Running & Cardio
Improve your cardiovascular fitness with calculators for running pace, race predictions, heart rate training zones, VO2 max estimation, and target heart rate ranges.
Running Pace Calculator
Calculate pace, distance, or finish time for your runs with flexible unit conversions.
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Race Time Predictor
Predict race finish times at various distances using the Riegel formula based on a recent result.
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Heart Rate Zone Calculator
Calculate your five heart rate training zones using the Karvonen method with resting heart rate.
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VO2 Max Calculator
Estimate your VO2 max using the Cooper test or Rockport walk test for aerobic fitness assessment.
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Target Heart Rate Calculator
Determine your target heart rate range for specific exercise intensities using the Karvonen method.
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