10 free fitness tools for workouts, calculations, and training plans. No sign-up required.
Interval timer with work/rest periods, rounds, and audio cues
Calculate your estimated 1RM using Epley, Brzycki, and Lombardi formulas
Calculate running pace, distance, or time from any two values
Calculate your 5 heart rate training zones based on age
Calculate daily protein, carbs, and fat based on your goals
Calculate recommended daily water intake based on weight and activity
Estimate body fat percentage using the US Navy method
Pre-built workout plans for beginner, intermediate, and advanced levels
50+ exercises with descriptions, muscle groups, and difficulty levels
Guided stretching timer with preset routines and custom holds