How to convert US tablespoons to US gallons
gal = tbsp × 0.00390625Because one US gallon equals 256 US tablespoons, you can also divide: gal = tbsp ÷ 256.
An US tablespoon is smaller than an US gallon: it takes 256 US tablespoons to make one US gallon.
Worked examples
- 1 US tablespoon1 tbsp × 0.00390625 = 0.00390625 gal
- 5 US tablespoons5 tbsp × 0.00390625 = 0.01953125 gal
- 10 US tablespoons10 tbsp × 0.00390625 = 0.0390625 gal
- 20 US tablespoons20 tbsp × 0.00390625 = 0.078125 gal
- 100 US tablespoons100 tbsp × 0.00390625 = 0.390625 gal
US tablespoons to US gallons conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| US tablespoons (tbsp) | US gallons (gal) |
|---|---|
| 0.1 tbsp | 0.000390625 gal |
| 0.25 tbsp | 0.0009765625 gal |
| 0.5 tbsp | 0.001953125 gal |
| 1 tbsp | 0.00390625 gal |
| 2 tbsp | 0.0078125 gal |
| 3 tbsp | 0.01171875 gal |
| 4 tbsp | 0.015625 gal |
| 5 tbsp | 0.01953125 gal |
| 6 tbsp | 0.0234375 gal |
| 7 tbsp | 0.02734375 gal |
| 8 tbsp | 0.03125 gal |
| 9 tbsp | 0.03515625 gal |
| 10 tbsp | 0.0390625 gal |
| US tablespoons (tbsp) | US gallons (gal) |
|---|---|
| 12 tbsp | 0.046875 gal |
| 15 tbsp | 0.05859375 gal |
| 20 tbsp | 0.078125 gal |
| 25 tbsp | 0.09765625 gal |
| 30 tbsp | 0.1171875 gal |
| 40 tbsp | 0.15625 gal |
| 50 tbsp | 0.1953125 gal |
| 75 tbsp | 0.29296875 gal |
| 100 tbsp | 0.390625 gal |
| 250 tbsp | 0.9765625 gal |
| 500 tbsp | 1.953125 gal |
| 1,000 tbsp | 3.90625 gal |
About the units
US tablespoon (tbsp)
Half a US fluid ounce: about 14.79 mL. Three teaspoons make a tablespoon. One US tablespoon equals 0.00001478676478 cubic meters (m³).
US gallon (gal)
Defined as 231 cubic inches, exactly 3.785411784 L. US fuel, milk and paint are sold by the gallon. Four quarts or 128 US fluid ounces. One US gallon equals 0.003785411784 cubic meters (m³).
Frequently asked questions
How many US gallons are in one US tablespoon?
There are 0.00390625 US gallons in one US tablespoon, and this value is exact by definition.
How do I convert US tablespoons to US gallons?
Multiply the number of US tablespoons by 0.00390625. For example, 10 tbsp × 0.00390625 = 0.0390625 gal.
How many US tablespoons are in one US gallon?
One US gallon equals 256 US tablespoons. That is the reverse factor, 1 ÷ 0.00390625.
What is 10 US tablespoons in US gallons?
10 tbsp = 0.0390625 gal.
Is this tbsp to gal converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.