US tablespoon to US gallon Converter
Type a value — the answer appears instantly. 1 tbsp = 0.00390625 gal.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
0.00390625 US gallons
= 0.0147868 L= 14.7868 ml
equals 0.00390625 US gallonsFormula: gal = tbsp × 0.00390625
US tablespoon to US gallon formula
gal = tbsp × 0.00390625
Convert 5 US tablespoons to US gallons
- Start with 5 US tablespoons.
- Multiply by the conversion factor: 5 × 0.00390625 = 0.0195313.
- So 5 tbsp = 0.0195313 gal.
US tablespoon to US gallon conversion table
| US tablespoons (tbsp) | US gallons (gal) |
|---|---|
| 0.01 tbsp | 0.0000390625 gal |
| 0.1 tbsp | 0.000390625 gal |
| 0.25 tbsp | 0.000976563 gal |
| 0.5 tbsp | 0.00195313 gal |
| 1 tbsp | 0.00390625 gal |
| 2 tbsp | 0.0078125 gal |
| 3 tbsp | 0.0117188 gal |
| 4 tbsp | 0.015625 gal |
| 5 tbsp | 0.0195313 gal |
| 6 tbsp | 0.0234375 gal |
| 7 tbsp | 0.0273438 gal |
| 8 tbsp | 0.03125 gal |
| 9 tbsp | 0.0351563 gal |
| 10 tbsp | 0.0390625 gal |
| 15 tbsp | 0.0585938 gal |
| 20 tbsp | 0.078125 gal |
| 25 tbsp | 0.0976563 gal |
| 30 tbsp | 0.117188 gal |
| 40 tbsp | 0.15625 gal |
| 50 tbsp | 0.195313 gal |
| 75 tbsp | 0.292969 gal |
| 100 tbsp | 0.390625 gal |
| 250 tbsp | 0.976563 gal |
| 500 tbsp | 1.95313 gal |
| 1,000 tbsp | 3.90625 gal |
| 5,000 tbsp | 19.5313 gal |
| 10,000 tbsp | 39.0625 gal |
Unit definitions
What is a US tablespoon?
The US tablespoon is a customary cooking measure of half a US fluid ounce, about 14.79 millilitres. It equals three teaspoons, and sixteen tablespoons make one cup. It is common in American recipes.
What is a US gallon?
The US gallon is defined as exactly 231 cubic inches, or 3.785411784 litres. It is the standard unit for fuel, milk, and large liquid quantities in the United States. It is about 20% smaller than the imperial gallon.
Frequently asked questions
How many US gallons are in one US tablespoon?
One US tablespoon equals 0.00390625 US gallons (1 tbsp = 0.00390625 gal).
How do I convert US tablespoons to US gallons?
Multiply the value in US tablespoons by 0.00390625. For example, 10 tbsp × 0.00390625 = 0.0390625 gal.
Which is bigger — a US tablespoon or a US gallon?
A US gallon is bigger: one US gallon contains 256 US tablespoons.
Is this US tablespoon to US gallon converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.