حاسبة مناطق القدرة في الدراجات (FTP).

Test protocols vary; estimates from short tests can differ from a long effort. Everything is calculated in your browser; nothing you type is uploaded.

FTP ≈ 95 % of 20-minute power or 75 % of the best ramp minute. Zones follow Coggan’s percentages of FTP.

An FTP of 250 W at 72 kg is 3.47 W/kg, with the threshold zone at 228–263 W.