How do I convert MPG (UK) to kWh/100km?

Use the formula shown above or enter a value to see MPG (UK) converted to kWh/100km instantly.

What is the formula for MPG (UK) to kWh/100km?

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

When should I use MPG (UK) vs kWh/100km?

MPG (UK) and kWh/100km 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 MPG (UK) to kWh/100km

Use the live converter below to translate between Mile per Gallon (UK) (MPG (UK)) and kWh per 100 km (kWh/100km). 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

MPG (UK) → kWh/100km

Mile per Gallon (UK)

MPG (UK)

kWh per 100 km

2,683.5689

kWh/100km

Rounded result (4 decimals max)

Formula

1 MPG (UK) = 2,683.5689 kWh/100km

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/100km to MPG (UK).

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MPG (UK) to kWh/100km quick table

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

Mile per Gallon (UK) (MPG (UK))	kWh per 100 km (kWh/100km)
2 MPG (UK)	1,341.7844 kWh/100km
4 MPG (UK)	670.8922 kWh/100km
6 MPG (UK)	447.2615 kWh/100km
8 MPG (UK)	335.4461 kWh/100km
10 MPG (UK)	268.3569 kWh/100km
15 MPG (UK)	178.9046 kWh/100km
20 MPG (UK)	134.1784 kWh/100km

kWh/100km back to MPG (UK)

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

kWh per 100 km (kWh/100km)	Mile per Gallon (UK) (MPG (UK))
2 kWh/100km	1,341.7844 MPG (UK)
4 kWh/100km	670.8922 MPG (UK)
6 kWh/100km	447.2615 MPG (UK)
8 kWh/100km	335.4461 MPG (UK)
10 kWh/100km	268.3569 MPG (UK)
15 kWh/100km	178.9046 MPG (UK)
20 kWh/100km	134.1784 MPG (UK)