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US Teaspoons to US Cups (tsp to cup) Converter

1 US teaspoon (tsp) = 0.0208333 US cups (cup). To convert US teaspoons to US cups, multiply by 0.0208333: 1 tsp × 0.0208333 = 0.0208333 cup.

1 tsp = 0.0208333334 cup
Convert the other way: US Cups to US Teaspoons

Quick facts

How to convert US teaspoons to US cups

  1. Take the value in US teaspoons.
  2. Multiply it by 0.0208333 (the number of US cups in one US teaspoon).
  3. Round the result to the precision you need.
cup = tsp × 0.0208333

Worked example (a recipe): 1 tsp × 0.0208333 = 0.0208333 cup.

To convert US cups back to US teaspoons, multiply by 48, or divide by 0.0208333.

Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).

US Teaspoons to US Cups conversion table

US Teaspoons to US Cups conversion table
US Teaspoons [tsp]US Cups [cup]
0.01 tsp0.0002083333 cup
0.1 tsp0.0020833333 cup
1 tsp0.0208333334 cup
2 tsp0.0416666667 cup
3 tsp0.0625000001 cup
5 tsp0.1041666668 cup
10 tsp0.2083333336 cup
20 tsp0.4166666672 cup
50 tsp1.041666668 cup
100 tsp2.083333336 cup
1000 tsp20.8333333598 cup

tsp to cup chart from 1 to 100

US Cups to US Teaspoons conversion table

US Cups to US Teaspoons conversion table
US Cups [cup]US Teaspoons [tsp]
0.01 cup0.4799999994 tsp
0.1 cup4.7999999939 tsp
1 cup47.9999999391 tsp
2 cup95.9999998783 tsp
3 cup143.9999998174 tsp
5 cup239.9999996957 tsp
10 cup479.9999993913 tsp
20 cup959.9999987827 tsp
50 cup2399.9999969567 tsp
100 cup4799.9999939135 tsp
1000 cup47999.9999391348 tsp

US Teaspoons vs US Cups

US TeaspoonUS Cup
Symboltspcup
Equals1 tsp = 0.0208333 cup1 cup = 48 tsp

What is a US teaspoon?

A US customary cooking measure equal to 1/3 tablespoon. Used in US recipes for small quantities of ingredients.

What is a US cup?

A US customary cooking measure equal to 8 fluid ounces. The standard recipe measure for liquids and dry ingredients in the US.

Frequently asked questions

How many US cups are in a US teaspoon?

There are 0.0208333 US cups in 1 US teaspoon (1 tsp = 0.0208333334 cup).

How many US teaspoons are in a US cup?

There are 48 US teaspoons in 1 US cup (1 cup = 47.9999999391 tsp).

How do I convert US teaspoons to US cups?

Multiply the number of US teaspoons by 0.0208333. For example, 10 tsp × 0.0208333 = 0.208333 cup. To convert back, multiply by 48.

What is 10 tsp in US cups?

10 tsp = 0.208333 cup.

What is 100 tsp in US cups?

100 tsp = 2.08333 cup.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026