Loading...
Work out pace per 100m or 100y and project race split times.
Swimming pace is the time per 100 meters (or 100 yards), the universal metric for comparing swimming speed. It allows swimmers to set consistent split times across any race distance.
| Event | Distance |
|---|---|
| 50m Sprint | 50m |
| 100m | 100m |
| 200m | 200m |
| 400m / 500y | 400m |
| 800m / 1000y | 800m |
| 1500m / Mile | 1500m |
Formula
Pace per 100m (sec) = (Total Time (sec) ÷ Distance (m)) × 100Total Time = Total swim time in seconds
Distance = Total distance swum in meters
Worked Example
400m in 8:00 (480 seconds)
Did you know? The fastest 100m freestyle swim ever recorded is 46.86 seconds by Pan Zhanle (2024), equating to a pace of 0:47/100m or 7.68 km/h: about 3× faster than a typical recreational swimmer (source: World Aquatics).
Sources
Convert A1C to average glucose and back, with the full A1C chart and ADA bands.
Calculate BMR using 3 validated formulas. See daily calorie needs by activity level.
Estimate BAC using the Widmark formula. Enter drinks, weight, and hours to gauge impairment.
Predict a child's possible blood types from both parents, with probabilities.
Calculate BMI and see your weight category. Includes healthy weight range for your height.
Calculate body fat percentage using the US Navy method with simple body measurements.