Fuel EconomyLiters per 100 Miles to Miles per US Gallon

Liters per 100 Miles to Miles per US Gallon

Methodology·How We Verify

Snapshot

1 Liters per 100 Miles equals 378.541178 Miles per US Gallon.

Reference basis: This conversion uses a fixed factor based on reference unit definitions.
Example: For 3 Liters per 100 Miles, the result equals 126.180393 Miles per US Gallon.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

378.541178 Miles per US Gallon (mpg (US))

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API and AI agent access

Liters per 100 Miles to Miles per US Gallon.

Machine-readable identifiers

Conversion family: fuel-economy
Source unit: liters_per_100_miles
Target unit: miles_per_us_gallon

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "fuel-economy",
  "value": 1,
  "from": "liters_per_100_miles",
  "to": "miles_per_us_gallon"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "fuel-economy",
    "value": 1,
    "from": "liters_per_100_miles",
    "to": "miles_per_us_gallon",
    "result": {
      "raw": 378.541177864,
      "display": "378.541178"
    },
    "canonicalPath": "/fuel-economy/liters-per-100-miles-to-miles-per-us-gallon/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

The converter converts liters per 100 miles into miles per us gallon by normalizing the input through liters per 100 kilometers, then restating the result in the target fuel-economy format. Because one side measures consumption and the other measures efficiency, the numeric behavior is inverse even though the route stays on one fixed shared basis. The calculator, common values, and mirror Miles per US Gallon to Liters per 100 Miles page all use that same model.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Liters per 100 Miles = 378.541178 Miles per US Gallon.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Liters per 100 Miles (L/100mi)	Miles per US Gallon (mpg (US))
3	126.180393
4	94.635294
5	75.708236
6	63.090196
7 1/2	50.472157
10	37.854118
12 1/2	30.283294
15	25.236079
20	18.927059
30	12.618039

Questions & answers

Frequently Asked Questions

How is L/100mi to mpg (US) calculated?

This page converts through liters per 100 kilometers, which keeps consumption-format and efficiency-format fuel economy units on one fixed shared basis even though their numeric behavior is inverse.

Why do consumption and efficiency values move in opposite directions?

Consumption units measure fuel used per distance, while efficiency units measure distance per fuel amount. That is why improving efficiency lowers one number while raising the other.