Pedalmath

Cycling calculators you can trust

Tire pressure, gear ratios, chain wear — built on real industry data. Free, no signup, six languages.

Calculate tire pressure →

Industry-grade math

Calibrated against real-world cycling data, separately per bike type. Not a generic chart.

6 bike types

Road, gravel, MTB, city, fat, touring — each with the right pressure curve and weight distribution.

Free, multilingual

No signup, no ads. Russian, English, German, French, Spanish, Japanese.

Calculators

Tire pressure calculator

Optimal pressure for any bike type, separately for front and rear wheels. Accounts for surface, weather, riding style. PSI and Bar.

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How it works

Pedalmath uses physical models tuned against real cycling data. Tire pressure is calculated from rider+bike weight, tire width, surface type and bike geometry — then adjusted for tubeless setup, weather and riding style. The result is shown as a ±5% range, because pressure isn't a single number — it's a small window where comfort, grip and rolling efficiency balance.

Frequently asked questions

Why calculate tire pressure?

Wrong pressure costs you watts on the road, traction on dirt, and pinch flats on square hits. The right pressure makes the bike feel planted, faster and more comfortable.

How accurate are the results?

The calculator is calibrated against real-world pressure data and stays within ±5 PSI of typical recommendations for road, gravel and MTB setups. Use it as a starting point and fine-tune by feel.

Is it really free?

Yes. No signup, no premium tier, no paywalls. The site runs on free hosting. If you find it useful, share it with a riding buddy.

What about tubeless and hookless rims?

Tubeless is the default — flip the toggle if you run inner tubes (we add about 8 PSI). For hookless rims we cap output at 72.5 PSI and warn you if the recommended pressure would exceed that limit.

Coming soon