Calculators
For running, cycling, swimming and triathlon. Results update as you type
- Running pace calculatorPace, speed and finish time. Pace zones from threshold
- Swim pace and CSS calculatorPace per 100 m, triathlon swim times, CSS estimate and zones
- Power zone calculatorFive zones from FTP and FTP per kilogram
- Triathlon time calculatorStage and transition times from sprint to full distance
- Heart rate zones: how to read themGuideWhat the four heart rate bands on a workout page mean
How we calculate
Each calculator works right on the page while you type. Pace, time and speed are plain arithmetic. The reference zone bounds are calculated on the TriCoo scale. Working targets for a plan workout can be narrower than these zones.
Zones from a threshold are for reference. The calculator does not check whether your threshold is right and does not pick a workout.
Common questions
Do I need to sign up to use them?
No. The calculators work without an account, and the numbers you enter stay in your browser.
Why is there no heart rate zone calculator?
TriCoo heart rate bands describe a workout you have already done. They are not built for setting targets. So for heart rate we have a guide with no calculation. See Heart rate zones: how to read them.