Bike Tire Pressure Calculator — Find Your Bike Tire PSI
The bike tire pressure calculator that gives you the right front and rear bike tire psi (or bar) for your weight, surface, pace and tire width — road, gravel, MTB and track.
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Gravel tire pressure guide
How to choose pressure for packed dirt, loose gravel and chunky rock.
Gravel tire pressure guideMTB tire pressure guide
How to choose pressure for hardpack, trail, rocks and roots.
MTB tire pressure guideBefore you inflate
The numbers here come from Pressure Lab Cycling's own model, derived from openly published cycling research: tire drop and casing deflection tables, independent rolling-resistance and impedance studies, and commonly published weight-distribution figures. It is an estimate of a fast, comfortable pressure — the app knows nothing about your specific rims, tires, valves or how well they're maintained, and it cannot judge whether your components are compatible with each other. Your component manufacturers' limits always win: if a result sits above any stated maximum, lower the pressure or change the setup.
Tubeless and hookless wheels in particular are unforgiving about over-inflation. Exceeding a rim or tire rating can blow the tire off the rim, damaging equipment and causing serious injury. Use your own judgement and ride within spec.
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