Turn a swim time and distance into pace per 100 metres, pace per 50 metres, speed and pool laps.
Runs in your browser — nothing is uploaded
Swimmers measure pace in time per 100 metres, the standard unit in coaching and race results. Dividing total time by distance, then scaling to 100 metres, gives a figure you can compare across workouts, pools and races.
Enter minutes, seconds and the distance you covered. The calculator shows your pace per 100 and 50 metres, your average speed in kilometres per hour, and how many lengths of a 25 metre pool the distance equals. Use the same course length for every session so your trends are meaningful.
Recreational adults often swim 100 metres in around 2 minutes to 2 minutes 30 seconds, while competitive swimmers may be under a minute and a half for freestyle at a sprint. Progress over time matters more than comparing with others.
It is the standard unit used in swim training sets and race splits. It lets you compare a 400 metre workout with a 1500 metre swim on the same scale.
Yes, but open water courses are often measured by GPS, which is less exact than a pool. Sighting, currents and turns mean open-water pace is usually slower than pool pace at the same effort.
A 25 metre pool requires 40 lengths to cover 1,000 metres, and a 50 metre pool needs 20 lengths for the same distance. Count each length as one, and turns at the wall count as part of the lap.
Short-course and long-course pools, heating and lane traffic all affect your speed. Compare sessions in the same pool when tracking progress.
No. The calculation runs in your browser and nothing is saved.