Stopwatch Split Calculator

Does the sums on stopwatch readings you have written down.

Total time

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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.

Laps —

Average lap —

Fastest lap —

Slowest lap —

Lap by lap

Reading this —

The formula

lap time = this split − the split before it average lap = total time ÷ number of laps

A split is the running total when the lap ended. A lap time is just that lap.

Leave unused rows at zero. To plan the splits for a target race time, use the split times calculator.

What is the difference between a split and a lap time?

A split is the total time so far, and a lap time covers that lap alone. Splits of 1:05.20 and 2:12.80 mean the second lap took 1:07.60.

How do I work out an average lap?

Divide the total time by the number of laps. 4:28.60 over 4 laps averages 1:07.15.