Barbell JM Press vs Barbell Floor Skull Crusher Strength Standards
Compare your barbell JM press and barbell floor skull crusher against strength standards for your sex and bodyweight. Enter one recent set of 1–12 reps for each lift to see your estimated one-rep maxes, strength levels, next targets, and which lift you should prioritize.
Use each exercise's canonical input: Total barbell weight for Barbell JM Press and Weight used for Barbell Floor Skull Crusher. Use a strict triceps-dominant barbell JM press performed on a flat bench with a consistent high-torso bottom target and the entered weight for strict Barbell Floor Skull Crusher. You can enter either lift in pounds or kilograms. Each lift is compared with its own standards, so the heavier lift is not automatically the stronger one.
Barbell JM Press vs Barbell Floor Skull Crusher Strength Standards by Bodyweight
Use these tables to compare the estimated one-rep max required for the barbell JM press and barbell floor skull crusher to reach the same strength level at each listed bodyweight. They show the targets used by the calculator—not a required difference between your barbell JM press and barbell floor skull crusher.
Choose the men’s or women’s table, find your bodyweight or the closest listed row, then read across to Novice, Intermediate, Advanced, or Elite. Every entry shows Barbell JM Press / Barbell Floor Skull Crusher, with pounds first and kilograms underneath. For a result based on your exact bodyweight and recent sets, use the calculator above; you do not need to test either true one-rep max.
Men’s Barbell JM Press vs Barbell Floor Skull Crusher Standards
How to read the table: The first number is Barbell JM Press; the second is Barbell Floor Skull Crusher. Each number is the lowest estimated one-rep max needed to reach that strength level. Scroll horizontally on smaller screens.
| Bodyweight | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|
| 120 lb 54.4 kg | 45 / 34 lb 20.4 / 15.4 kg | 67 / 50 lb 30.4 / 22.7 kg | 95 / 71 lb 43.1 / 32.2 kg | 126 / 95 lb 57.2 / 43.1 kg |
| 130 lb 59 kg | 47 / 36 lb 21.3 / 16.3 kg | 71 / 53 lb 32.2 / 24 kg | 100 / 75 lb 45.4 / 34 kg | 133 / 100 lb 60.3 / 45.4 kg |
| 140 lb 63.5 kg | 50 / 38 lb 22.7 / 17.2 kg | 74 / 55 lb 33.6 / 24.9 kg | 105 / 79 lb 47.6 / 35.8 kg | 140 / 105 lb 63.5 / 47.6 kg |
| 150 lb 68 kg | 52 / 39 lb 23.6 / 17.7 kg | 78 / 58 lb 35.4 / 26.3 kg | 110 / 83 lb 49.9 / 37.6 kg | 146 / 110 lb 66.2 / 49.9 kg |
| 160 lb 72.6 kg | 54 / 41 lb 24.5 / 18.6 kg | 81 / 61 lb 36.7 / 27.7 kg | 115 / 86 lb 52.2 / 39 kg | 152 / 115 lb 68.9 / 52.2 kg |
| 170 lb 77.1 kg | 57 / 43 lb 25.9 / 19.5 kg | 84 / 63 lb 38.1 / 28.6 kg | 120 / 90 lb 54.4 / 40.8 kg | 159 / 120 lb 72.1 / 54.4 kg |
| 180 lb 81.6 kg | 59 / 44 lb 26.8 / 20 kg | 88 / 66 lb 39.9 / 29.9 kg | 124 / 94 lb 56.2 / 42.6 kg | 165 / 124 lb 74.8 / 56.2 kg |
| 190 lb 86.2 kg | 61 / 46 lb 27.7 / 20.9 kg | 91 / 68 lb 41.3 / 30.8 kg | 129 / 97 lb 58.5 / 44 kg | 171 / 129 lb 77.6 / 58.5 kg |
| 200 lb 90.7 kg | 63 / 48 lb 28.6 / 21.8 kg | 94 / 70 lb 42.6 / 31.8 kg | 133 / 100 lb 60.3 / 45.4 kg | 177 / 133 lb 80.3 / 60.3 kg |
| 210 lb 95.3 kg | 65 / 49 lb 29.5 / 22.2 kg | 97 / 73 lb 44 / 33.1 kg | 138 / 104 lb 62.6 / 47.2 kg | 183 / 138 lb 83 / 62.6 kg |
| 220 lb 99.8 kg | 67 / 51 lb 30.4 / 23.1 kg | 100 / 75 lb 45.4 / 34 kg | 142 / 107 lb 64.4 / 48.5 kg | 189 / 142 lb 85.7 / 64.4 kg |
| 230 lb 104.3 kg | 69 / 52 lb 31.3 / 23.6 kg | 103 / 77 lb 46.7 / 34.9 kg | 147 / 110 lb 66.7 / 49.9 kg | 194 / 147 lb 88 / 66.7 kg |
| 240 lb 108.9 kg | 71 / 54 lb 32.2 / 24.5 kg | 106 / 79 lb 48.1 / 35.8 kg | 151 / 113 lb 68.5 / 51.3 kg | 200 / 151 lb 90.7 / 68.5 kg |
| 250 lb 113.4 kg | 73 / 55 lb 33.1 / 24.9 kg | 109 / 82 lb 49.4 / 37.2 kg | 155 / 116 lb 70.3 / 52.6 kg | 205 / 155 lb 93 / 70.3 kg |
| 260 lb 117.9 kg | 75 / 57 lb 34 / 25.9 kg | 112 / 84 lb 50.8 / 38.1 kg | 159 / 120 lb 72.1 / 54.4 kg | 211 / 159 lb 95.7 / 72.1 kg |
| 270 lb 122.5 kg | 77 / 58 lb 34.9 / 26.3 kg | 115 / 86 lb 52.2 / 39 kg | 163 / 123 lb 73.9 / 55.8 kg | 216 / 163 lb 98 / 73.9 kg |
| 280 lb 127 kg | 79 / 60 lb 35.8 / 27.2 kg | 118 / 88 lb 53.5 / 39.9 kg | 167 / 126 lb 75.7 / 57.2 kg | 221 / 167 lb 100.2 / 75.7 kg |
| 290 lb 131.5 kg | 81 / 61 lb 36.7 / 27.7 kg | 121 / 90 lb 54.9 / 40.8 kg | 171 / 129 lb 77.6 / 58.5 kg | 227 / 171 lb 103 / 77.6 kg |
| 300 lb 136.1 kg | 83 / 62 lb 37.6 / 28.1 kg | 123 / 92 lb 55.8 / 41.7 kg | 175 / 132 lb 79.4 / 59.9 kg | 232 / 175 lb 105.2 / 79.4 kg |
Women’s Barbell JM Press vs Barbell Floor Skull Crusher Standards
How to read the table: The first number is Barbell JM Press; the second is Barbell Floor Skull Crusher. Each number is the lowest estimated one-rep max needed to reach that strength level. Scroll horizontally on smaller screens.
| Bodyweight | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|
| 100 lb 45.4 kg | 21 / 16 lb 9.5 / 7.3 kg | 34 / 27 lb 15.4 / 12.2 kg | 53 / 39 lb 24 / 17.7 kg | 71 / 54 lb 32.2 / 24.5 kg |
| 110 lb 49.9 kg | 22 / 17 lb 10 / 7.7 kg | 37 / 28 lb 16.8 / 12.7 kg | 56 / 41 lb 25.4 / 18.6 kg | 76 / 58 lb 34.5 / 26.3 kg |
| 120 lb 54.4 kg | 23 / 18 lb 10.4 / 8.2 kg | 39 / 30 lb 17.7 / 13.6 kg | 59 / 44 lb 26.8 / 20 kg | 80 / 61 lb 36.3 / 27.7 kg |
| 130 lb 59 kg | 25 / 19 lb 11.3 / 8.6 kg | 41 / 32 lb 18.6 / 14.5 kg | 63 / 46 lb 28.6 / 20.9 kg | 85 / 65 lb 38.6 / 29.5 kg |
| 140 lb 63.5 kg | 26 / 20 lb 11.8 / 9.1 kg | 43 / 33 lb 19.5 / 15 kg | 66 / 49 lb 29.9 / 22.2 kg | 89 / 68 lb 40.4 / 30.8 kg |
| 150 lb 68 kg | 27 / 21 lb 12.2 / 9.5 kg | 45 / 35 lb 20.4 / 15.9 kg | 69 / 51 lb 31.3 / 23.1 kg | 93 / 71 lb 42.2 / 32.2 kg |
| 160 lb 72.6 kg | 28 / 22 lb 12.7 / 10 kg | 47 / 37 lb 21.3 / 16.8 kg | 72 / 53 lb 32.7 / 24 kg | 97 / 74 lb 44 / 33.6 kg |
| 170 lb 77.1 kg | 29 / 23 lb 13.2 / 10.4 kg | 49 / 38 lb 22.2 / 17.2 kg | 75 / 55 lb 34 / 24.9 kg | 101 / 77 lb 45.8 / 34.9 kg |
| 180 lb 81.6 kg | 30 / 24 lb 13.6 / 10.9 kg | 51 / 40 lb 23.1 / 18.1 kg | 78 / 58 lb 35.4 / 26.3 kg | 105 / 80 lb 47.6 / 36.3 kg |
| 190 lb 86.2 kg | 32 / 25 lb 14.5 / 11.3 kg | 53 / 41 lb 24 / 18.6 kg | 81 / 60 lb 36.7 / 27.2 kg | 109 / 83 lb 49.4 / 37.6 kg |
| 200 lb 90.7 kg | 33 / 25 lb 15 / 11.3 kg | 55 / 42 lb 24.9 / 19.1 kg | 84 / 62 lb 38.1 / 28.1 kg | 113 / 86 lb 51.3 / 39 kg |
| 210 lb 95.3 kg | 34 / 26 lb 15.4 / 11.8 kg | 56 / 44 lb 25.4 / 20 kg | 86 / 64 lb 39 / 29 kg | 116 / 89 lb 52.6 / 40.4 kg |
| 220 lb 99.8 kg | 35 / 27 lb 15.9 / 12.2 kg | 58 / 45 lb 26.3 / 20.4 kg | 89 / 66 lb 40.4 / 29.9 kg | 120 / 92 lb 54.4 / 41.7 kg |
| 230 lb 104.3 kg | 36 / 28 lb 16.3 / 12.7 kg | 60 / 47 lb 27.2 / 21.3 kg | 92 / 68 lb 41.7 / 30.8 kg | 124 / 94 lb 56.2 / 42.6 kg |
| 240 lb 108.9 kg | 37 / 29 lb 16.8 / 13.2 kg | 62 / 48 lb 28.1 / 21.8 kg | 94 / 70 lb 42.6 / 31.8 kg | 127 / 97 lb 57.6 / 44 kg |
How Your Barbell JM Press vs Barbell Floor Skull Crusher Result Is Calculated
The calculator estimates each max, rates it against the standards for that exercise and bodyweight, then compares the two ratings. Here is the complete process.
1. Estimate a one-rep max from each set
For one rep, it uses the weight entered. For 2–12 reps, it runs both formulas and keeps the lower, less aggressive estimate.
- 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. Estimates are more dependable from clean, difficult, lower-rep sets. See the Back-squat formula validation study and Published discussion of back-squat one-rep-max prediction research.
2. Find the barbell JM press strength level
The standards use the sex-specific strength levels from the individual Barbell JM Press tool. Targets begin at 190 lb for men and 150 lb for women, then adjust to your exact bodyweight: reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.
The target rises more slowly than bodyweight so heavier lifters are expected to press more total barbell weight without requiring strength to increase pound for pound.
3. Find the barbell floor skull crusher strength level
The standards use the sex-specific thresholds from the individual Barbell Floor Skull Crusher tool. Targets begin at 190 lb for men and 150 lb for women, then adjust to your exact bodyweight: reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.
The target rises more slowly than bodyweight so larger lifters are expected to lift more without requiring strength to increase pound for pound.
4. Compare the two results
Each max receives a level from Beginner through Elite. The lower-level lift is the priority. If the levels match, a priority appears only when one lift is at least 10 points farther from its next level. Otherwise, the result is Balanced.
The result shows which lift ranks lower, not why. Technique, fatigue, training history, and set quality can affect it. Age range is recorded anonymously but does not change the 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 barbell JM press | Adjust barbell JM press targets to exact bodyweight with the two-thirds rule. |
| Rate the barbell floor skull crusher | Use the canonical estimated max and adjust targets to exact bodyweight with the approved two-thirds 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. |
Use the calculator above to see both estimated maxes, strength levels, the priority or Balanced result, and both next-level targets.
How Men’s Barbell JM Press and Barbell Floor Skull Crusher Standards Differ
How to read both charts: Choose a strength level, find bodyweight along the bottom, and follow that level’s line. Zero means the two standards are equal. Above zero means the barbell floor skull crusher standard is higher; below zero means the barbell JM press standard is higher. On a phone, swipe the chart left and right to inspect the full-size lines and labels. The tables provide the exact pounds and kilograms.
What the men’s data shows:
The standards come closest at 120 lb.
Novice, Intermediate, Advanced, and Elite at every displayed bodyweight.
14.1 → 25.8 kg from 120 to 300 lb bodyweight.
How to read the table: Every number is the barbell floor skull crusher standard minus the barbell JM press standard. A plus sign means the barbell floor skull crusher standard is higher. A minus sign means the barbell JM press standard is higher.
| Bodyweight | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|
| 120 lb 54.4 kg | −11 lb −5 kg | −17 lb −7.7 kg | −24 lb −10.9 kg | −31 lb −14.1 kg |
| 130 lb 59 kg | −11 lb −5 kg | −18 lb −8.2 kg | −25 lb −11.4 kg | −33 lb −14.9 kg |
| 140 lb 63.5 kg | −12 lb −5.5 kg | −19 lb −8.7 kg | −26 lb −11.8 kg | −35 lb −15.9 kg |
| 150 lb 68 kg | −13 lb −5.9 kg | −20 lb −9.1 kg | −27 lb −12.3 kg | −36 lb −16.3 kg |
| 160 lb 72.6 kg | −13 lb −5.9 kg | −20 lb −9 kg | −29 lb −13.2 kg | −37 lb −16.7 kg |
| 170 lb 77.1 kg | −14 lb −6.4 kg | −21 lb −9.5 kg | −30 lb −13.6 kg | −39 lb −17.7 kg |
| 180 lb 81.6 kg | −15 lb −6.8 kg | −22 lb −10 kg | −30 lb −13.6 kg | −41 lb −18.6 kg |
| 190 lb 86.2 kg | −15 lb −6.8 kg | −23 lb −10.5 kg | −32 lb −14.5 kg | −42 lb −19.1 kg |
| 200 lb 90.7 kg | −15 lb −6.8 kg | −24 lb −10.8 kg | −33 lb −14.9 kg | −44 lb −20 kg |
| 210 lb 95.3 kg | −16 lb −7.3 kg | −24 lb −10.9 kg | −34 lb −15.4 kg | −45 lb −20.4 kg |
| 220 lb 99.8 kg | −16 lb −7.3 kg | −25 lb −11.4 kg | −35 lb −15.9 kg | −47 lb −21.3 kg |
| 230 lb 104.3 kg | −17 lb −7.7 kg | −26 lb −11.8 kg | −37 lb −16.8 kg | −47 lb −21.3 kg |
| 240 lb 108.9 kg | −17 lb −7.7 kg | −27 lb −12.3 kg | −38 lb −17.2 kg | −49 lb −22.2 kg |
| 250 lb 113.4 kg | −18 lb −8.2 kg | −27 lb −12.2 kg | −39 lb −17.7 kg | −50 lb −22.7 kg |
| 260 lb 117.9 kg | −18 lb −8.1 kg | −28 lb −12.7 kg | −39 lb −17.7 kg | −52 lb −23.6 kg |
| 270 lb 122.5 kg | −19 lb −8.6 kg | −29 lb −13.2 kg | −40 lb −18.1 kg | −53 lb −24.1 kg |
| 280 lb 127 kg | −19 lb −8.6 kg | −30 lb −13.6 kg | −41 lb −18.5 kg | −54 lb −24.5 kg |
| 290 lb 131.5 kg | −20 lb −9 kg | −31 lb −14.1 kg | −42 lb −19.1 kg | −56 lb −25.4 kg |
| 300 lb 136.1 kg | −21 lb −9.5 kg | −31 lb −14.1 kg | −43 lb −19.5 kg | −57 lb −25.8 kg |
How Women’s Barbell JM Press and Barbell Floor Skull Crusher Standards Differ
What the women’s data shows:
The standards come closest at 100 lb.
Novice, Intermediate, Advanced, and Elite at every displayed bodyweight.
7.7 → 13.6 kg from 100 to 240 lb bodyweight.
How to read the table: Every number is the barbell floor skull crusher standard minus the barbell JM press standard. A plus sign means the barbell floor skull crusher standard is higher. A minus sign means the barbell JM press standard is higher.
| Bodyweight | Novice | Intermediate | Advanced | Elite |
|---|---|---|---|---|
| 100 lb 45.4 kg | −5 lb −2.2 kg | −7 lb −3.2 kg | −14 lb −6.3 kg | −17 lb −7.7 kg |
| 110 lb 49.9 kg | −5 lb −2.3 kg | −9 lb −4.1 kg | −15 lb −6.8 kg | −18 lb −8.2 kg |
| 120 lb 54.4 kg | −5 lb −2.2 kg | −9 lb −4.1 kg | −15 lb −6.8 kg | −19 lb −8.6 kg |
| 130 lb 59 kg | −6 lb −2.7 kg | −9 lb −4.1 kg | −17 lb −7.7 kg | −20 lb −9.1 kg |
| 140 lb 63.5 kg | −6 lb −2.7 kg | −10 lb −4.5 kg | −17 lb −7.7 kg | −21 lb −9.6 kg |
| 150 lb 68 kg | −6 lb −2.7 kg | −10 lb −4.5 kg | −18 lb −8.2 kg | −22 lb −10 kg |
| 160 lb 72.6 kg | −6 lb −2.7 kg | −10 lb −4.5 kg | −19 lb −8.7 kg | −23 lb −10.4 kg |
| 170 lb 77.1 kg | −6 lb −2.8 kg | −11 lb −5 kg | −20 lb −9.1 kg | −24 lb −10.9 kg |
| 180 lb 81.6 kg | −6 lb −2.7 kg | −11 lb −5 kg | −20 lb −9.1 kg | −25 lb −11.3 kg |
| 190 lb 86.2 kg | −7 lb −3.2 kg | −12 lb −5.4 kg | −21 lb −9.5 kg | −26 lb −11.8 kg |
| 200 lb 90.7 kg | −8 lb −3.7 kg | −13 lb −5.8 kg | −22 lb −10 kg | −27 lb −12.3 kg |
| 210 lb 95.3 kg | −8 lb −3.6 kg | −12 lb −5.4 kg | −22 lb −10 kg | −27 lb −12.2 kg |
| 220 lb 99.8 kg | −8 lb −3.7 kg | −13 lb −5.9 kg | −23 lb −10.5 kg | −28 lb −12.7 kg |
| 230 lb 104.3 kg | −8 lb −3.6 kg | −13 lb −5.9 kg | −24 lb −10.9 kg | −30 lb −13.6 kg |
| 240 lb 108.9 kg | −8 lb −3.6 kg | −14 lb −6.3 kg | −24 lb −10.8 kg | −30 lb −13.6 kg |
Barbell JM Press and Barbell Floor Skull Crusher Exercises Used by This Calculator
This calculator uses a strict barbell JM press and a strict barbell floor skull crusher test. Use strict canonical Barbell JM Press and Barbell Floor Skull Crusher tests. Do not mix variations, assistance, partial range, momentum, or different load conventions.
Enter total barbell weight for a strict JM press
Use a flat bench and straight free-weight barbell. Lower under control toward a consistent high-torso target, preserve the triceps-dominant press-extension path, and finish at full elbow extension. Do not substitute a bench press, skull crusher, rolling extension, partial, bounced, assisted, Smith-machine, or overload-device rep.
Use the canonical Barbell Floor Skull Crusher setup and load convention
the entered weight for strict Barbell Floor Skull Crusher valid Barbell Floor Skull Crusher reps Lower the bar under control by bending the elbows toward the forehead, crown, or just behind the head, then extend the elbows to a controlled top position. A valid finish requires full elbow extension, stable wrists, controlled bar position, and no bounce into the next rep Consistent setup, range, and finish quality across the entered set No substituted exercise or assisted reps
Enter one recent Barbell JM Press result and one recent Barbell Floor Skull Crusher result
Use each exercise’s canonical input: Total barbell weight for Barbell JM Press and Weight used for Barbell Floor Skull Crusher.
Related Tools
- Barbell JM Press — View the individual Barbell JM Press standards and next strength-level target.
- Barbell Floor Skull Crusher — View the individual Barbell Floor Skull Crusher standards and next strength-level target.
- Barbell Close-Grip Bench Press — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.
- Lying Barbell Triceps Extensions — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.
- Barbell Floor Press — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.
- Triceps Pushdown (Cable) — Use this related standards tool to compare a registry-approved neighboring exercise without mixing its result into this comparison.