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Health & Fitness

FIT workouts, heart rate zones, Apple Health data, pace and body measures. 6 free tools that run 100% in your browser.

  • FIT File Converter & Viewer: Open Garmin, Wahoo, Coros and Zwift FIT files, see the stats, route and charts, and convert to CSV, GPX, Excel or JSON.
  • Heart Rate Zones: See time in each heart rate zone and the training load (TRIMP) of a workout from FIT, TCX or GPX.
  • Apple Health Export to CSV: Turn the huge Apple Health export.zip into tidy CSV files per type, with daily totals and averages.
  • Running Pace Calculator: Work out pace, time or distance, see splits, and predict 5K, 10K, half and full marathon times.
  • BMI, BMR & Calorie Calculator: Body mass index, resting and daily energy needs, body fat from a tape measure, and a healthy weight range.
  • AI Meal Photo Logger: Snap your meals and get a rough calorie log: a small AI model guesses each dish on your device.

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