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
stores sliders + battery size
BATTERY SIZE 75
10 kWh 300 kWh
EFFICIENCY 4.00
0.5 mi/kWh (thirsty) 6.0 mi/kWh (hyperMILE)
LOAD FROM PRESET
ESTIMATED RANGE
300
miles
Kilometers: 483 km Consumption: 250 Wh/mi
Range (mi) = Battery (kWh) × Efficiency (mi/kWh)
NO PRESETS YET Dial in your sliders on the Power tab, hit SAVE PRESET, and your cars will show up here.

Theme is saved in this browser and restored on your next visit.

NO SHARED PRESETS YET Dial in your sliders on the Power tab, hit SAVE PRESET, and your car joins the global list for everyone to see.

CUSTOM DESIGN YOUR BUILD
DRAG COEFFICIENT 0.230 Cd
FRONTAL AREA 2.20 m²
DRAG @ 100 KM/H 0 newtons
POWER TO OVERCOME 0 kW
Cd RANKING — LOWER IS SLICKER

Tuned estimate from shape parameters — not CFD. Gallery Cd values are published figures; frontal areas marked † exceed the calculator's 4.5 m² limit and get clamped. Your design autosaves in this browser.