How to Convert US gallons to Teaspoons (gal to tsp)
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres. This guide shows how to convert us gallons into teaspoons by hand, with examples and a quick-reference table.
The conversion
To convert us gallons to teaspoons, multiply the value by 767.9998863848. To go the other way, divide by the same number (or multiply by 0.0013020835). For a quick estimate, multiply by about 770.
Teaspoons = us gallons × 767.9998863848
Worked examples
- 3 gal = 2,304 tsp
- 12.5 gal = 9,600 tsp
- 75 gal = 57,599.99 tsp
US gallons to Teaspoons table
| US gallons | Teaspoons |
|---|---|
| 1 gal | 767.9999 tsp |
| 2 gal | 1,536 tsp |
| 5 gal | 3,840 tsp |
| 10 gal | 7,680 tsp |
| 20 gal | 15,360 tsp |
| 25 gal | 19,200 tsp |
| 50 gal | 38,399.99 tsp |
| 100 gal | 76,799.99 tsp |
| 250 gal | 191,999.97 tsp |
| 500 gal | 383,999.94 tsp |
| 1,000 gal | 767,999.89 tsp |
Common questions
Is gal to tsp exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Teaspoons to US gallons converter.
Mistakes to avoid
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
For any value, use the US gallons to Teaspoons Converter or browse all volume converters.
Run your own numbers: US gallons to Teaspoons Converter