Swim Pace Calculator
Calculate your pace per 100m or 100yd, work out splits for any distance, and convert between meters and yards. Free, no signup, works offline.
Formula: pace per 100 = (total time ÷ distance) × 100. Speed = distance in meters ÷ time in seconds.
How to use the swim pace calculator
Enter the distance you swam and your total time. The calculator returns your pace per 100 meters (or yards), per 50, and your average speed in mph, km/h, and m/s. To plan a workout or race, switch to "Time from pace" — or use the dedicated swim time calculator to predict a finish time from a target pace, and the swim split calculator to create target swim splits for a goal race.
Pace per 100m vs per 100yd
1 yard equals 0.9144 meters, so a pace per 100m is slightly slower in time than the same effort over 100yd. Use the converter tab to switch between pool standards, or open the full swim pace chart to compare finish times across a range of paces in either unit.
What is a good swim pace?
There is no single "good" swim pace. What counts as fast depends on distance, stroke, experience, fitness, pool length (more turns generally mean faster splits), and whether you are swimming in a pool or in open water. A comfortable 100m pace for a sprint is very different from a sustainable pace for a 1500m or 3800m swim.
As broad examples only: many new adult swimmers work in roughly the 2:30–3:30 per 100m range for easy freestyle, regular fitness swimmers often settle somewhere around 1:45–2:15 per 100m, and competitive pool swimmers routinely swim well under 1:20 per 100m. Use these as loose reference points, not targets.
The most useful benchmark is your own pace over time. Log a repeatable test set (for example, a 400 for time every few weeks) and compare against your own history rather than against a table.
FAQ
Does this work for open water swimming?
Yes. Enter your GPS distance and total elapsed time. Open water pace is typically slower than pool pace because of sighting, currents, chop, and no wall push-offs, but the exact difference varies widely by conditions and swimmer.
How accurate are the splits?
Splits assume a perfectly even pace across the whole distance. Real swims rarely hold an exact even split, so treat these numbers as a target rather than a prediction.
Why does my watch show a different pace?
Most swim watches report pace per 100, but some default to per 100yd in a 25yd pool and per 100m elsewhere. Check your watch units and use the converter tab to compare.
What is a good swim pace for a beginner?
There is no single number. A comfortable freestyle pace for a new adult swimmer is often somewhere in the 2:30–3:30 per 100m range, but this depends heavily on stroke technique, fitness, and how far you are swimming.
How do I convert pace per 100 yards to pace per 100 meters?
Multiply your pace per 100yd by 1.0936 to get pace per 100m. For example, 1:30 per 100yd (90 seconds) is about 1:38 per 100m (98.4 seconds). The converter tab does this automatically.
More Swimming Calculators
Swim pace chart
Generate a full grid of finish times across a range of paces for standard distances and the mile, in yards or meters.
Swim time calculator
Calculate a swim finish time from a target pace and distance, with speed outputs and pool-length counts.
Swim split calculator
Create target swim splits for a goal time using even or mild negative-split pacing, then print or share the card.