Running Pace Calculator

Enter any two of distance, time, or pace to get the third. Use presets for common races or type any value. Results in min/km and min/mile, plus splits and projections.

Runs locally in your browser. No data stored. No signup required.

Calculate

PaceTimeDistance

Distance

kmmi

Number only (e.g. 5 or 3.1). Use chips for common distances.

Popular race distances

Time

e.g. 25:00, 1:30:00, or 25 (minutes). Max 24 hours.

Your pace

5:00 /km

8:03 /mile

For 5.0 km in 25:00.

Pace & speed

min/km

5:00

min/mile

8:03

km/h

mph

7.5

Projected finish times

At your current pace.

1 km

5:00

25:00

10K

50:00

Half Marathon

1:45:29

Marathon

3:30:59

Splits

Per kmPer mile

Split	Cumulative time
1 km	5:00
2 km	10:00
3 km	15:00
4 km	20:00
5 km	25:00

Calculated from your inputs. For guidance only.

Frequently Asked Questions

How does the running pace calculator work?

Pick what you want to find—pace, finish time, or distance—then enter the other two. For example: distance and time give you pace; distance and pace give you finish time. Results show in min/km and min/mile. Use the preset chips for common distances or type any value. All processing happens in your browser; nothing is sent or stored.

How do I calculate my 5K or 10K pace?

Choose 'Calculate Pace', enter 5 or 10 as distance (or tap the 5K/10K chip), then enter your finish time in mm:ss (e.g. 25:30) or plain minutes. You get average pace in min/km and min/mile.

What is min per km and min per mile?

Pace is minutes per unit of distance. 5 min/km means one kilometer every 5 minutes. The tool shows both metric and imperial so you can train or race in either. Speed in km/h and mph is included.

Can I get a half marathon or marathon finish time from my pace?

Yes. Choose 'Calculate Time', enter the race distance (or use a preset chip), and your target pace. You get the projected finish time. The projections section also shows estimated times for standard race distances at your current pace.

Is this pace calculator free and private?

Yes. No signup required. Everything runs in your browser and no data is sent or stored.

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