1. What is Watts per Mile?

Watts per mile (W/mile) is a unit that measures the energy consumption rate of an electric vehicle. It indicates how many watts of power the vehicle uses to travel one mile, providing a direct measure of energy efficiency.

2. How Does the Conversion Work?

The conversion from kWh per mile to watts per mile is straightforward:

Where:

• 1 kWh = 1000 watt-hours
• Therefore, 1 kWh/mile = 1000 W/mile

Explanation: Since 1 kilowatt equals 1000 watts, we simply multiply the kWh/mile value by 1000 to get W/mile.

3. Importance of Energy Efficiency in EVs

Details: Monitoring energy consumption in W/mile helps EV owners understand their vehicle's efficiency, compare different models, and estimate range and charging costs more accurately.

4. Using the Calculator

Tips: Enter your vehicle's energy consumption in kWh/mile (typically between 0.2-0.5 kWh/mile for efficient EVs). The calculator will instantly convert it to W/mile.

5. Frequently Asked Questions (FAQ)

Q1: What's a good W/mile value for an EV?
A: Most efficient EVs achieve 200-300 W/mile (0.2-0.3 kWh/mile). Values above 350 W/mile indicate lower efficiency.

Q2: How does W/mile relate to range?
A: Lower W/mile means more range from the same battery capacity. For example, a 75 kWh battery at 250 W/mile would provide about 300 miles of range.

Q3: Does driving style affect W/mile?
A: Yes, aggressive acceleration and high speeds can increase W/mile by 20-30% compared to efficient driving.

Q4: How does temperature affect W/mile?
A: Cold weather can increase W/mile by 15-30% due to battery efficiency loss and cabin heating needs.

Q5: Can I convert W/mile back to kWh/mile?
A: Yes, simply divide the W/mile value by 1000 to get kWh/mile.