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Robot Speed Calculator

Calculate your robot's ground speed from motor RPM and wheel size, with optional physics for load, gradient and rolling resistance.

Motor RPM

Wheel Diameter (mm)

Robot Weight (kg)

Leave blank for kinematic-only

Motor Power (W each)

Number of Motors

1

2

3

4

Wheel Type

Environment

Ground Gradient

0.0°

Estimated Speed

—

No-load max—

Motor load—

Rolling resistance—

Gradient force—

Total resistance—

Speed = RPM × π × diameter ÷ 60

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Robot Runtime Calculator

Estimate how long your robot will run on a charge, or find the battery size needed for a desired runtime.

Estimated Runtime

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Battery capacity—

Usable energy—

Est. battery weight—

—

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Find the right AWG wire gauge for your robot's power wiring based on current draw and safety derating.

Recommended Wire

—

Required current—

Wire rating—

Utilisation—

Cross section—

Resistance—

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