Fitness Tools
12 free tools across nutrition, strength, endurance and race performance.
NUTRITION
TDEE Calculator
Find your daily calorie needs based on your age, size, and activity level. Calculate your Total Daily Energy Expenditure to optimize your nutrition.
Try NowProtein Calculator
Determine your optimal daily protein intake based on your bodyweight, training type, and fitness goals.
Try NowMacro Calculator
Calculate your daily macronutrient targets based on your weight, fitness goal, and activity level.
Try NowBody Fat Calculator
Determine your optimal daily protein intake based on your bodyweight, training type, and fitness goals.
Try NowBMI Calculator
Calculate your Body Mass Index to assess your weight status and potential health risks.
Try NowBOXROX TOOLS
Random WOD Generator
Generate a customized Workout of the Day based on your available equipment, preferred workout style, and time constraints.
Try NowHYROX Predictor
Estimate your HYROX finish time based on your run pace and station performance. Built for athletes who want to race smarter, not just harder.
Try NowSTRENGTH
1RM Calculator
Calculate your estimated one-rep max from any working set. Enter the weight you lifted and the reps completed — we'll do the math using the Epley formula.
Try NowStrength Percentage Calculator
Calculate your exact training weight for any percentage of your one-rep max. Perfect for programming your strength sessions.
Try NowENDURANCE
Running Pace Calculator
Enter any distance and finish time to calculate your exact pace per km and mile, plus projected finish times for major race distances.
Try NowZone 2 Calculator
Find your Zone 2 training range — the aerobic sweet spot for building endurance, burning fat, and improving cardiovascular health long-term.
Try NowVO2 Max Calculator
Estimate your aerobic capacity using a standard fitness test. VO₂ max is the single best predictor of cardiovascular fitness and endurance performance.
Try Now