Live Converter
Convert Liquid Measurement Online
Enter your value above to convert cubic feet to gallons or vice versa.
Real-World Examples
The Uses of Cubic Feet to Gallons Conversion
Knowing a container's physical size in cubic feet is only half the picture; converting that to gallons reveals how much liquid it can actually store.
Calculating Rainwater Tank Capacity
Homeowners who measure a planned rainwater collection tank's dimensions in cubic feet convert that volume into gallons to know exactly how much water the system will store.
Determining Pool Volume from Dimensions
Pool owners who calculate their pool's volume in cubic feet from its length, width, and depth convert the result into gallons to figure out chemical dosing and fill times.
Sizing a Custom Aquarium
Aquarium builders designing a custom tank with known cubic-foot dimensions convert that volume into gallons to determine stocking levels and filtration requirements.
Quick Reference
Comprehensive Conversion Table
Our quick table gives you instant results, so you don't have to calculate these common values manually.
| Conversion | Formula | Result (gal) |
|---|---|---|
| 1 ft³ to gal | 1 × 7.480519480519481 | 7.48 gal |
| 5 ft³ to gal | 5 × 7.480519480519481 | 37.40 gal |
| 10 ft³ to gal | 10 × 7.480519480519481 | 74.81 gal |
| 50 ft³ to gal | 50 × 7.480519480519481 | 374.03 gal |
| 100 ft³ to gal | 100 × 7.480519480519481 | 748.05 gal |
| 500 ft³ to gal | 500 × 7.480519480519481 | 3,740.26 gal |
| 1,000 ft³ to gal | 1,000 × 7.480519480519481 | 7,480.52 gal |
| 5,000 ft³ to gal | 5,000 × 7.480519480519481 | 37,402.60 gal |
| 10,000 ft³ to gal | 10,000 × 7.480519480519481 | 74,805.19 gal |
Got Questions?
Frequently Asked Questions
What's the gallon equivalent of a single cubic foot?
A single cubic foot works out to roughly 7.48 gallons, a ratio that comes up constantly when sizing tanks, aquariums, and water storage containers.
How many gallons are in 10 cubic feet?
10 cubic feet equals approximately 74.81 gallons, useful for quickly estimating a mid-sized tank's water capacity.
Why convert cubic feet to gallons instead of the other way around?
Many containers are designed and measured by their physical dimensions in cubic feet, but their useful capacity, like fill time or stocking level, is better understood in gallons.
Does this calculator use the US gallon specifically?
Yes, it's built around the US liquid gallon (3.785411784 liters). The UK imperial gallon is somewhat larger, so the numbers would shift slightly under that definition.