Fitness & training calculators
11 free calculators · instant · nothing you enter is uploaded
Training works when the load is hard enough to adapt to and easy enough to recover from, and the numbers behind that are easier to work with than they look. These calculators estimate one-rep maximums, heart-rate training zones, aerobic capacity and the calories burned by walking, running, cycling and swimming. Use them to set a starting intensity and to see progress, and remember that an estimate from a formula is a starting point for a session, not a target to hit at any cost.
One Rep Max Calculator
Estimate your 1RM from any set.
Target Heart Rate Calculator
Max HR and five training zones.
VO2 Max Calculator
Estimate aerobic capacity three ways.
Running Pace Calculator
Pace, speed and race predictions.
Pace & Split Calculator
Pace per km and mile, plus 5 km splits.
Race Time Predictor
Predict your time at other distances.
Heart Rate Reserve Calculator
Training zones by the Karvonen method.
Swimming Calories Calculator
Calories burned by stroke and time.
Cycling Calories Calculator
Calories burned riding, by intensity.
Walking Calories Calculator
Calories burned walking, by pace.
Treadmill Incline Calculator
Outdoor effort from speed and incline.