Teaspoons to US Gallons Converter
tsp → gal · 🧪 Volume
1 Teaspoons = 0.0013020835 US Gallons
How to convert Teaspoons to US Gallons
To convert Teaspoons to US Gallons, multiply the value in Teaspoons by 0.0013020835. For example, 5 tsp = 0.0065104176 gal.
The Teaspoons-to-US Gallons conversion comes up often in everyday and professional contexts alike. With 1 tsp equal to 0.0013020835 gal, you can use the tool above for any value, or scan the table below for the most common Teaspoons amounts and their US Gallons equivalents.
Volume conversions are essential in the kitchen, in science, and in any situation involving liquids or capacity. They're also one of the trickiest areas because US and UK (imperial) measurements share names but differ in size.
Understanding Teaspoons and US Gallons
A US gallon (3.785 liters) is noticeably smaller than a UK gallon (4.546 liters) — about 20% less. The same applies to pints, quarts, and fluid ounces. Cups, tablespoons, and teaspoons are the backbone of recipe measurement, while liters and milliliters dominate scientific and most international contexts. This US/UK split is the single biggest source of error in volume conversion.
How accurate is this conversion?
Volume conversions here use the internationally accepted definitions: the US gallon is exactly 3.785411784 liters and the imperial gallon is exactly 4.54609 liters. Always confirm which system a recipe or specification uses before converting.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Teaspoons to US Gallons values
The most frequently searched conversions are 1 Teaspoons = 0.0013020835 US Gallons, 5 Teaspoons = 0.0065104176 US Gallons, 10 Teaspoons = 0.013020835 US Gallons, and 100 Teaspoons = 0.13020835 US Gallons. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: When following a recipe, check the source country first. A British recipe calling for a pint of liquid means 568 mL, while an American pint is only 473 mL — enough difference to affect the result of baking and sauces.
Teaspoons to US Gallons — Conversion Table
| Teaspoons (tsp) | US Gallons (gal) |
|---|---|
| 0.1 tsp | 0.00013020835 gal |
| 0.25 tsp | 0.00032552088 gal |
| 0.5 tsp | 0.00065104176 gal |
| 1 tsp | 0.0013020835 gal |
| 2 tsp | 0.0026041671 gal |
| 5 tsp | 0.0065104176 gal |
| 10 tsp | 0.013020835 gal |
| 25 tsp | 0.032552088 gal |
| 50 tsp | 0.065104176 gal |
| 100 tsp | 0.13020835 gal |
| 250 tsp | 0.32552088 gal |
| 500 tsp | 0.65104176 gal |
| 1000 tsp | 1.3020835 gal |