Sports & Fitness
5 tools available
Pace calculators, calorie burn trackers, rep max calculators, and training tools.
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Pace Calculator
Calculate running pace, time, or distance. See split times for 5K, 10K, half marathon, and marathon distances.
Calories Burned Calculator
Estimate calories burned for 20+ activities using MET values. Enter your weight, activity, and duration to see results.
One Rep Max Calculator
Estimate your one rep max using Epley, Brzycki, Lombardi, and O'Conner formulas. Includes a training percentage chart.
Target Heart Rate Calculator
Calculate your heart rate training zones using the Karvonen formula. See recovery, fat burn, cardio, peak, and max zones.
Race Time Predictor
Predict your finish times for any race distance using the Riegel formula. Enter a known result and get predictions for 5K, 10K, half marathon, and marathon.