Bike Pressure Calculators

The SILCA methodology — road, gravel, MTB and tubeless. Total system weight, tire width and surface type for precise results.

Exact front and rear pressure using the SRAM algorithm. Road, gravel, MTB and cyclocross — enter weight and tire width.

All bike types: road, MTB, gravel, hybrid, e-bike, fat bike. Adjusts for rider weight, tubeless setup and wet or dry surface.

Road-specific tool. ETRTO hookless limits, latex tube mode, Rene Herse speed-optimised pressure — for 23mm to 40mm tires.

XC, Trail, Enduro and DH. Nine inputs including discipline, casing, insert and suspension type for precise MTB pressure.

Gravel-only tool. Four surface categories from hardpack to chunky/loose, 28–55mm tire widths, 700c and 650b wheels.

Tubed vs tubeless PSI compared side by side for road, gravel and MTB. Enforces the ETRTO 72.5 PSI hookless limit automatically.

Dedicated e-bike pressure. Accounts for motor type (rear/front/mid-drive), battery location, cargo load and range-optimised settings.

Single-digit pressure for snow, sand and dirt. Eight surface conditions, 0.5 psi precision, tubeless watt savings and suspension fork.

City, comfort, folding and kids bicycles. ISO 406/451 wheel sizes, rear rack load and upright geometry adjustments.

Cars, SUVs, pickup trucks, motorcycles and trailers. Ideal Gas Law altitude offset included.