Convert tablespoons to US gallons
1 tbsp = 0.00390625 gal. Change the amount below, or read the formula and the reference table further down.
1 tablespoon equals
US gallons
1 tbsp = 0.00390625 gal
The formula
Tablespoons and US gallons both measure volume from the same zero, so a single multiplier does the job.
gal = tbsp × 0.00390625
Going the other way? Convert US gallons to tablespoons.
Tablespoons to US gallons table
Common values, rounded for reading.
| Tablespoons (tbsp) | US gallons (gal) |
|---|---|
| 1 | 0.003906 |
| 2 | 0.007813 |
| 3 | 0.011719 |
| 4 | 0.015625 |
| 5 | 0.019531 |
| 6 | 0.023437 |
| 7 | 0.027344 |
| 8 | 0.03125 |
| 9 | 0.035156 |
| 10 | 0.039063 |
| 15 | 0.058594 |
| 20 | 0.078125 |
| 25 | 0.097656 |
| 30 | 0.117188 |
| 40 | 0.15625 |
| 50 | 0.195313 |
| 75 | 0.292969 |
| 100 | 0.390625 |
| 250 | 0.976563 |
| 500 | 1.9531 |
| 1,000 | 3.9063 |
Questions people ask
- How many US gallons are in a tablespoon?
- One tablespoon equals 0.00390625 US gallons.
- How do I convert tablespoons to US gallons by hand?
- Multiply the number of tablespoons by 0.00390625. For a rough check, 0.004 is close enough for most everyday use.
- What is 1 tablespoon in US gallons?
- 1 tablespoon is 0.00390625 US gallons.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.