Find your pressure.

Bike weight and tire width are examples. Use your actual setup. Include clothing, bags and water once, under gear.

Enter the width printed on the tire sidewall. For hookless setups, check model, size and pressure requirements from both tire and rim manufacturers.

More settings covers rim width, casing, manufacturer limits and measured loads. Limit units follow PSI / BAR. Leave unknown minimums blank, not zero. The estimate assumes a compatible setup; follow both manufacturers’ requirements.

To measure loads, keep both wheels level and sit in your normal riding position with gear while a helper holds the bike. Front and rear loads should add up to total weight.

Calculation stays in your browser. Remember settings saves inputs only on this device; uncheck it to clear them.