Convert between CCF (hundred cubic feet) and US gallons. Essential for water billing, utility calculations, and volume measurements. Most residential water bills use CCF, while daily usage is easier to understand in gallons.
Last updated: March 2026 | By Patchworkr Team
| CCF | US Gallons |
|---|---|
| 0.5 | 374.026 |
| 1 | 748.052 |
| 2 | 1496.104 |
| 5 | 3740.2595 |
| 10 | 7480.519 |
| 20 | 14961.038 |
| 50 | 37402.595 |
| 100 | 74805.19 |
CCF stands for centum cubic feet, meaning 100 cubic feet of water. It’s commonly used by utility companies in the United States to measure water usage. 1 cubic foot of water = 7.48052 gallons, which is where the full CCF conversion comes from.
A gallon is a more familiar unit for everyday use. In water measurement:
Because CCF values can feel abstract, converting to gallons makes it much easier to understand water usage in real terms.
Example: A household using 10 CCF in a month has used about 7,480 gallons of water.
Multiply by 748.0519:
Example: 12 CCF = 12 × 748.0519 = 8,976.62 gallons
Divide by 748.0519:
Example: 5,000 gallons = 5,000 ÷ 748.0519 ≈ 6.68 CCF
Quick check: dividing gallons by ~750 should get you close to CCF.
Understanding Your Water Bill
≈ 840 gallons/day over 30 days.
1 CCF equals 748.0519 gallons.
CCF is easier for utilities to measure large volumes, while gallons are easier for people to understand.
100 CCF equals about 74,805 gallons.
Not commonly. Most countries use cubic meters instead.
Yes. Multiply CCF by ~750 for a fast approximation.
It comes from converting cubic feet to gallons exactly (1 cubic foot = 7.48052 gallons × 100).
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