US Teaspoons to US Gallons
Convert us teaspoons to us gallons instantly. 1 tsp = 0.0013020833 gal. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert us teaspoons to us gallons
To convert us teaspoons to us gallons, divide by 768 (multiply by 0.0013020833). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
gal = tsp × 0.0013020833
US Teaspoons to US Gallons conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| US Teaspoons | US Gallons |
|---|---|
| 1 tsp | 0.001302 gal |
| 2 tsp | 0.002604 gal |
| 3 tsp | 0.003906 gal |
| 5 tsp | 0.00651 gal |
| 10 tsp | 0.013021 gal |
| 20 tsp | 0.026042 gal |
| 25 tsp | 0.032552 gal |
| 50 tsp | 0.065104 gal |
| 100 tsp | 0.130208 gal |
| 500 tsp | 0.651042 gal |
| 1,000 tsp | 1.302083 gal |
What is a us teaspoon?
About 4.93 mL. The smallest standard US kitchen measure.
What is a us gallon?
Exactly 231 cubic inches — smaller than the imperial gallon.
The formula
gal = tsp × 0.0013020833
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the US Teaspoons to US Gallons
- Type the number of us teaspoons you want to convert.
- Read the result in us gallons straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked us gallons to us teaspoons page.
US Teaspoons to US Gallons — frequently asked questions
How many us gallons are in a us teaspoon?
One us teaspoon equals 0.0013020833 gal. gal = tsp × 0.0013020833
What is the formula to convert us teaspoons to us gallons?
The formula is gal = tsp × 0.0013020833. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert us gallons back to us teaspoons?
Divide instead of multiplying: one us gallon is 768 tsp. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this us teaspoons to us gallons free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error