# How to calculate WH/Mile (for the few of you that have ev's!) **URL:** \ **Category:** Do It Yourself (DIY)\ **Created:** [October 24, 2007, 11:18pm UTC](https://community.electricforum.com/t/how-to-calculate-wh-mile-for-the-few-of-you-that-have-evs/432 "2007-10-24T23:18:23Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Lectrol](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lectrol/32/328_2.png) [@Lectrol](https://community.electricforum.com/u/Lectrol)\ **Post date:** [October 24, 2007, 11:18pm UTC](https://community.electricforum.com/t/how-to-calculate-wh-mile-for-the-few-of-you-that-have-evs/432/1 "2007-10-24T23:18:23Z")
This is part of a message i sent to another ev’er: WH/M is the normal way of showing the efficiany of an EV. It is more or less the MPG of an EV. WH/M stands for Watt-hours per mile. A Watt-hour is a measurement of capacity, so a 500 WH/M vehicle will use 500 Watt-hours to go one mile. You can calculate this by finding the WH of your battery pack. This is (Voltage x Amp/hours). You then take this number and divide it by how many miles your ev can go before it is dead. I would recommend finding this milage using a variety of driving conditions. Calculate one on stop and go with heavy traffic, one at highway speeds and one at slower cruising speeds, and or a combination of all three. Here are some examples of what people are getting for efficiancies, and what their setup is. If you see someone with a similar set up to yours, you can calculate how many batteries you will need to get a similar range. [B]Ford Ranger (Production)[/B] 400 WH/Miles, AC, 4,750 lbs, 312V [B]Toyota Rav4 (production)[/B] 250 WH/Miles, DC, 3,500 lbs, 288V [B]Small truck (4wd)[/B] 366 WH/Miles, DC 9", 4,060, 192V [B]Small truck (eff. 2wd)[/B] 300 WH/Miles, AC, 4,880, 312V [B]Medium Sedan[/B] 345 WH/Miles, DC 9", 3,650, 228V [B]Micro car[/B] 133 WH/Miles, DC, 1,750, 120V [B]Small Car[/B] 250 WH/Miles, DC 8", 3,280, 114V [B]Aerodynamic Small car[/B] 180 WH/Miles, DC 9", 2,725, 240V [B]Small SUV[/B] 200 WH/Miles, AC, 1,650, 600V Hope this helps! If anyone calculates their WH/Mile, please post it with other specs here. Thanks! ---
**Author:** ![bennelson](https://avatars.discourse-cdn.com/v4/letter/b/b5ac83/32.png) [@bennelson](https://community.electricforum.com/u/bennelson)\ **Post date:** [December 6, 2007, 8:20pm UTC](https://community.electricforum.com/t/how-to-calculate-wh-mile-for-the-few-of-you-that-have-evs/432/2 "2007-12-06T20:20:35Z")
According to my calculations, my motorcycle gets about 100 WH/Mile. 36 volt system using 3 - 55 Ah batteries. ---
**Author:** ![Baerfoot](https://avatars.discourse-cdn.com/v4/letter/b/ad7895/32.png) [@Baerfoot](https://community.electricforum.com/u/Baerfoot)\ **Post date:** [May 23, 2008, 11:09pm UTC](https://community.electricforum.com/t/how-to-calculate-wh-mile-for-the-few-of-you-that-have-evs/432/3 "2008-05-23T23:09:14Z")
I use a device called a Killawatt to measure how much goes into the batteries. My Metro uses about .26 KWH/mile Here is my log: > **[Metro Log](https://docs.google.com/spreadsheets/d/1uGoNtr7YadFpSuKsAwq1Nn9BWfeZY9DwWaTwonn7sVA/edit?hl=en&hl=en)** > > Sheet1 > > date, Total Miles, Miles on charge, KWhours, KWH/ mile, cost per mile, Note, Conditions, miles to date > 162000+, volt battery has capacity of 16 KW hours > 2/ 10/ 2008, 162152, 9, Metro goes 4 miles/ KWH > 2/ 11/ 2008, 162161, 9, 2. 55, 0....