CCF to Gallons Conversion
Enter the CCF value from your water bill to get the exact number of US gallons, or switch direction to convert gallons back to CCF. One CCF equals 100 cubic feet of water, and 1 cubic foot holds about 7.48 US gallons, so 1 CCF converts to 748.05 gallons. You can also see UK (Imperial) gallons, liters, and cubic meters, estimate the dollar cost from a rate per CCF, and view a chart of gallons across a range of CCF amounts.
What is a CCF and where does it appear?
CCF stands for centum cubic feet, from the Latin word for one hundred. One CCF is therefore exactly 100 cubic feet of volume. The unit appears on household water bills throughout the United States and Canada because water utilities meter consumption in cubic feet, and billing in hundreds keeps the numbers on the invoice compact and readable. Natural gas utilities also use CCF (and the related unit MCF, which is 1,000 cubic feet) to measure gas volume at standard pressure. When you see "12 CCF" on your monthly water statement, that means your household used 1,200 cubic feet of water during the billing cycle.
How to convert CCF to gallons
One cubic foot of water contains exactly 7.480519 US liquid gallons, so 1 CCF (100 cubic feet) equals 748.052 US gallons. To convert any CCF value, multiply it by 748.052 for an exact result, or by 748 for the billing-rounded figure that most utilities print on invoices. For UK or Imperial gallons, use 622.883 per CCF instead, because an Imperial gallon is larger (4.546 liters versus 3.785 liters). To go in the other direction, divide gallons by 748.052 (US) or 622.883 (UK) to recover the CCF amount.
Estimating your water bill cost from CCF
Most US water utilities charge a base rate between $2 and $8 per CCF, though tiered systems are common: the first block of CCF each month is cheapest, and the rate climbs once you exceed a usage threshold designed to encourage conservation. To estimate your charge, multiply the number of CCF you used by your tier-1 rate. For a two-tier bill, apply the lower rate to the first block and the higher rate to any usage above it. Sewer fees, fixed service charges, and taxes are added on top of the volumetric water charge, so your final bill will be higher than the pure CCF calculation. This calculator covers the volumetric portion only.
CCF versus cubic meters on international bills
Outside North America, most water utilities bill in cubic meters (m3). One CCF equals 2.832 cubic meters. The conversion is straightforward: multiply CCF by 2.832 to get m3, or divide m3 by 2.832 to get CCF. If you are comparing water usage between a US bill (CCF) and a European bill (m3), dividing the CCF figure by 2.832 gives you the equivalent m3 reading so you can compare on the same scale.
Common CCF to US Gallons conversions
| CCF | Exact US gallons | Billing gallons | Liters | Cubic meters |
|---|---|---|---|---|
| 1 | 748.05 | 748 | 2,831.7 | 2.832 |
| 2 | 1,496.10 | 1,496 | 5,663.4 | 5.663 |
| 5 | 3,740.26 | 3,740 | 14,158.4 | 14.158 |
| 10 | 7,480.52 | 7,481 | 28,316.8 | 28.317 |
| 12 | 8,976.62 | 8,977 | 33,980.2 | 33.980 |
| 15 | 11,220.78 | 11,221 | 42,475.3 | 42.475 |
| 20 | 14,961.04 | 14,961 | 56,633.7 | 56.634 |
| 25 | 18,701.30 | 18,701 | 70,792.1 | 70.792 |
| 30 | 22,441.56 | 22,442 | 84,950.5 | 84.951 |
| 50 | 37,402.60 | 37,403 | 141,584.2 | 141.584 |
| 100 | 74,805.19 | 74,805 | 283,168.5 | 283.168 |
Quick reference for typical household water bill amounts. 1 CCF = 748.052 US gallons (exact); billing rounds to 748.
Frequently asked questions
How many gallons is 1 CCF?
One CCF equals 748.052 US liquid gallons (exact figure) or 748 gallons rounded for billing. If you are working with UK or Imperial gallons, 1 CCF equals 622.883 Imperial gallons, because an Imperial gallon is slightly larger than a US gallon.
What does CCF stand for?
CCF stands for centum cubic feet, where "centum" is Latin for one hundred. So 1 CCF is exactly 100 cubic feet of volume. It is the standard billing unit on most US and Canadian water and gas utility invoices.
Why does my water bill show CCF instead of gallons?
Water meters in the US and Canada typically measure flow in cubic feet. Because the raw cubic-foot numbers get large quickly, utilities group them into hundreds (CCF) for billing. The result is a cleaner, smaller number on your invoice. Some utilities do bill in gallons, but CCF and MCF (thousand cubic feet) are most common in North America.
Is a CCF the same as an HCF?
Yes. HCF stands for hundred cubic feet and is the same unit as CCF (centum cubic feet). Both abbreviations appear on water bills depending on the utility. Numerically they are identical: 1 HCF = 1 CCF = 100 cubic feet.
How do I convert CCF to liters or cubic meters?
Multiply CCF by 2,831.685 to get liters, or by 2.832 to get cubic meters. One cubic foot is 28.317 liters, so 100 cubic feet (1 CCF) gives 2,831.7 liters. This calculator shows liters and cubic meters alongside the gallon result so you can compare across unit systems at a glance.
What is the difference between US gallons and UK gallons?
A US liquid gallon is 3.785 liters, while a UK (Imperial) gallon is 4.546 liters - about 20 percent larger. This means 1 CCF equals 748 US gallons but only 623 UK gallons. US water bills always use US liquid gallons, so if you are reading an American bill you should use the US gallon figure.
How much water is 10 CCF in everyday terms?
10 CCF is about 7,480 US gallons. To put that in context, it is enough water for roughly 440 eight-minute showers (about 17 gallons each), or around 208 full bathtubs (36 gallons each). The average US household uses about 30 CCF of water per month, or 22,000 gallons.