US Gallons to Cubic Feet Converter

Summary

Convert US gallons to cubic feet instantly, with a reverse reference table.

How it works

1. Enter the number of US gallons in the input field.
2. The converter multiplies your value by 0.133681 (the exact gallon-to-ft³ factor).
3. The cubic feet result appears instantly below the input.
4. The reverse table shows common gallon benchmarks alongside their ft³ values.
5. Use the Copy button to grab the result for use elsewhere.

Use cases

• Calculate tank or aquarium capacity in cubic feet from a gallon rating.
• Convert pool or spa volumes for construction and plumbing estimates.
• Convert irrigation or rain-barrel volumes for landscape planning.
• Cross-check fluid volumes when switching between US and imperial units.
• Verify storage-vessel specs in engineering and manufacturing.

Frequently Asked Questions