Training calculators for running, strength and cardio

Estimate your one-rep max from a weight you lifted for reps, get a percentage-based training-load table, and see where your lift sits from Beginner to Elite.

Swap one cardio modality for another at equal effort — running, rowing, cycling, SkiErg — and get HYROX station substitutions built around the equipment you have.

Convert between pace, speed and finish time, and predict your race time for another distance from a recent result — 5K, 10K, half or marathon.

Load any barbell without the mental math — see the plates per side, the closest weight you can actually make, and your Wilks relative-strength score.