How do I convert gal to ft³?

Use the formula shown above or enter a value to see gal converted to ft³ instantly.

What is the formula for gal to ft³?

The converter calculates ft³ by applying the category-specific conversion factor for Volume.

When should I use gal vs ft³?

gal and ft³ are both part of the Volume category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Volume Converter & Liquid Reference

Convert gal to ft³

Use the live converter below to translate between Gallon (US) (gal) and Cubic Foot (ft³). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

gal → ft³

Gallon (US)

gal

Cubic Foot

0.1337

ft³

Rounded result (4 decimals max)

Formula

1 gal = 0.1337 ft³

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from ft³ to gal.

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gal to ft³ quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Gallon (US) (gal)	Cubic Foot (ft³)
0.25 gal	0.0334 ft³
0.5 gal	0.0668 ft³
1 gal	0.1337 ft³
2 gal	0.2674 ft³
5 gal	0.6684 ft³
10 gal	1.3368 ft³
25 gal	3.342 ft³
100 gal	13.3681 ft³

ft³ back to gal

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Cubic Foot (ft³)	Gallon (US) (gal)
0.25 ft³	1.8701 gal
0.5 ft³	3.7403 gal
1 ft³	7.4805 gal
2 ft³	14.961 gal
5 ft³	37.4026 gal
10 ft³	74.8052 gal
25 ft³	187.013 gal
100 ft³	748.0519 gal

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