | Exercise | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|---|
| 120 lb54.4 kg | Kettlebell Clean | 50 lb22.7 kg | 76 lb34.5 kg | 106 lb48.1 kg | 137 lb62.1 kg |
| Machine Back Extension | 42 lb19.1 kg | 67 lb30.4 kg | 101 lb45.8 kg | 134 lb60.8 kg | |
| 130 lb59 kg | Kettlebell Clean | 53 lb24 kg | 80 lb36.3 kg | 112 lb50.8 kg | 144 lb65.3 kg |
| Machine Back Extension | 44 lb20 kg | 71 lb32.2 kg | 106 lb48.1 kg | 141 lb64 kg | |
| 140 lb63.5 kg | Kettlebell Clean | 55 lb24.9 kg | 84 lb38.1 kg | 117 lb53.1 kg | 152 lb68.9 kg |
| Machine Back Extension | 47 lb21.3 kg | 74 lb33.6 kg | 112 lb50.8 kg | 148 lb67.1 kg | |
| 150 lb68 kg | Kettlebell Clean | 58 lb26.3 kg | 88 lb39.9 kg | 123 lb55.8 kg | 159 lb72.1 kg |
| Machine Back Extension | 49 lb22.2 kg | 78 lb35.4 kg | 117 lb53.1 kg | 155 lb70.3 kg | |
| 160 lb72.6 kg | Kettlebell Clean | 61 lb27.7 kg | 92 lb41.7 kg | 128 lb58.1 kg | 166 lb75.3 kg |
| Machine Back Extension | 51 lb23.1 kg | 81 lb36.7 kg | 122 lb55.3 kg | 162 lb73.5 kg | |
| 170 lb77.1 kg | Kettlebell Clean | 63 lb28.6 kg | 96 lb43.5 kg | 134 lb60.8 kg | 173 lb78.5 kg |
| Machine Back Extension | 53 lb24 kg | 84 lb38.1 kg | 127 lb57.6 kg | 169 lb76.7 kg | |
| 180 lb81.6 kg | Kettlebell Clean | 66 lb29.9 kg | 99 lb44.9 kg | 139 lb63 kg | 179 lb81.2 kg |
| Machine Back Extension | 55 lb24.9 kg | 88 lb39.9 kg | 132 lb59.9 kg | 176 lb79.8 kg | |
| 190 lb86.2 kg | Kettlebell Clean | 68 lb30.8 kg | 103 lb46.7 kg | 144 lb65.3 kg | 186 lb84.4 kg |
| Machine Back Extension | 57 lb25.9 kg | 91 lb41.3 kg | 137 lb62.1 kg | 182 lb82.6 kg | |
| 200 lb90.7 kg | Kettlebell Clean | 70 lb31.8 kg | 107 lb48.5 kg | 149 lb67.6 kg | 192 lb87.1 kg |
| Machine Back Extension | 59 lb26.8 kg | 94 lb42.6 kg | 142 lb64.4 kg | 188 lb85.3 kg | |
| 210 lb95.3 kg | Kettlebell Clean | 73 lb33.1 kg | 110 lb49.9 kg | 154 lb69.9 kg | 199 lb90.3 kg |
| Machine Back Extension | 61 lb27.7 kg | 97 lb44 kg | 146 lb66.2 kg | 195 lb88.5 kg | |
| 220 lb99.8 kg | Kettlebell Clean | 75 lb34 kg | 114 lb51.7 kg | 159 lb72.1 kg | 205 lb93 kg |
| Machine Back Extension | 63 lb28.6 kg | 100 lb45.4 kg | 151 lb68.5 kg | 201 lb91.2 kg | |
| 230 lb104.3 kg | Kettlebell Clean | 77 lb34.9 kg | 117 lb53.1 kg | 164 lb74.4 kg | 211 lb95.7 kg |
| Machine Back Extension | 65 lb29.5 kg | 103 lb46.7 kg | 156 lb70.8 kg | 207 lb93.9 kg | |
| 240 lb108.9 kg | Kettlebell Clean | 79 lb35.8 kg | 120 lb54.4 kg | 168 lb76.2 kg | 217 lb98.4 kg |
| Machine Back Extension | 67 lb30.4 kg | 106 lb48.1 kg | 160 lb72.6 kg | 213 lb96.6 kg | |
| 250 lb113.4 kg | Kettlebell Clean | 82 lb37.2 kg | 124 lb56.2 kg | 173 lb78.5 kg | 223 lb101.2 kg |
| Machine Back Extension | 68 lb30.8 kg | 109 lb49.4 kg | 165 lb74.8 kg | 219 lb99.3 kg | |
| 260 lb117.9 kg | Kettlebell Clean | 84 lb38.1 kg | 127 lb57.6 kg | 177 lb80.3 kg | 229 lb103.9 kg |
| Machine Back Extension | 70 lb31.8 kg | 112 lb50.8 kg | 169 lb76.7 kg | 224 lb101.6 kg | |
| 270 lb122.5 kg | Kettlebell Clean | 86 lb39 kg | 130 lb59 kg | 182 lb82.6 kg | 235 lb106.6 kg |
| Machine Back Extension | 72 lb32.7 kg | 115 lb52.2 kg | 173 lb78.5 kg | 230 lb104.3 kg | |
| 280 lb127 kg | Kettlebell Clean | 88 lb39.9 kg | 133 lb60.3 kg | 186 lb84.4 kg | 241 lb109.3 kg |
| Machine Back Extension | 74 lb33.6 kg | 118 lb53.5 kg | 177 lb80.3 kg | 236 lb107 kg | |
| 290 lb131.5 kg | Kettlebell Clean | 90 lb40.8 kg | 137 lb62.1 kg | 191 lb86.6 kg | 247 lb112 kg |
| Machine Back Extension | 76 lb34.5 kg | 121 lb54.9 kg | 182 lb82.6 kg | 241 lb109.3 kg | |
| 300 lb136.1 kg | Kettlebell Clean | 92 lb41.7 kg | 140 lb63.5 kg | 195 lb88.5 kg | 252 lb114.3 kg |
| Machine Back Extension | 77 lb34.9 kg | 123 lb55.8 kg | 186 lb84.4 kg | 247 lb112 kg |
Women’s Kettlebell Clean vs Machine Back Extension Standards
How to read the table: Find the closest bodyweight, then use the labeled exercise row. Every strength-level entry shows one target with pounds first and kilograms beneath it.
| Bodyweight | Exercise | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|---|
| 100 lb45.4 kg | Kettlebell Clean | 27 lb12.2 kg | 43 lb19.5 kg | 64 lb29 kg | 85 lb38.6 kg |
| Machine Back Extension | 25 lb11.3 kg | 41 lb18.6 kg | 63 lb28.6 kg | 86 lb39 kg | |
| 110 lb49.9 kg | Kettlebell Clean | 29 lb13.2 kg | 46 lb20.9 kg | 68 lb30.8 kg | 90 lb40.8 kg |
| Machine Back Extension | 27 lb12.2 kg | 44 lb20 kg | 67 lb30.4 kg | 92 lb41.7 kg | |
| 120 lb54.4 kg | Kettlebell Clean | 31 lb14.1 kg | 49 lb22.2 kg | 72 lb32.7 kg | 96 lb43.5 kg |
| Machine Back Extension | 28 lb12.7 kg | 47 lb21.3 kg | 72 lb32.7 kg | 97 lb44 kg | |
| 130 lb59 kg | Kettlebell Clean | 33 lb15 kg | 52 lb23.6 kg | 76 lb34.5 kg | 101 lb45.8 kg |
| Machine Back Extension | 30 lb13.6 kg | 49 lb22.2 kg | 75 lb34 kg | 103 lb46.7 kg | |
| 140 lb63.5 kg | Kettlebell Clean | 34 lb15.4 kg | 54 lb24.5 kg | 80 lb36.3 kg | 106 lb48.1 kg |
| Machine Back Extension | 32 lb14.5 kg | 52 lb23.6 kg | 79 lb35.8 kg | 108 lb49 kg | |
| 150 lb68 kg | Kettlebell Clean | 36 lb16.3 kg | 57 lb25.9 kg | 84 lb38.1 kg | 111 lb50.3 kg |
| Machine Back Extension | 33 lb15 kg | 54 lb24.5 kg | 83 lb37.6 kg | 113 lb51.3 kg | |
| 160 lb72.6 kg | Kettlebell Clean | 38 lb17.2 kg | 60 lb27.2 kg | 88 lb39.9 kg | 116 lb52.6 kg |
| Machine Back Extension | 34 lb15.4 kg | 56 lb25.4 kg | 87 lb39.5 kg | 118 lb53.5 kg | |
| 170 lb77.1 kg | Kettlebell Clean | 39 lb17.7 kg | 62 lb28.1 kg | 91 lb41.3 kg | 121 lb54.9 kg |
| Machine Back Extension | 36 lb16.3 kg | 59 lb26.8 kg | 90 lb40.8 kg | 123 lb55.8 kg | |
| 180 lb81.6 kg | Kettlebell Clean | 41 lb18.6 kg | 64 lb29 kg | 95 lb43.1 kg | 125 lb56.7 kg |
| Machine Back Extension | 37 lb16.8 kg | 61 lb27.7 kg | 94 lb42.6 kg | 128 lb58.1 kg | |
| 190 lb86.2 kg | Kettlebell Clean | 42 lb19.1 kg | 67 lb30.4 kg | 98 lb44.5 kg | 130 lb59 kg |
| Machine Back Extension | 39 lb17.7 kg | 63 lb28.6 kg | 97 lb44 kg | 132 lb59.9 kg | |
| 200 lb90.7 kg | Kettlebell Clean | 44 lb20 kg | 69 lb31.3 kg | 102 lb46.3 kg | 134 lb60.8 kg |
| Machine Back Extension | 40 lb18.1 kg | 65 lb29.5 kg | 101 lb45.8 kg | 137 lb62.1 kg | |
| 210 lb95.3 kg | Kettlebell Clean | 45 lb20.4 kg | 71 lb32.2 kg | 105 lb47.6 kg | 139 lb63 kg |
| Machine Back Extension | 41 lb18.6 kg | 68 lb30.8 kg | 104 lb47.2 kg | 141 lb64 kg | |
| 220 lb99.8 kg | Kettlebell Clean | 46 lb20.9 kg | 74 lb33.6 kg | 108 lb49 kg | 143 lb64.9 kg |
| Machine Back Extension | 43 lb19.5 kg | 70 lb31.8 kg | 107 lb48.5 kg | 146 lb66.2 kg | |
| 230 lb104.3 kg | Kettlebell Clean | 48 lb21.8 kg | 76 lb34.5 kg | 112 lb50.8 kg | 148 lb67.1 kg |
| Machine Back Extension | 44 lb20 kg | 72 lb32.7 kg | 110 lb49.9 kg | 150 lb68 kg | |
| 240 lb108.9 kg | Kettlebell Clean | 49 lb22.2 kg | 78 lb35.4 kg | 115 lb52.2 kg | 152 lb68.9 kg |
| Machine Back Extension | 45 lb20.4 kg | 74 lb33.6 kg | 114 lb51.7 kg | 155 lb70.3 kg |
How Your Kettlebell Clean vs Machine Back Extension Result Is Calculated
Both lifts are scored independently first: estimated max, bodyweight-adjusted strength level, and progress toward the next level. Those ratings drive the comparison.
1. Estimate a one-rep max from each set
A one-rep set uses the entered weight. For 2–12 reps, both formulas are calculated and the lower estimate is retained.
- Epley: weight × (1 + reps ÷ 30)
- Brzycki: weight × 36 ÷ (37 − reps)
Set quality matters for this Kettlebell Clean vs Machine Back Extension comparison. Enter technically consistent, challenging sets, and prefer lower-rep results when practical because the estimate extends less far beyond the performed set.
2. Find the kettlebell clean strength level
For kettlebell clean, the individual exercise thresholds start from reference bodyweights of 190 lb for men and 150 lb for women. Exact-bodyweight targets use reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.
This adjustment expects larger lifters to move more weight, but it does not increase the target pound for pound with bodyweight.
3. Find the machine back extension strength level
The standards use the sex-specific thresholds from the individual Machine Back Extension tool. Targets begin at 190 lb for men and 150 lb for women, then adjust to exact bodyweight with reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.
Two-thirds scaling raises the target as bodyweight rises while limiting the size advantage that a direct one-to-one adjustment would create.
4. Compare the two results
Strength level decides the comparison first. Matching levels remain Balanced unless progress toward the next target differs by at least 10 points.
A priority result is a standards comparison, not a diagnosis. Differences in technique, fatigue, practice, or set effort may influence it. Age range is recorded anonymously and does not alter these standards.
| Stage | What happens |
|---|---|
| Estimate each max | Use the entered weight for 1 rep; for 2–12 reps, keep the lower formula result. |
| Rate the kettlebell clean | Use the exercise-specific estimated max and adjust targets to exact bodyweight with the two-thirds scaling rule. |
| Rate the machine back extension | Use the exercise-specific estimated max and adjust targets to exact bodyweight with the two-thirds scaling rule. |
| Compare different levels | Name the lower-level lift as the priority. |
| Compare matching levels | Use Balanced unless the difference in progress toward the next level reaches 10 points. |
The calculator above applies these steps to your exact entries and reports both lift ratings, both next targets, and the final comparison.
How Men’s Kettlebell Clean and Machine Back Extension Standards Differ
What the men’s data shows:
The standards come closest at 120 lb.
Novice, Intermediate, Advanced, and Elite at every displayed bodyweight.
Across 120–300 lb bodyweight, the Elite gap changes from 1.3 to 2.3 kg.
How to read this chart: Choose a strength level and follow its line across bodyweight. Values show the Machine Back Extension standard minus the Kettlebell Clean standard: zero means equal, above zero means the Machine Back Extension standard is higher, and below zero means the Kettlebell Clean standard is higher. Swipe horizontally on mobile. Use the standards table for exact lb/kg targets.
Line chart loading. The standards tables above contain the exact pounds and kilograms.
How Women’s Kettlebell Clean and Machine Back Extension Standards Differ
What the women’s data shows:
The kettlebell clean and machine back extension standards are within 3 lb at 100 lb, 110 lb, 120 lb, 130 lb, 140 lb, 150 lb, 170 lb, 190 lb, and 220 lb.
Elite at every displayed bodyweight.
Across 100–240 lb bodyweight, the Elite gap changes from 0.4 to 1.4 kg.
How to read this chart: Choose a strength level and follow its line across bodyweight. Values show the Machine Back Extension standard minus the Kettlebell Clean standard: zero means equal, above zero means the Machine Back Extension standard is higher, and below zero means the Kettlebell Clean standard is higher. Swipe horizontally on mobile. Use the standards table for exact lb/kg targets.
Line chart loading. The standards tables above contain the exact pounds and kilograms.
Kettlebell Clean and Machine Back Extension Exercises Used by This Calculator
Valid results depend on using the specified kettlebell clean and machine back extension technique and load convention. Use strict, repeatable Kettlebell Clean and Machine Back Extension tests that follow each exercise’s setup, range of motion, equipment, and load rules. Do not mix variations, assistance, partial range, momentum, or different load conventions.
Use the Kettlebell Clean setup and load convention
One kettlebell cleaned by one arm at a time. Total valid reps across both arms combined. Clean one kettlebell from the floor or a consistent hang to a secure front rack without a press, curl, crash, two-hand assist, or high-pull-only finish. Consistent setup, range, and finish quality across the entered set. No substituted exercise or assisted reps.
Use the Machine Back Extension setup and load convention
Use the tested Machine Back Extension machine only. Enter external resistance for the set. Use matching units for bodyweight and resistance. Keep setup and range consistent. Count only strict controlled reps. Do not enter a different exercise result.
Enter one recent Kettlebell Clean result and one recent Machine Back Extension result
First lift: weight used and 1–12 strict reps. Second lift: displayed machine or cable resistance and 1–12 strict reps. Pounds or kilograms.
Related Tools
- Kettlebell Clean — View the individual Kettlebell Clean standards and next strength-level target.
- Machine Back Extension — View the individual Machine Back Extension standards and next strength-level target.
- Hang Clean (Dumbbell) — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.
- Dumbbell High Pull — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.
- Dumbbell Snatch — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.
- Kettlebell Swing — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.