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E-Bike

E-Bike Max Speed Calculator

Estimate theoretical top speed from battery voltage, motor KV rating, and wheel diameter.

WattQuick

RPM per volt under no load

Typical 29″ ≈ 737 mm · 27.5″ ≈ 700 mm

Theoretical max speed

46.6km/h

~353 RPM at loaded voltage

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About E-Bike Max Speed Calculator

Speed vs voltage

No-load RPM ≈ voltage × KV. Loaded speed is lower due to wind, rolling resistance, and controller limits.

Planning note

Estimates are for planning rides, charging, and battery health—not a substitute for manufacturer specs or professional e-bike service.

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