Convert US teaspoons to Imperial gallons
1 US teaspoon is 0.001084 gal (UK). One US teaspoon is exactly 0.0010842111779 imperial gallons.
One US teaspoon is 0.0010842112 imperial gallons. To convert US teaspoons to imperial gallons, multiply by 0.0010842112; to go the other way, divide by 0.0010842112 or multiply by 922.32954. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 130. One third of a tablespoon, about 4.93 ml.
Factor checked against the defining standard · How we check
- US teaspoons × 0.0010842112
1 * 0.00108420.001 gal (UK)
1 US teaspoon in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons (as entered) | 1 tsp | — |
| US tablespoons | 0.3333333333 tbsp | × 0.333333333333 |
| US fluid ounces | 0.1666666667 fl oz | × 0.166666666667 |
| US cups | 0.02083333333 cup | × 0.0208333333333 |
| US pints | 0.01041666667 pt | × 0.0104166666667 |
| US quarts | 0.005208333333 qt | × 0.00520833333333 |
| US gallons | 0.001302083333 gal | × 0.00130208333333 |
| milliliters | 4.928921594 ml | × 4.92892159375 |
| liters | 0.004928921594 L | × 0.00492892159375 |
| imperial gallons | 0.001084211178 gal (UK) | × 0.0010842111779 |
| imperial quarts | 0.004336844712 qt (UK) | × 0.00433684471161 |
| imperial pints | 0.008673689423 pt (UK) | × 0.00867368942322 |
| imperial fluid ounces | 0.1734737885 fl oz (UK) | × 0.173473788464 |
| imperial gills | 0.03469475769 gi (UK) | × 0.0346947576929 |
| cubic millimetres | 4,928.921594 mm³ | × 4,928.92159375 |
| cubic centimetres | 4.928921594 cm³ | × 4.92892159375 |
| cubic inches | 0.30078125 in³ | × 0.30078125 |
| cubic feet | 0.0001740632234 ft³ | × 0.00017406322338 |
| cubic yards | 0.000006446786051 yd³ | × 0.0000064467860511 |
| cubic metres | 0.000004928921594 m³ | × 0.00000492892159375 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert US teaspoons to imperial gallons? The converter and the working
- 1.Take the measurement in US teaspoons.
- 2.Multiply by 0.0010842112 — that is how many imperial gallons fit in one US teaspoon.
- 3.To go back the other way, divide by 0.0010842112, or multiply by 922.32954.
Worked example: 25 US teaspoons to imperial gallons
- Formula
- tsp × 0.0010842112 = gal (UK)
- Arithmetic
- 25 × 0.0010842112 = 0.03 gal (UK)
- Answer
- 25 tsp = 0.03 gal (UK)
The factor is rounded for display; the figure above is computed from the full value.
US teaspoons to imperial gallons conversion table
| US teaspoons | Imperial gallons |
|---|---|
| 1 tsp | 0.001084 gal (UK) |
| 2 tsp | 0.002168 gal (UK) |
| 3 tsp | 0.003253 gal (UK) |
| 4 tsp | 0.004337 gal (UK) |
| 5 tsp | 0.01 gal (UK) |
| 6 tsp | 0.01 gal (UK) |
| 7 tsp | 0.01 gal (UK) |
| 8 tsp | 0.01 gal (UK) |
| 9 tsp | 0.01 gal (UK) |
| 10 tsp | 0.01 gal (UK) |
| 12 tsp | 0.01 gal (UK) |
| 15 tsp | 0.02 gal (UK) |
| 20 tsp | 0.02 gal (UK) |
| 25 tsp | 0.03 gal (UK) |
| 50 tsp | 0.05 gal (UK) |
| 100 tsp | 0.11 gal (UK) |
| 200 tsp | 0.22 gal (UK) |
| 300 tsp | 0.33 gal (UK) |
| 500 tsp | 0.54 gal (UK) |
| 1000 tsp | 1.08 gal (UK) |
| 2000 tsp | 2.17 gal (UK) |
| 5000 tsp | 5.42 gal (UK) |
| 10000 tsp | 10.84 gal (UK) |
What is a US teaspoon?
One third of a tablespoon, about 4.93 ml. A metric teaspoon is a round 5 ml, which is why recipes rarely notice the difference.
What is an imperial gallon?
Exactly 4.54609 liters since 1985, and the reason UK and US fuel economy figures cannot be compared: it is 20% larger than the US gallon, so 40 mpg in Britain is about 33 mpg in America on the same car.
How many imperial gallons are in a US teaspoon?
One US teaspoon is 0.0010842112 imperial gallons. Going the other way, one imperial gallon is 922.32954 US teaspoons. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a US teaspoon.
Cite this page
- APA
- Rule Calculator. (2026). Convert US teaspoons to imperial gallons. Rule Calculator. https://rulecalculators.com/convert/teaspoon-to-imperial-gallon
- MLA
- "Convert US teaspoons to imperial gallons." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/teaspoon-to-imperial-gallon.
- Chicago
- Rule Calculator. "Convert US teaspoons to imperial gallons." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/teaspoon-to-imperial-gallon.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many imperial gallons are in a US teaspoon?
- 0.0010842112. Exactly 4.54609 liters since 1985, and the reason UK and US fuel economy figures cannot be compared: it is 20% larger than the US gallon, so 40 mpg in Britain is about 33 mpg in America on the same car.
- How do I convert imperial gallons back to US teaspoons?
- Divide by 0.0010842112, or multiply by 922.32954 — they are the same operation.
Other volume conversions
Imperial gallons to US teaspoons — the same conversion the other way.