US teaspoon to US gallon Converter
1 tsp = 0.001302 gal — convert instantly with formula and table.
Use the converter above for an immediate result — it recalculates on every keystroke and works offline once the page has loaded.
Quick answer: one us teaspoon equals 0.001302 US gallons. So to convert US teaspoons to US gallons, multiply by 0.00130208.
How to convert US teaspoons to US gallons
US gallons = US teaspoons × 0.0013020833
The US teaspoon is defined as exactly 4.92892159375 ml — one third of a tablespoon — and anchors small quantities in American recipes.
The US gallon is exactly 3.785411784 liters. American fuel prices are quoted per gallon, making this one of the most practical conversions for travelers.
US teaspoon to US gallon conversion table
| US teaspoon (tsp) | US gallon (gal) |
|---|---|
| 0.01 tsp | 0.00001302 gal |
| 0.1 tsp | 0.00013021 gal |
| 0.25 tsp | 0.00032552 gal |
| 0.4 tsp | 0.00052083 gal |
| 0.75 tsp | 0.00097656 gal |
| 1.25 tsp | 0.001628 gal |
| 1.75 tsp | 0.002279 gal |
| 2.5 tsp | 0.003255 gal |
| 3.5 tsp | 0.004557 gal |
| 4.5 tsp | 0.005859 gal |
| 6 tsp | 0.007813 gal |
| 8 tsp | 0.010417 gal |
| 10 tsp | 0.013021 gal |
| 12 tsp | 0.015625 gal |
| 14 tsp | 0.018229 gal |
| 16 tsp | 0.020833 gal |
| 18 tsp | 0.023437 gal |
| 20 tsp | 0.026042 gal |
| 24 tsp | 0.03125 gal |
| 26 tsp | 0.033854 gal |
| 30 tsp | 0.039063 gal |
| 35 tsp | 0.045573 gal |
| 45 tsp | 0.058594 gal |
| 55 tsp | 0.071615 gal |
| 65 tsp | 0.084635 gal |
| 75 tsp | 0.097656 gal |
| 85 tsp | 0.110677 gal |
| 95 tsp | 0.123698 gal |
| 110 tsp | 0.143229 gal |
| 125 tsp | 0.16276 gal |
| 175 tsp | 0.227865 gal |
| 250 tsp | 0.325521 gal |
| 350 tsp | 0.455729 gal |
| 450 tsp | 0.585938 gal |
| 600 tsp | 0.78125 gal |
| 750 tsp | 0.976563 gal |
| 900 tsp | 1.1719 gal |
| 1,500 tsp | 1.9531 gal |
| 2,500 tsp | 3.2552 gal |
| 10,000 tsp | 13.0208 gal |
Need the opposite direction? Use the US gallon to US teaspoon converter, or read our complete guide to volume conversions for every formula in one place.
Frequently asked questions
How many US gallons are in one us teaspoon?
One us teaspoon equals 0.001302 US gallons. Multiply any us teaspoon value by 0.00130208 to get US gallons.
What is 10 US teaspoons in US gallons?
10 US teaspoons equal 0.013021 US gallons (10 × 0.001302).
Is the us teaspoon to us gallon conversion exact?
The conversion factor used here (0.0013020833) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.