Exercise Legend · The Toolbox
Training Tools
Fast, free calculators built on published sports-science formulas. No sign-up, nothing saved — numbers in, answers out. Run one before your next session.
011RM
One-Rep Max
Estimate your 1RM from any sub-maximal set and read off the loads for every rep bracket.
Open tool02kcal / day
Calories & Macros
Dial in daily calories and a protein/fat/carb split for your bodyweight and goal.
Open tool03min / mi
Pace & Race Predictor
Turn one finish time into your pace, speed, and equivalent times from the mile to the marathon.
Open tool