Cup (US) to Teaspoon (UK) Converter

Volume Converter

40 units available

Decimals:

From

To

39.968361

1 cup = 39.968361 tsp (UK)

Formula:

tsp (UK) = cup × 39.9683608622

With your value: 1 cup = 39.96836086 tsp (UK)

How big is that?

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

Milk carton (1/2.4e+2 your value)0.00423 cup

Kitchen bucket (1/24 your value)0.0423 cup

Car fuel tank (1/4.7 your value)0.211 cup

Bathtub (1/1.2 your value)0.845 cup

Your value1.00 cup

Hot tub (6.3× your value)6.34 cup

Other Cup (US) to Teaspoon (UK) conversions

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

Cup (US) to Teaspoon (UK) Conversion Table

Cup (US) (cup)	Teaspoon (UK) (tsp (UK))
0.5	19.98418
1	39.968361
2	79.936722
5	199.841804
10	399.683609
15	599.525413
20	799.367217
25	999.209022
50	1,998.418043
100	3,996.836086
250	9,992.090216
500	19,984.180431
1000	39,968.360862

Teaspoon (UK) to Cup (US) Conversion Table

Teaspoon (UK) (tsp (UK))	Cup (US) (cup)
0.5	0.01251
1	0.02502
2	0.05004
5	0.125099
10	0.250198
15	0.375297
20	0.500396
25	0.625495
50	1.25099
100	2.501979
250	6.254948
500	12.509895
1000	25.01979

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.

Cup (US) (cup)

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

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

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

To convert from Cup (US) (cup) to Teaspoon (UK) (tsp (UK)), multiply the value by 39.9683608622.

Formula: tsp (UK) = cup × 39.9683608622

Reverse: cup = tsp (UK) × 0.0250197901

Step-by-Step Example

Start with your value in Cup (US). For example: 5 cup
Multiply by the conversion factor: 5 x 39.9683608622
The result is: 199.841804 tsp (UK)

About Cup (US)

The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.

Common uses: baking, cooking, recipes.

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.

Frequently Asked Questions

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

There are exactly 39.9683608622 Teaspoon (UK) in 1 Cup (US). This means the conversion factor from Cup (US) to Teaspoon (UK) is 39.9683608622.

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

The formula to convert Cup (US) to Teaspoon (UK) is: tsp (UK) = cup × 39.9683608622. For example, to convert 10 Cup (US) to Teaspoon (UK), you would multiply 10 by 39.9683608622.

What is a Cup (US)?