Pace Percentage Calculator

Percent of Pace vs. Percent of Speed

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Forward and Backward Calculations

Often, you'll have a workout that goes better than expected: suppose you ran five miles at 90% of 5K pace and had a great day, averaging 5:24/mi even though your plan was to run 5:30/mi. You can switch to "reverse mode" (just click the flip icon) to figure out what original pace would've yielded 5:24 at 90%—in this case, it's 4:52/mi.

Calculator Settings

This calculator will remember your settings using browser storage. When you come back to the calculator later, you'll be able to pick up where you left off. You can reset all settings to their defaults using the clear button.