How do I convert Wh/km to kWh/100mi?

Use the formula shown above or enter a value to see Wh/km converted to kWh/100mi instantly.

What is the formula for Wh/km to kWh/100mi?

The converter calculates kWh/100mi by applying the category-specific conversion factor for Fuel Economy.

When should I use Wh/km vs kWh/100mi?

Wh/km and kWh/100mi are both part of the Fuel Economy category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Fuel Economy & Efficiency Reference

Convert Wh/km to kWh/100mi

Use the live converter below to translate between Watt-hour per kilometer (Wh/km) and kWh per 100 miles (kWh/100mi). Scroll further for quick examples, formula tips, and related units.

Formula insight: Converting between efficiency (km/L, MPG) and consumption (L/100km) units requires using the inverse relationship: consumption = 100 ÷ efficiency.

Convert

Wh/km → kWh/100mi

Watt-hour per kilometer

Wh/km

kWh per 100 miles

0.0621

kWh/100mi

Rounded result (4 decimals max)

Formula

1 Wh/km = 0.0621 kWh/100mi

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table
Fuel Economy Guide (Model Year 2024)
U.S. Environmental Protection Agency & U.S. Department of Energy. Describes how MPG, km/L, and L/100 km ratings are calculated for the U.S. Monroney label and how to interpret efficiency versus consumption metrics. View source
Alternative Fuels Data Center: Fuel Properties Comparison
U.S. Department of Energy. Lists gasoline lower heating value (about 32 MJ/gal, which is roughly 9.5 kWh per liter), letting the app convert between liquid-fuel efficiency (km/L) and EV metrics (km/kWh, kWh/100 km, Wh/km). View source

Results update as you type. Swap the direction to convert back from kWh/100mi to Wh/km.

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Wh/km to kWh/100mi quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Watt-hour per kilometer (Wh/km)	kWh per 100 miles (kWh/100mi)
2 Wh/km	0.1243 kWh/100mi
4 Wh/km	0.2485 kWh/100mi
6 Wh/km	0.3728 kWh/100mi
8 Wh/km	0.4971 kWh/100mi
10 Wh/km	0.6214 kWh/100mi
15 Wh/km	0.9321 kWh/100mi
20 Wh/km	1.2427 kWh/100mi

kWh/100mi back to Wh/km

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

kWh per 100 miles (kWh/100mi)	Watt-hour per kilometer (Wh/km)
2 kWh/100mi	32.1869 Wh/km
4 kWh/100mi	64.3738 Wh/km
6 kWh/100mi	96.5606 Wh/km
8 kWh/100mi	128.7475 Wh/km
10 kWh/100mi	160.9344 Wh/km
15 kWh/100mi	241.4016 Wh/km
20 kWh/100mi	321.8688 Wh/km