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Calcimator

Swim Pacing Calculator

Calculate split times for any race distance based on your target pace per 100m, with negative split suggestions.

Inputs

sec
ft

Results

Total Race Time

25:00

Total Time1,500 sec
Split per 50m50 sec
Split per 100m100 sec
Negative Split: 1st Half Pace101.5 sec/100m
Negative Split: 2nd Half Pace98.5 sec/100m
How to Use This Calculator
  1. Enter your Target Pace per 100m in seconds (e.g., 90 = 1:30 per 100m).
  2. Select your Race Distance from the dropdown.
  3. Review Total Race Time, Split per 50m, and Split per 100m.
  4. Check the Negative Split paces (slightly slower first half, faster second half) for race strategy.
  5. Scroll through the split table to preview your cumulative time at each distance marker.

What each input means

Target Pace per 100m
Your target time for each 100m in seconds. For reference, 90 sec/100m = 1:30 pace.
Race Distance
Total race distance in meters. Common: 200, 400, 800, 1500 (pool) or 750, 1500, 1900, 3800 (open water).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Target Pace per 100m = 100, Race Distance = 1500 = 2 input(s) provided
  2. Calculate Total Race Time
    Total Race Time = `${totalMinutes
    25:00 = 25:00
  3. Calculate Total Time
    Total Time
    1500 = 1500
  4. Calculate Split per 50m
    Split per 50m
    50 = 50

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

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