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Lombardi 1RM Calculator
Estimated one-rep max using the Lombardi formula.
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Estimated 1RM
Compare Your Options And Get Clear Answers
Estimated one-rep max using the Lombardi formula.
Lombardi 1RM Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: 1RM = weight x reps^0.10
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Lombardi Quick Guide
Typical values for reference.
| Weight lifted (kg) | Repetitions | Spare | Estimated 1RM |
|---|---|---|---|
| 80 | 8 | 0 | 98.5 kg |
| 100 | 5 | 0 | 117 kg |
| 40 | 12 | 0 | 51.3 kg |
| 140 | 3 | 0 | 156 kg |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Lombardi 1RM Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
1RM = weight x reps^0.10
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.