How is pace per 100m calculated?

Pace per 100m = total time in seconds ÷ (total distance in meters ÷ 100). For example, 500m in 10 minutes (600 s) gives 600 ÷ 5 = 120 s/100m, or 2:00 per 100m.

What is the conversion between meters and yards?

1 yard = 0.9144 meters exactly. A 25yd pool is 22.86m; a 50yd pool is 45.72m.

Can I use this for open-water swimming?

Yes. Enter 1 lap and set your total distance in the pool-length dropdown equivalent, or use Predict time mode and enter a target distance in meters or yards matching your open-water course.

What does the split per lap represent?

The split per lap is your average time to complete one pool length at the calculated pace. It assumes a perfectly even effort throughout the swim.

Does this account for turns or rest intervals?

No. The calculator assumes continuous swimming. If you include rest intervals in your total time, the pace will reflect rest-inclusive average speed, not pure swimming pace.

Swim Pace Calculator

Name: Swim Pace Calculator
Availability: InStock
Author: Nham Vu

Enter your pool size, lap count, and total time to get pace per 100m/yd and per-lap splits — or enter a pace to predict your finish time for any target distance.

Swim Pace Calculator

Mode

Pool Length

Number of Laps

Total Time

min

sec

Enter your swim details on the left, then press Calculate

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Summary

Enter your pool size, lap count, and total time to get pace per 100m/yd and per-lap splits — or enter a pace to predict your finish time for any target distance.

How it works

Select your pool length from the dropdown (25m, 50m, 25yd, or 50yd).
In "From time" mode: enter the number of laps and your total swim time in hours, minutes, and seconds, then press Calculate.
In "Predict time" mode: enter your known pace per 100m (or 100yd) and a target distance, then press Calculate.
The results panel shows total distance, pace per 100m and per 100yd, estimated split per lap, and swim speed in km/h and mph.
Press Reset to clear all fields and start a new calculation.

Use cases

Swimmers can determine their training pace after a timed practice set.
Triathletes can predict open-water swim splits based on pool pace.
Coaches can set target paces for athletes across different pool configurations.
Fitness swimmers can track improvement by comparing pace across sessions.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu