Pace Calculator
Calculate running pace, time, or distance. See split times for 5K, 10K, half marathon, and marathon distances.
For informational purposes only. Not a substitute for professional medical advice. Consult a healthcare provider before making changes to your diet or exercise routine.
About Pace Calculator
The pace calculator is an essential tool for runners of all levels. It handles three types of calculations: finding your pace from a known distance and time, predicting your finish time at a given pace, or working out how far you can go in a set time at a specific pace.
Three Calculation Modes
Find Pace takes your distance and time to calculate your pace per km or mile. Find Time takes your distance and pace to predict how long a run will take. Find Distance takes your pace and time to calculate how far you will go. Each mode also shows your speed in km/h or mph.
Split Times Table
Once your pace is calculated, the split times table shows projected finish times for standard race distances: 1K, 5K, 10K, half marathon (21.1 km), and full marathon (42.2 km). This is particularly useful for race planning and setting realistic goals.
Metric and Imperial
Switch freely between kilometres and miles. Pace and speed are automatically converted between min/km, min/mile, km/h, and mph. Pair this with the calories burned calculator to estimate the energy cost of your runs, or use the target heart rate calculator to train at the right intensity.
Privacy
All calculations run in your browser. No data is collected or stored.
Frequently Asked Questions
How do I calculate my running pace?
Divide your total time by the distance covered. For example, if you ran 5 km in 25 minutes, your pace is 5 minutes per km. This calculator handles the math for you and converts between kilometres, miles, and speed units.
What is a good running pace?
This varies hugely by fitness level, age, and experience. For recreational runners, a 5K pace of 6 to 7 minutes per km (10 to 11 minutes per mile) is common. Competitive runners aim for under 4 minutes per km. The most important thing is to find a pace that is sustainable and progressively improve from there.
What is the difference between pace and speed?
Pace measures time per distance unit (like 5 minutes per km), while speed measures distance per time unit (like 12 km per hour). Runners typically use pace because it directly relates to how their effort feels over a given distance. The calculator shows both.
How do I use split times for race planning?
Split times show how long each segment of a race should take at your target pace. For a marathon, you can see your expected time at every 5K, 10K, and halfway point. Running even splits (consistent pace throughout) is generally considered the most efficient race strategy.
Can I use this for cycling or swimming?
Yes. The pace and speed calculations work for any distance-based activity. The distance presets are running-focused, but you can enter any distance manually. The core math of pace, time, and distance applies to all endurance sports.