# Estimate a load

GET query params (same names as `/api/v0/loads`):

- `one_rep_max` (required)
- `reps` (required)
- `formula` (default: epley)
- `unit` (default: kg)
- `rpe` or `rir` (not both)

Leftover-rep RPE/RIR, not the Helms % chart.

These tools estimate or convert numbers. They are not a training plan.

Live UI: [/calculator/load](/calculator/load)