Convert battery energy in kWh to estimated EV distance in kilometers using kWh/100 km, Wh/km, or km/kWh, or solve for required energy or efficiency.
kWh To km Formula
The following formula estimates distance in kilometers from energy in kWh and consumption in kWh/km.
Variables:
- D is the estimated distance in kilometers (km).
- E is available or consumed energy in kilowatt-hours (kWh), measured on the same basis as C.
- C is average consumption in kWh/km. Divide kWh/100 km by 100, divide Wh/km by 1,000, or take 1 divided by km/kWh to obtain C.
To estimate distance, divide energy E in kWh by consumption C in kWh/km. D is the distance for all of E; only when E = 1 kWh does it give the distance per kilowatt-hour. Divide kWh/100 km by 100 or Wh/km by 1,000 before using this formula.
| Energy (kWh) | Distance (km) |
|---|---|
| 1 | 6.250 |
| 2 | 12.500 |
| 5 | 31.250 |
| 10 | 62.500 |
| 12 | 75.000 |
| 15 | 93.750 |
| 20 | 125.000 |
| 25 | 156.250 |
| 30 | 187.500 |
| 35 | 218.750 |
| 40 | 250.000 |
| 45 | 281.250 |
| 50 | 312.500 |
| 60 | 375.000 |
| 70 | 437.500 |
| 75 | 468.750 |
| 80 | 500.000 |
| 90 | 562.500 |
| 100 | 625.000 |
| 120 | 750.000 |
| * Rounded to 3 decimals. Assumes constant consumption of 160 Wh/km = 0.160 kWh/km = 16 kWh/100 km, equivalent to 6.25 km/kWh. Energy and consumption must use the same measurement basis. These are illustrative distance estimates. | |
What is kWh To km?
A kWh-to-km calculation estimates distance from an amount of energy and a specified consumption rate; energy and distance are different quantities, so there is no universal conversion factor. Distance per energy is expressed in km/kWh. On the same measurement basis, lower kWh/km means higher km/kWh. Actual EV range varies with speed, temperature, terrain, load, and heating or air-conditioning use; leave a suitable trip-planning buffer.
How to Calculate kWh To km?
The following steps outline how to calculate the kWh To km using the formula D = E / C.
- First, determine the available or consumed energy E in kWh and whether it is measured at the battery or the wall.
- Next, use average consumption measured on that same basis and convert it to C in kWh/km.
- Next, use the formula D = E / C to calculate the distance covered in kilometers (D).
- Finally, calculate the kWh To km.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Example available energy E = 120 kWh, with consumption measured on the same energy basis.
energy consumption rate of the vehicle (C) = 10 kWh/100 km = 0.10 kWh/km; D = 120 / 0.10 = 1,200 km at this assumed constant consumption.
