Free tool by Watts

Tire pressure calculator

Optimal front and rear pressure for road, gravel and track — based on real-world pro data.

Rider + bike + gear

Not sure which to pick?
mm

Width measured with calipers (mm), not nominal. If unsure, use the printed nominal — usually 1–2 mm off.

km/h
🏁 Built around your race

Got an event coming up?

Add your race and Watts builds the whole plan around it.

  • Periodization that peaks on race day
  • Taper, race-week recovery, sleep plan
  • Pacing strategy and start-line targets

This calculator estimates the fastest pressure based on real-world data from professional athletes. It does not validate compatibility between your specific rim and tire. If manufacturer specs are stricter than the recommendation, follow the manufacturer.