Cycling

Calculate front and rear bicycle tire pressures from rider weight, measured tire and rim width, surface, setup, temperature, and safety limits.

Calculate bike chain cut length from chainstay, gear teeth, suspension growth, and stock links with formula comparison and fit warnings.

Calculate Friel heart rate zones from LTHR or field-test averages, with sport-specific bands, current-HR lookup, session planning, and exports.

Convert MPG (US), L/100 km, and km/L with direction cues, warning checks, rounded equivalents, and a charted consumption curve.