RepolveGet the appBarbell Curl strength calculator.
Estimate your one-rep max and compare it with Repolve’s barbell curl reference.
Calculate your barbell curl score
Enter the total barbell weight, including the bar. Use a completed set of 1–12 reps. Inputs stay in your browser.
A worked barbell curl example
Illustrative completed set using the current scoring model.
- Completed set
- 20 kg × 5 reps
- Estimated 1RM
- 23.3 kg
- Exercise score
- 23 · beginner
Illustrative example using 80 kg bodyweight and male standards. Choosing female standards changes the exercise score, not the estimated max. This is one exercise score, not an overall Strength Score.
Barbell Curl rep-to-max examples
Each row uses a completed set at 20 kg. Enter the total barbell weight, including the bar. These are formula examples, not suggested loads to attempt.
| Completed reps | Estimated 1RM |
|---|---|
| 1 | 20.0 kg |
| 3 | 22.0 kg |
| 5 | 23.3 kg |
| 8 | 25.3 kg |
| 10 | 26.7 kg |
| 12 | 28.0 kg |
A one-rep set uses the entered load. Sets of 2–12 reps use weight × (1 + reps ÷ 30). The result estimates a single repetition; it is not a guarantee that you can lift that weight.
Muscles worked
The app lists biceps as the primary muscle group. In Repolve’s scoring model, this exercise supplies primary evidence for biceps. Training involvement and scoring coverage are different things.
Make your sessions comparable
Use a consistent range of motion, technique and equipment when comparing sessions.
How the estimate works
For a single rep, the estimate is the load entered. For 2–12 reps, the production engine uses the Epley estimate: weight × (1 + reps ÷ 30). It compares the resulting estimated max with bodyweight and the exercise’s sex-specific thresholds. This is an estimate from a completed set, not a prescription for your next attempt.
Barbell Curl strength standards
These example milestones come directly from Repolve’s scoring model. They describe exercise benchmarks, not population percentiles or age-adjusted rankings.
| Reference | Score | Male, 80 kg bodyweight | Female, 60 kg bodyweight |
|---|---|---|---|
| Beginner | 20 | 20.9 kg | 11.2 kg |
| Novice | 40 | 35.6 kg | 19.1 kg |
| Intermediate | 60 | 48.6 kg | 26.1 kg |
| Upper intermediate | 80 | 60.7 kg | 32.5 kg |
| Advanced | 100 | 72.1 kg | 38.6 kg |
| Elite | 125 | 85.9 kg | 46.0 kg |
These examples use fixed bodyweights. Enter your bodyweight above for your own score. References adjust nonlinearly with bodyweight; these are not universal bodyweight ratios.
Enter the total barbell weight, including the bar. The same unit must be used for the lift and bodyweight. Understand the standards · Sources and scoring choices
Track progression
Track comparable completed sets over time. Scores are estimates of performance, not prescriptions.
Learn how to compare strength progress · Understand your Strength Profile
Common variations
Related exercise names do not guarantee equivalent loads. Select the exercise you performed.
Barbell Curl calculator questions
What weight should I enter?
Enter the total barbell weight, including the bar.
Is this a population percentile?
No. Repolve scores are product benchmarks. Exercise translations are provisional and may change as evidence improves.
Related lift calculators
About this calculator
Written by Repolve to explain its own scoring model. Calculations and benchmark tables use the same engine and exercise standards as the app. Worked examples are illustrative, not customer results. Estimates describe logged performance; they do not directly measure muscle size or diagnose a training imbalance.