cfm to gal/h Converter

Convert cfms to gal/hs (cfm to gal/h) instantly with this free online flow-rate converter. Enter any value in the cfm field and get the equivalent in gal/h immediately. This converter handles any quantity — from tiny fractions to large numbers — with full precision. No signup, no ads in the widget, and the conversion runs entirely in your browser for instant results.

The conversion factor is exact: 1 cfm = 448.8321446 gal/h. To convert cfms to gal/hs, multiply your cfm value by 448.8321446. For example, 10 cfm = 4488.321446 gal/h. You can also reverse the calculation: 1 gal/h = 0.002228004416 cfm.

Quick conversion table

cfm (cfm) gal/h (gal/h)
1 cfm 448.8321446 gal/h
5 cfm 2244.160723 gal/h
10 cfm 4488.321446 gal/h
25 cfm 11220.80361 gal/h
50 cfm 22441.60723 gal/h
100 cfm 44883.21446 gal/h

Use the swap button to reverse the direction, or choose a different unit from the dropdown menus to convert within the flow-rate category.

Result
Formula

Formula

cfm to gal/h conversion:
1 cfm = 448.8321446 gal/h
gal/hs = cfms × 448.8321446
1 gal/h = 0.002228004416 cfm
cfms = gal/hs × 0.002228004416

Example

Example: Convert 10 cfm to gal/h: 10 cfm × 448.8321446 = 4488.321446 gal/h So, 10 cfm is about 4488.321446 gal/h. To convert back, multiply by 0.002228004416: 4488.321446 gal/h × 0.002228004416 = 10 cfm.

How to Use

  1. Enter the value you want to convert in the cfm field
  2. The result in gal/h appears instantly below
  3. Use the dropdown menus to change units if needed
  4. Click 'Swap Units' to reverse the conversion direction
  5. Copy the result or adjust the input for a new conversion

Frequently Asked Questions

How do I convert cfms to gal/hs?

Enter the value in cfm (cfm) in the 'From' field. The equivalent in gal/h (gal/h) appears instantly in the 'To' field. The converter uses precise conversion factors and updates in real time as you type.

What is the formula to convert cfm to gal/h?

The conversion factor is shown in the Formula row below the result. For most flow-rate units, the conversion is a simple multiplication or division by a fixed factor. Temperature and fuel economy use special formulas, which are also displayed.

Is this cfm to gal/h converter free?

Yes, completely free with no signup, no limits, and no ads in the converter widget. You can convert as many values as you need. The tool runs entirely in your browser, so your data never leaves your device.

Can I convert gal/hs back to cfms?

Yes. Click the 'Swap Units' button to reverse the direction. You can also use the dropdown menus to select any other flow-rate unit for either field.

How accurate is the cfm to gal/h conversion?

The converter uses high-precision conversion factors (up to 8 decimal places). Results are displayed with up to 6 decimal places, with trailing zeros removed for readability. For scientific or engineering work, always verify with official standards.