Heart Rate Calculator
Use this heart rate calculator to Estimate maximum heart rate and training zones from age and resting heart rate.
Heart rate zones • training heart rate zonesOpen calculator →Fitness Intelligence
Use educational fitness calculators for heart rate zones, target training intensity, running pace, walking pace, calorie burn, one-rep max, VO₂ max, cycling, and swimming estimates.
Important fitness disclaimer
Health calculators on ToolsBing are for general education and planning only. They are not medical advice, diagnosis, treatment, or a substitute for a qualified clinician. Seek urgent care for severe symptoms, pregnancy concerns, chest pain, breathing difficulty, fainting, or any emergency. Fitness calculators are for general planning only. They cannot assess injury risk, medical conditions, training readiness, or emergency symptoms.
Target Heart Rate Calculator
Use this target heart rate calculator to Estimate target heart rate zones for light, moderate, vigorous, and high-intensity training.
Target zone • target training intensityOpen calculator →Running Pace Calculator
Use this running pace calculator to Convert distance and time into running pace, speed, and finish-time context.
Running pace • pace and finish timeOpen calculator →Walking Pace Calculator
Use this walking pace calculator to Estimate walking pace, speed, and session effort from distance and time.
Walking pace • walking pace and session effortOpen calculator →Calorie Burn Calculator
Use this calorie burn calculator to Estimate calories burned from activity type, body weight, and duration.
Calories burned • activity energy estimateOpen calculator →One Rep Max Calculator
Use this one rep max calculator to Estimate one-rep max and training percentages from weight lifted and repetitions.
Estimated 1RM • strength estimateOpen calculator →VO₂ Max Calculator
Use this vo2 max calculator to Estimate VO₂ max from resting heart rate and maximum heart rate using an educational formula.
Estimated VO₂ max • cardiorespiratory fitness estimateOpen calculator →Cycling Calculator
Use this cycling calculator to Estimate cycling speed, distance, time, and calorie burn from ride inputs.
Cycling estimate • ride pace and caloriesOpen calculator →Swimming Calculator
Use this swimming calculator to Estimate swimming pace, distance, session time, and calorie burn with safe context.
Swimming estimate • swim pace and caloriesOpen calculator →How to use fitness estimates safely
Use these tools to compare training scenarios, estimate zones, and plan questions. Start conservatively if you are returning after a break, managing symptoms, pregnant, injured, or changing intensity.
What Phase 8.3 adds
- Nine connected fitness calculators.
- Heart rate, pace, calorie burn, strength, VO₂ max, cycling, and swimming estimates.
- Metric and imperial support where relevant.
- Safety-first result interpretation and related health calculator recommendations.