Flow RateGallons per Minute US to Cubic Feet per Minute

Gallons per Minute (US) to Cubic Feet per Minute

Methodology·How We Verify

Snapshot

1 Gallon per Minute (US) equals 0.133681 Cubic Feet per Minute.

Reference basis: This conversion uses a fixed factor based on time-normalized rate definitions.
Example: For 0.1 Gallons per Minute (US), the result equals 0.013368 Cubic Feet per Minute.

Interactive conversion

Converter Calculator

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

0.133681 Cubic Feet per Minute (cfm)

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API and AI agent access

Gallons per Minute (US) to Cubic Feet per Minute.

Machine-readable identifiers

Conversion family: flow-rate
Source unit: gallons_per_minute_us
Target unit: cubic_feet_per_minute

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": "flow-rate",
  "value": 1,
  "from": "gallons_per_minute_us",
  "to": "cubic_feet_per_minute"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "flow-rate",
    "value": 1,
    "from": "gallons_per_minute_us",
    "to": "cubic_feet_per_minute",
    "result": {
      "raw": 0.13368055555555552,
      "display": "0.133681"
    },
    "canonicalPath": "/flow-rate/gallons-per-minute-us-to-cubic-feet-per-minute/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Multiply by 0.13368055555555552 because 1 gpm = 0.06309019639999999 L/s and 1 cfm = 0.47194744320000004 L/s.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Gallon per Minute (US) = 0.133681 Cubic Feet per Minute.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Gallons per Minute (US) (gpm)	Cubic Feet per Minute (cfm)
0.1	0.013368
1/2	0.06684
1	0.133681
5	0.668403
10	1.337
25	3.342
50	6.684
100	13.368
1000	133.681

Questions & answers

Frequently Asked Questions

What is 1 gallon per minute (us) in cubic feet per minute?

1 Gallon per Minute (US) equals 0.133681 Cubic Feet per Minute on this page.

When would I convert gallons per minute (us) to cubic feet per minute?

This route is useful when comparing imperial and HVAC-style flow units such as gallons per minute and cubic feet so specifications stay on the intended unit system.

How do I reverse Gallons per Minute (US) to Cubic Feet per Minute?

Use the mirror Cubic Feet per Minute to Gallons per Minute (US) route; it applies the inverse relationship with the same flow-rate assumptions.