Teaspoon (UK) to Gallon (US) Converter

Volume Converter

40 units available

Decimals:

From

To

0.001564

1 tsp (UK) = 0.001564 gal

Formula:

gal = tsp (UK) × 0.0015637369

With your value: 1 tsp (UK) = 0.00156374 gal

How big is that?

Everyday references on a logarithmic scale, all expressed in teaspoon (uk) so you can sanity-check the result.

Soda can (1/18 your value)0.0557 tsp (UK)

Milk carton (1/5.9 your value)0.169 tsp (UK)

Your value1.00 tsp (UK)

Kitchen bucket (1.7× your value)1.69 tsp (UK)

Car fuel tank (8.4× your value)8.45 tsp (UK)

Bathtub (34× your value)33.8 tsp (UK)

Other Teaspoon (UK) to Gallon (US) conversions

2 tsp (UK) to gal 3 tsp (UK) to gal 4 tsp (UK) to gal 5 tsp (UK) to gal 6 tsp (UK) to gal 7 tsp (UK) to gal 8 tsp (UK) to gal

Teaspoon (UK) to Gallon (US) Conversion Table

Teaspoon (UK) (tsp (UK))	Gallon (US) (gal)
0.5	0.000782
1	0.001564
2	0.003127
5	0.007819
10	0.015637
15	0.023456
20	0.031275
25	0.039093
50	0.078187
100	0.156374
250	0.390934
500	0.781868
1000	1.563737

Gallon (US) to Teaspoon (UK) Conversion Table

Gallon (US) (gal)	Teaspoon (UK) (tsp (UK))
0.5	319.746887
1	639.493774
2	1,278.987548
5	3,197.468869
10	6,394.937738
15	9,592.406607
20	12,789.875476
25	15,987.344345
50	31,974.68869
100	63,949.37738
250	159,873.443449
500	319,746.886898
1000	639,493.773795

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Teaspoon (UK) (tsp (UK))

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Gallon (US) (gal)

Volume

Exact conversion

The US liquid gallon is exactly 231 cubic inches = 3.785 411 784 L.

Source: NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Teaspoon (UK) to Gallon (US)

To convert from Teaspoon (UK) (tsp (UK)) to Gallon (US) (gal), multiply the value by 0.0015637369.

Formula: gal = tsp (UK) × 0.0015637369

Reverse: tsp (UK) = gal × 639.4937737954

Step-by-Step Example

Start with your value in Teaspoon (UK). For example: 5 tsp (UK)
Multiply by the conversion factor: 5 x 0.0015637369
The result is: 0.007819 gal

About Teaspoon (UK)

The teaspoon (uk) (tsp (UK)) is a unit of volume and capacity. One teaspoon (uk) equals 0.005919388021 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

About Gallon (US)

The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.

Fun Fact: The US gallon is about 20% smaller than the imperial (UK) gallon.

Common uses: fuel (US), beverages, swimming pools.

Frequently Asked Questions

How many Gallon (US) are in 1 Teaspoon (UK)?

There are exactly 0.0015637369 Gallon (US) in 1 Teaspoon (UK). This means the conversion factor from Teaspoon (UK) to Gallon (US) is 0.0015637369.

What is the formula to convert Teaspoon (UK) to Gallon (US)?

The formula to convert Teaspoon (UK) to Gallon (US) is: gal = tsp (UK) × 0.0015637369. For example, to convert 10 Teaspoon (UK) to Gallon (US), you would multiply 10 by 0.0015637369.

What is a Teaspoon (UK)?