15 miles per gallon (mpg) is approximately 6.3776 kilometers per liter (kmpl).
To convert mpg to kmpl, multiply the mpg value by 1.60934 (kilometers in a mile) and then divide by 3.78541 (liters in a gallon). This gives the equivalent fuel efficiency in kmpl, since both mpg and kmpl measure distance per unit volume of fuel but in different units.
Conversion Tool
Result in kmpl:
Conversion Formula
The formula to convert miles per gallon (mpg) to kilometers per liter (kmpl) uses the relation between miles and kilometers, and gallons to liters:
kmpl = (mpg × 1.60934) ÷ 3.78541
This works because 1 mile equals 1.60934 kilometers, and 1 US gallon equals 3.78541 liters. So multiplying mpg by 1.60934 converts miles to kilometers, then dividing by 3.78541 converts gallons to liters, producing km per liter.
Example: Convert 15 mpg to kmpl
- Multiply 15 by 1.60934: 15 × 1.60934 = 24.1401 kilometers
- Divide 24.1401 by 3.78541: 24.1401 ÷ 3.78541 = 6.3776 kmpl
Conversion Example
- Convert 25 mpg to kmpl:
- 25 × 1.60934 = 40.2335 kilometers
- 40.2335 ÷ 3.78541 = 10.6284 kmpl
- Convert 8 mpg to kmpl:
- 8 × 1.60934 = 12.8747 kilometers
- 12.8747 ÷ 3.78541 = 3.4019 kmpl
- Convert 30 mpg to kmpl:
- 30 × 1.60934 = 48.2802 kilometers
- 48.2802 ÷ 3.78541 = 12.7552 kmpl
- Convert 12 mpg to kmpl:
- 12 × 1.60934 = 19.3121 kilometers
- 19.3121 ÷ 3.78541 = 5.1029 kmpl
Conversion Chart
| mpg | kmpl |
|---|---|
| -10.0 | -4.2549 |
| -5.0 | -2.1274 |
| 0.0 | 0.0000 |
| 5.0 | 2.1274 |
| 10.0 | 4.2549 |
| 15.0 | 6.3823 |
| 20.0 | 8.5097 |
| 25.0 | 10.6372 |
| 30.0 | 12.7646 |
| 35.0 | 14.8921 |
| 40.0 | 17.0195 |
To use the chart, find the mpg value in the left column and read across to find the equivalent kmpl value. Negative values indicates reverse or invalid fuel efficiency, usually not practical but shown for math completeness.
Related Conversion Questions
- How many kilometers per liter is equal to 15 mpg?
- What is the equivalent of 15 mpg in kmpl for a car?
- Can 15 miles per gallon be converted into kilometers per liter?
- Is 15 mpg more efficient than 6 kmpl?
- How to convert 15 mpg fuel consumption to kmpl?
- What does 15 mpg translate to in km per liter?
- How does 15 mpg compare with kmpl values?
Conversion Definitions
mpg (Miles per Gallon): A unit measuring fuel efficiency of vehicles, indicating how many miles a vehicle can travel using one US gallon of fuel. It combines distance in miles and volume in gallons, commonly used in the United States and some other countries for road vehicle fuel consumption.
kmpl (Kilometers per Liter): A measure of fuel efficiency showing how many kilometers a vehicle can go with one liter of fuel. This unit is widely used in countries that use the metric system, reflecting distance traveled per unit volume of fuel consumed.
Conversion FAQs
Why does converting mpg to kmpl involve both multiplication and division?
The conversion must account for different units of length and volume. Miles convert to kilometers by multiplying by 1.60934, while gallons convert to liters by dividing by 3.78541. Both changes are necessary to translate mpg into kmpl properly, which measures distance per liter instead of gallon.
Can I use the same formula for UK gallons?
No, UK gallons are larger than US gallons (1 UK gallon = 4.54609 liters). Using the US gallon conversion formula with a UK gallon value would result in incorrect kmpl. You would need to adjust the formula using the appropriate gallon-to-liter conversion for UK gallons.
Is a higher kmpl always better than a higher mpg?
Not always, because they measure the same efficiency but in different units. A higher value in either system means better fuel economy. However, comparing raw numbers without converting can mislead, since 15 mpg is not the same as 15 kmpl.
Why do some mpg to kmpl conversions show slight differences?
Differences can arise from rounding constants or using approximate values for miles to kilometers and gallons to liters. Precision in constants like 1.60934 and 3.78541 affects final results, causing small variations depending on the decimal places used.
Is it valid to have negative mpg or kmpl values in calculations?
Negative values in mpg or kmpl don’t represent real-world fuel efficiency but can appear in mathematical operations or error data. Fuel efficiency can’t be negative, so such results should be interpreted carefully and likely indicate data or input errors.