CCF stands for 100 Cubic Feet (the C is the Roman numeral for 100). It is the standard billing unit used by water and natural gas utility companies in the United States. One CCF equals 100 cubic feet of volume.

How many US gallons are in one CCF?

Exactly 748.052 US gallons (1 CCF = 100 ft³; 1 ft³ = 7.48052 US gallons by NIST definition). This is the value used by the CCF to Gallons Converter.

Can I use this converter for natural gas as well as water?

Yes. CCF is the same volume unit whether it refers to water or natural gas. For gas, 1 CCF delivers approximately 1.02 therms of heat energy (≈ 102,800 BTU). Enter the CCF value from your gas bill to see it in gallons, cubic feet, and litres.

Can I convert from gallons back to CCF?

Yes. Enter a volume in US gallons and the CCF to Gallons Converter will calculate the equivalent in CCF, cubic feet, UK gallons, and litres simultaneously.

No. All calculations run entirely in your browser. Nothing is transmitted to a server.

CCF to Gallons Converter

How to Use CCF to Gallons Converter

The CCF to Gallons Converter translates between utility billing volume units in seconds.

Enter the CCF Value — Type the CCF reading from your water or gas bill. The CCF to Gallons Converter instantly shows the equivalent in US gallons, UK gallons, cubic feet, and litres.
Or Enter Gallons — Switch direction to start from a gallon figure (for example, a swimming pool capacity or irrigation volume). The converter calculates CCF and all other units.
Read the Billing Estimate — Enter the rate per CCF from your utility statement to see the approximate cost for the converted volume.
Use the Reference Panel — The quick-reference table shows common household water uses in both gallons and CCF so you can contextualise your bill.

Formula & Theory — CCF to Gallons Converter

The CCF to Gallons Converter uses the exact NIST-defined volume relationships:

1 ft³ = 7.48052 US gallons  (NIST exact)
1 CCF = 100 ft³
1 CCF = 748.052 US gallons

Unit	Equivalent
1 CCF	100 ft³
1 CCF	748.052 US gal
1 CCF	623.116 UK gal
1 CCF	2,831.68 litres
1 US gal	3.78541 litres (exact)

Natural Gas Energy Context

For natural gas, 1 CCF ≈ 1.02 therms ≈ 102,800 BTU. Gas utilities may bill in therms or MCF (thousand cubic feet) depending on the region. One MCF = 10 CCF.

Common Household Uses

Activity	Approx. gallons	Approx. CCF
10-minute shower	20 gal	0.027 CCF
Toilet flush	1.6 gal	0.002 CCF
Dishwasher cycle	4–6 gal	0.007 CCF
Lawn watering (1 hr)	300–600 gal	0.4–0.8 CCF

Use Cases for CCF to Gallons Converter

The CCF to Gallons Converter helps homeowners, businesses, and students make sense of volume billing units:

Utility bill interpretation — Understand and verify your monthly water or gas usage in familiar gallon terms using the CCF to Gallons Converter.
Home water budget planning — Calculate daily or weekly usage in gallons and set conservation targets expressed in CCF to track against your next bill.
Swimming pool volume — Convert pool volume from gallons to CCF to estimate how many billing units it takes to fill the pool from the tap.
Irrigation planning — Convert sprinkler or drip-system flow rates (gal/hr) to CCF/day to match water-use projections against your water allocation or budget.
Natural gas appliance sizing — Convert furnace or water-heater BTU ratings to CCF/hour to predict monthly gas consumption.
Education — The CCF–gallon relationship is an excellent real-world example for teaching volume unit conversions and dimensional analysis.