Fitness Calculators
Training, pace, heart rate and hydration calculators.
- Calories Burned CalculatorEstimate calories burned in a session from activity type, body weight and duration.
- Heart Rate Zone CalculatorCalculate maximum heart rate and five training zones, with optional Karvonen zones.
- Marathon Pace CalculatorFind the exact pace per mile and per kilometre needed to hit your marathon goal time, with split times along the way.
- Pace CalculatorConvert distance and time into pace per mile and per kilometre, plus race-distance finish times.
- Race Pace CalculatorSet a goal time for any race distance and get the pace, speed and splits required to run it.
- Running Pace CalculatorWork out your running pace, finish time or distance - enter any two and the calculator solves for the third.
- Water Intake CalculatorEstimate daily water intake from body weight, exercise time and climate.
- Weight ConverterConvert between kilograms, pounds, stones, grams and ounces instantly and precisely.