Fuel Economy Converter
Fuel economy describes how far a vehicle travels on a given amount of fuel. Distance-per-fuel measures like miles per gallon and kilometers per liter go up as efficiency improves, while fuel-per-distance measures like liters per 100 km go down. Because of that, L/100 km is the reciprocal of the others. US and Imperial gallons differ, so US and UK MPG are separate.
37 units supported Base unit kilometer per liter (km/L)
Mile per Gallon (US) and Liter per 100 km are related through the category's base unit. Distance-per-fuel and fuel-per-distance measures are reciprocals, so the calculation inverts the value where needed. How this is calculated
About fuel economy conversion
Fuel Economy conversion is commonly needed when comparing vehicle efficiency across countries. Distance-per-fuel and fuel-per-distance measures move in opposite directions, so a higher MPG matches a lower L/100 km.
Popular conversions
Convert Mile per Gallon (US) to other fuel economy units
1 mpg (US) expressed in every other fuel economy unit on this site.
- Kilometer per Liter km/L 0.42514371
- Meter per Liter m/L 425.14371
- Kilometer per Gallon (US) km/gal (US) 1.609344
- Mile per Liter mi/L 0.26417205
- Mile per Gallon (US) mpg (US) 1
- Mile per Gallon (UK) mpg (UK) 1.2009499
- Nautical Mile per Liter nmi/L 0.22955924
- Nautical Mile per Gallon (US) nmi/gal (US) 0.86897624
- Centimeter per Liter cm/L 42,514.371
- Dekameter per Liter dam/L 42.514371
- Hectometer per Liter hm/L 4.2514371
- Megameter per Liter Mm/L 0.00042514371
- Gigameter per Liter Gm/L 4.2514371e-7
- Terameter per Liter Tm/L 4.2514371e-10
- Petameter per Liter Pm/L 4.2514371e-13
- Exameter per Liter Em/L 4.2514371e-16
- Meter per Gallon (US) m/gal (US) 1,609.344
- Meter per Gallon (UK) m/gal (UK) 1,932.7416
- Meter per Quart (US) m/qt (US) 402.336
- Meter per Quart (UK) m/qt (UK) 483.18539
- Meter per Pint (US) m/pt (US) 201.168
- Meter per Pint (UK) m/pt (UK) 241.59269
- Meter per Cup (US) m/cup (US) 100.584
- Meter per Cup (UK) m/cup (UK) 120.79635
- Meter per Fluid Ounce (US) m/fl oz (US) 12.573
- Meter per Fluid Ounce (UK) m/fl oz (UK) 12.079635
- Meter per Cubic Meter m/m³ 425,143.71
- Meter per Cubic Yard m/yd³ 325,045.69
- Meter per Cubic Foot m/ft³ 12,038.729
- Meter per Cubic Inch m/in³ 6.9668571
- Liter per 100 km L/100km 235.21458
- Liter per Kilometer L/km 2.3521458
- Liter per 10 km L/10km 23.521458
- Gallon (US) per 100 mi gal/100mi (US) 100
- Gallon (US) per Mile gal/mi (US) 1
- Gallon (UK) per 100 mi gal/100mi (UK) 83.267418
- Gallon (UK) per Mile gal/mi (UK) 0.83267418
Complete list of fuel economy units
All 37 units this converter supports, each stated against the kilometer per liter (km/L).
| Unit | Symbol | System | In kilometers per liter | Conversions |
|---|---|---|---|---|
| Kilometer per Liter | km/L | Metric | base unit (km/L) | — |
| Meter per Liter | m/L | Metric | 1 m/L = 0.001 km/L | — |
| Kilometer per Gallon (US) | km/gal (US) | US | 1 km/gal (US) = 0.264172052358 km/L | — |
| Mile per Liter | mi/L | Other | 1 mi/L = 1.609344 km/L | — |
| Mile per Gallon (US) | mpg (US) | US | 1 mpg (US) = 0.42514370743 km/L | mpg to l/100km |
| Mile per Gallon (UK) | mpg (UK) | Imperial | 1 mpg (UK) = 0.354006189935 km/L | uk mpg to l/100km |
| Nautical Mile per Liter | nmi/L | Other | 1 nmi/L = 1.852 km/L | — |
| Nautical Mile per Gallon (US) | nmi/gal (US) | US | 1 nmi/gal (US) = 0.489246640967 km/L | — |
| Centimeter per Liter | cm/L | Metric | 1 cm/L = 0.00001 km/L | — |
| Dekameter per Liter | dam/L | Metric | 1 dam/L = 0.01 km/L | — |
| Hectometer per Liter | hm/L | Metric | 1 hm/L = 0.1 km/L | — |
| Megameter per Liter | Mm/L | Metric | 1 Mm/L = 1,000 km/L | — |
| Gigameter per Liter | Gm/L | Metric | 1 Gm/L = 1,000,000 km/L | — |
| Terameter per Liter | Tm/L | Metric | 1 Tm/L = 1,000,000,000 km/L | — |
| Petameter per Liter | Pm/L | Metric | 1 Pm/L = 1,000,000,000,000 km/L | — |
| Exameter per Liter | Em/L | Metric | 1 Em/L = 1e+15 km/L | — |
| Meter per Gallon (US) | m/gal (US) | US | 1 m/gal (US) = 0.000264172052358 km/L | — |
| Meter per Gallon (UK) | m/gal (UK) | Imperial | 1 m/gal (UK) = 0.000219969248299 km/L | — |
| Meter per Quart (US) | m/qt (US) | US | 1 m/qt (US) = 0.00105668820943 km/L | — |
| Meter per Quart (UK) | m/qt (UK) | Imperial | 1 m/qt (UK) = 0.000879876993196 km/L | — |
| Meter per Pint (US) | m/pt (US) | US | 1 m/pt (US) = 0.00211337641887 km/L | — |
| Meter per Pint (UK) | m/pt (UK) | Imperial | 1 m/pt (UK) = 0.00175975398639 km/L | — |
| Meter per Cup (US) | m/cup (US) | US | 1 m/cup (US) = 0.00422675283773 km/L | — |
| Meter per Cup (UK) | m/cup (UK) | Imperial | 1 m/cup (UK) = 0.00351950797279 km/L | — |
| Meter per Fluid Ounce (US) | m/fl oz (US) | US | 1 m/fl oz (US) = 0.0338140227018 km/L | — |
| Meter per Fluid Ounce (UK) | m/fl oz (UK) | Imperial | 1 m/fl oz (UK) = 0.0351950797279 km/L | — |
| Meter per Cubic Meter | m/m³ | SI | 1 m/m³ = 0.000001 km/L | — |
| Meter per Cubic Yard | m/yd³ | Imperial | 1 m/yd³ = 0.00000130795061931 km/L | — |
| Meter per Cubic Foot | m/ft³ | Imperial | 1 m/ft³ = 0.0000353146667215 km/L | — |
| Meter per Cubic Inch | m/in³ | Imperial | 1 m/in³ = 0.0610237440947 km/L | — |
| Liter per 100 km | L/100km | Metric | 1 L/100km = 100 km/L (non-linear scale) | l/100km to mpgl/100km to uk mpg |
| Liter per Kilometer | L/km | Metric | 1 L/km = 1 km/L (non-linear scale) | — |
| Liter per 10 km | L/10km | Metric | 1 L/10km = 10 km/L (non-linear scale) | — |
| Gallon (US) per 100 mi | gal/100mi (US) | US | 1 gal/100mi (US) = 42.514371 km/L (non-linear scale) | — |
| Gallon (US) per Mile | gal/mi (US) | US | 1 gal/mi (US) = 0.42514371 km/L (non-linear scale) | — |
| Gallon (UK) per 100 mi | gal/100mi (UK) | Imperial | 1 gal/100mi (UK) = 35.400619 km/L (non-linear scale) | — |
| Gallon (UK) per Mile | gal/mi (UK) | Imperial | 1 gal/mi (UK) = 0.35400619 km/L (non-linear scale) | — |
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Frequently asked questions
What is the base unit for fuel economy?
Fuel Economy conversions on this site are calculated against the kilometer per liter (km/L).
Which fuel economy units can I convert?
You can convert between 37 units, including kilometer per liter, meter per liter, kilometer per gallon (us), mile per liter, and more.
Where is fuel economy conversion useful?
It is commonly needed when comparing vehicle efficiency across countries.
Does this converter mix measurement systems?
The converter supports Metric, US, Other, Imperial, SI units and keeps their exact definitions separate so results stay accurate.
Related categories
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.