How to use this tool
Enter your values, run the tool, then review the result cards. Most tools update automatically when inputs change, so you can test several scenarios quickly.
Example inputs
- Weight lifted: 80
- Reps: 8
Results this page provides
- Estimated 1RM
- 80% training weight
How it works
Uses the Epley formula for a quick strength estimate.
Best use cases
Estimate training loads without testing a true max.
Limitations
High-rep estimates become less reliable.