Health & FitnessFormula-based · Runs in your browser

Pace Calculator

Calculate pace, elapsed time, or distance and generate cumulative split estimates in kilometers, miles, meters, or yards.

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Inputs

Enter the values you know. Optional fields may be left empty.

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Result

Updates as valid inputs change.

Calculated locally
Race projections assume a constant pace and do not account for terrain, fatigue, weather, or stops.
Pace
Elapsed time
Distance
Speed
Speed
Marathon time at this pace

Saved locally, explained clearly

Drafts, calculations, scenarios, and workflow progress stay in this browser unless you export them.

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Calculation steps

Follow what happened from the selected formula to the displayed answer.

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Calculate current inputs to see the working.
  1. 1

    Formula selected

    The calculator uses the following formula or method.

    pace = time ÷ distance; time = pace × distance; distance = time ÷ pace, after converting to one consistent distance unit.

  2. 2

    Values entered

    Your values are placed into the calculation.

    Enter values to see what is used in this step.

  3. 3

    Result calculated

    The formula or method produces the following result values.

    Results will appear after a successful calculation.

  4. 4

    Answer formatted

    Displayed values are rounded and formatted using each output’s configured precision.

Scenario comparison

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Recent calculations

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Data and privacy

How it works

Choose whether to solve for pace, time, or distance. Enter the other two quantities and keep all distance values in the selected unit.

Input query strings and outputs

Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.

Input query strings

8
  • ?solveFor= Calculate

    Choice · Required · Default: pace · Accepted values: pace, time, distance

  • ?distanceUnit= Distance unit

    Choice · Required · Default: km · Accepted values: km, mi, m, yd

  • ?distance= Distance

    Number · Required · Default: 5

  • ?hours= Elapsed time: hours

    Number · Required · Default: 0

  • ?minutes= Elapsed time: minutes

    Number · Required · Default: 25

  • ?seconds= Elapsed time: seconds

    Number · Required · Default: 0

  • ?paceMinutes= Pace: minutes per selected unit

    Number · Required · Default: 5

  • ?paceSeconds= Pace: seconds per selected unit

    Number · Required · Default: 0

Outputs

6
  • pace Pace

    Text · Primary output

  • time Elapsed time

    Text

  • distanceResult Distance

    Text

  • speedKph Speed

    Number · Suffix: km/h

  • speedMph Speed

    Number · Suffix: mph

  • marathonTime Marathon time at this pace

    Text

Split table

The table projects cumulative times at whole-unit splits. It is a constant-pace model and does not predict real race performance.

Sources
Limitations
  • Race projections assume a constant pace and do not account for terrain, fatigue, weather, or stops.
  • Health results are educational estimates, not a diagnosis or treatment recommendation. Individual circumstances may require a qualified clinician's assessment.