100 Gallons to Cubic Feet
100 gal ≈ 13.37 cu ft
100 US gallons is approximately 13.37 cubic feet.
How to convert 100 gal to cu ft
Use the formula cu ft = gal ÷ 7.48051948:
cu ft = 100 ÷ 7.48051948cu ft = 13.368056
So 100 gal = 13.368056 cu ft, or about 13.37 cu ft rounded.
Rounded values and quick estimate
- Rounded to a whole number: 13 cu ft
- Rounded to one decimal place: 13.4 cu ft
- Conversion factor: 1 US gallon = 0.1337 cubic feet
Quick mental estimate: divide by 7.5. For 100 gal that gives about 13.33 cu ft — within 1% of the exact answer. Use the exact formula when precision matters.
100 Gallons in other units
- Cubic feet
- 13.37 cu ft
- Milliliters
- 378541.18 ml
- Liters
- 378.54 L
- Teaspoons
- 76800 tsp
- Tablespoons
- 25600 tbsp
- US fluid ounces
- 12800 fl oz
- US cups
- 1600 cups
- US pints
- 800 pt
- US quarts
- 400 qt
- Cubic centimeters
- 378541.18 cc
- Cubic inches
- 23100 cu in
- Drops
- 7570823.57 drops
- Oil barrels
- 2.38 bbl
- UK gallons
- 83.27 UK gal
- Cubic meters
- 0.3785 m³
- Cubic yards
- 0.4951 cu yd
100 gal and nearby values
| US gallons | Cubic feet |
|---|---|
| 96 gal | 12.83 cu ft |
| 97 gal | 12.97 cu ft |
| 98 gal | 13.1 cu ft |
| 99 gal | 13.23 cu ft |
| 100 gal | 13.37 cu ft |
| 101 gal | 13.5 cu ft |
| 102 gal | 13.64 cu ft |
| 103 gal | 13.77 cu ft |
| 104 gal | 13.9 cu ft |
About us gallons and cubic feet
A US gallon is 128 US fluid ounces, exactly 3.785411784 liters. (The UK imperial gallon is 4.546 liters.)
A cubic foot is 1,728 cubic inches, about 7.48 US gallons or 28.3 liters.
Related conversions
Frequently asked questions
What is 100 Gallons in Cubic Feet?
100 US gallons is about 13.37 cubic feet (100 gal ≈ 13.37 cu ft).
How do you convert 100 gal to cu ft?
Apply cu ft = gal ÷ 7.48051948: cu ft = 100 ÷ 7.48051948, cu ft = 13.368056.
How many US gallons is 13.37 cu ft?
13.37 cu ft is about 100.01 US gallons.