Physics

Power-to-Weight Ratio Calculator

Find power-to-weight ratio.

Calculated Output

Power-to-weight (W/kg) 100

Power-to-weight (hp/tonne) 134.1

Formula: ratio = power ÷ mass

Step-by-Step Breakdown

1. Values used:

2. Power = 150,000 W

3. Mass = 1,500

5. Power-to-weight = Power / Mass = 150,000 / 1,500 = 100W/kg

6. Power-to-weight = 134.1hp/tonne

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The math behind it

ratio = power ÷ mass. Higher means quicker acceleration.

150 kW / 1500 kg → 100 W/kg.

Cars?

Often quoted in hp per tonne or kW per kg.