EV POWER

Efficiency Calculator

AIR DENSITY (ρ) 1.225
0.5 kg/m³ 2.0 kg/m³
VELOCITY (v) 27.78
0 m/s (0 km/h) 50 m/s (180 km/h)
DRAG COEFFICIENT (Cd) 0.30
0.15 (sports car) 0.60 (truck)
FRONTAL AREA (A) 2.2
1.5 m² (sports car) 4.5 m² (SUV)
ROLLING RESISTANCE (rr) 0.008
0.005 (low friction) 0.02 (high resistance)
VEHICLE MASS (m) 1800
800 kg (light EV) 4000 kg (heavy truck)
EFFICIENCY
0
miles / kWh
Power: 0 W Speed: 0 mph
mpkWh = (v_mph) / (P_kW) = (v × 2.237) × 1000 / P