strength
Compare only against the same machine and foot setup.
Estimated 1RM
Recommended training max
Formula spread
Best use
Formula range
253.1-267.8 lb
Spread: 14.7 lb / 5.6%
Training max guidance
Use the recommended training max for multi-week programs. Current load rounding uses 5 lb jumps and nearest rounding.
Sustainable range: 220-245 lb. Pick the lower end when reps are high, the spread is wide, or the set used RIR adjustment.
Scroll table horizontally
| Percent | Load | Rounding | Reps | Purpose | Plates |
|---|---|---|---|---|---|
| 100% | 265 lb | +2.5 lb | 1 | Max strength | Load |
| 95% | 250 lb | +0.6 lb | 2 | Max strength | Load |
| 90% | 235 lb | -1.2 lb | 3-4 | Max strength | Load |
| 85% | 225 lb | +1.9 lb | 5-6 | Strength | Load |
| 80% | 210 lb | exact | 7-8 | Strength | Load |
| 75% | 195 lb | -1.9 lb | 9-10 | Hypertrophy | Load |
| 70% | 185 lb | +1.3 lb | 11-12 | Hypertrophy | Load |
| 65% | 170 lb | -0.6 lb | 13-15 | Technique or endurance | Load |
| 60% | 160 lb | +2.5 lb | AMRAP | General work | Load |
| 55% | 145 lb | +0.6 lb | AMRAP | General work | Load |
| 50% | 130 lb | -1.2 lb | AMRAP | General work | Load |
Recent estimates
Save a result to track your estimated max by lift on this device. Nothing is uploaded.
Estimate your leg press 1RM from repeatable sets on the same machine. Compare seven formulas and build practical lower-body loading targets.
The calculator runs Epley, Brzycki, Lombardi, O'Conner, Mayhew, Wathan, and Lander formulas. For most barbell lifts, sets of 2-8 reps are more useful than high-rep sets because fatigue and conditioning distort the estimate.
Training Max Calculator
Turn an estimated 1RM into a conservative 85-95% training max for percentage-based blocks.
Plate Calculator
Calculate exactly which plates to load on each side of the bar in pounds or kilograms.
Bench Press 1RM Calculator
Compare seven formulas and choose a conservative bench press training max from the estimate range.
Squat 1RM Calculator
Estimate squat 1RM from a consistent-depth working set and turn it into practical training loads.
Deadlift 1RM Calculator
Estimate deadlift 1RM from a low-rep set while accounting for grip, stance, and recovery cost.
5/3/1-Style Calculator
Build a simple four-week percentage wave from your training max with rounded barbell loads.
Enter a recent hard set with clean reps. The result is best used as a training max input, not as proof that you can hit the number today.
Two to eight reps is the useful range for most lifters. Above 10 reps the estimate becomes more sensitive to conditioning, pacing, and technique breakdown.
Yes. Round to plates you can actually load. The calculator uses practical plate increments for pounds and kilograms.
