Running pace calculators

Use a pace converter when you have a time, a distance or a treadmill speed and need pace. Use a race planning tool when you have a goal finish time or a recent result and need paces, splits or a prediction.

Pace converters

• 5K in 25:008:03 per mileMile pace calculatorEnter a distance and a time. Get pace per mile and per kilometer, speed and mile-by-mile splits.
• 7.1 mph8:27 per mileMPH to min/mile converterTurn the speed on a treadmill display into pace, with a treadmill speed chart and finish times.
• 8:00 per mile4:58 per kmMile to km pace calculatorConvert pace between minutes per mile and minutes per kilometer, with kilometer-marker times.
• 12 km/h5:00 per kmSpeed to pace calculatorConvert running speed in km/h or mph to pace per kilometer and per mile.
• 5K average pace, men / women7:04 / 8:18 per kmAverage running paceAverage pace by distance from 107.9 million race results, and a tool to compare your own pace.
• 4:00 to 15:0045 paces per mileRunning pace chartMin/mile, min/km, mph, km/h, 400 m lap and race finish times for every pace from 4:00 to 15:00 per mile.

Race planning

• 5K in 25:0010K in 52:07Race time predictorPredict your time at another distance from a recent race, with the evidence on where the formula runs fast.
• 5K 25:00 and 10K 52:30Exponent 1.07Riegel exponent calculatorFind your own fatigue exponent from two race results and predict other distances with it.
• 5K in 25:00VDOT 38.3Training pace calculatorTurn a recent race into easy, threshold, interval and repetition paces, plus equivalent race times.
• 5K goal 25:008:03 per mile5K pace calculatorGoal time to pace per mile and per kilometer, with kilometer and mile splits.
• 10K goal 50:008:03 per mile10K pace calculatorGoal time to pace, speed and splits for a 10K.
• Half goal 1:45:008:01 per mileHalf marathon pace calculatorGoal time to pace and checkpoint splits for 13.1 miles.
• Marathon goal 4:00:009:09 per mileMarathon pace calculatorGoal time to pace and checkpoint splits for 26.2 miles.

How the tools work together

1. Start with a recent result in the mile pace calculator to see your current pace.
2. Look up that pace in the pace chart to see matching speeds and finish times.
3. Use the race time predictor or the training pace calculator to turn the result into goals and training paces.
4. Plan the race with the 5K, 10K, half marathon or marathon calculator, which list the splits to expect at every mile and kilometer.
5. If you run on a treadmill, convert the display speed with the mph to min/mile converter.

What every calculator has in common

Every tool uses the same tested formulas, shows results as minutes and seconds, and runs in your browser, so the numbers you type are not sent to a server. The constants and sources are described in the methodology, and the limits of each method are stated on its page. Results are estimates for planning. Read the disclaimer before using them to plan hard efforts.