FREE FITNESS TOOL
Fitness Converter
All the conversions athletes and gym-goers need in one place. Weight, height, distance, running pace, calories, and body measurements.
Weight
Height
Distance
Running Pace and Speed
Enter pace as min:sec (e.g. 5:30) or a decimal minute value.
Energy and Calories
Body Measurements (Waist / Chest / Hips)
Use this for any circumference measurement - waist, chest, hips, arms, and so on.
Why Use Our Fitness Converter?
Weight: kg, lbs, and Stone
Convert between kilograms, pounds, and stone simultaneously. All three update live as you type - no separate calculators needed.
Height: cm to Feet and Inches
Enter your height in centimeters and get feet and inches instantly, or enter feet and inches to get cm. Great for international gym apps and fitness profiles.
Distance: km, Miles, and Meters
Convert race and training distances in one place. Includes quick-reference conversions for 5K, 10K, half marathon, and full marathon.
Running Pace and Speed
Convert between min/km, min/mile, km/h, and mph all at once. Enter a pace or speed and every other value updates instantly.
Calories to Kilojoules
Convert between kcal, kJ, and small calories. Includes context for daily intake targets and estimated burn rates per km of running.
Body Measurements
Convert any circumference measurement - waist, chest, hips, arms - between centimeters and inches. Includes a quick-reference table for common waist sizes.
Frequently Asked Questions
How do I convert kg to lbs?
Multiply kilograms by 2.20462 to get pounds. For example, 80 kg equals 176.37 lbs. You can also use the weight section above - just type in kg and the lbs field updates instantly.
How do I convert my height from cm to feet and inches?
Divide the centimeters by 2.54 to get total inches, then divide by 12 to get feet. For example, 180 cm = 70.87 inches = 5 feet 10.87 inches. The height section above handles all this automatically.
How do I convert running pace from min/km to min/mile?
Multiply your min/km pace by 1.60934 to get min/mile. A 5:00 min/km pace equals approximately 8:03 min/mile. The pace section above converts all four values simultaneously.
How many kilometers is a mile?
One mile equals 1.60934 kilometers. Conversely, one kilometer equals 0.62137 miles. Common race distances: 5K = 3.107 miles, 10K = 6.214 miles, half marathon = 13.109 miles, full marathon = 26.219 miles.
What is the difference between kcal and kJ?
One kilocalorie (kcal) equals 4.184 kilojoules (kJ). Food labels in the US use kcal (often just called Calories with a capital C). Labels in Australia, the UK, and Europe often show both. A 500 kcal meal equals 2092 kJ.
How do I convert stone to kg?
One stone equals 14 pounds, which equals 6.3503 kg. To convert stone to kg, multiply the stone value by 6.3503. For example, 12 stone = 76.2 kg. The weight section above converts kg, lbs, and stone all at once.
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