How many teaspoons are in 1 cup?

There are exactly 48 teaspoons in 1 US cup. This is a fixed ratio in the US customary system (1 cup = 16 tablespoons, 1 tablespoon = 3 teaspoons, so 16 × 3 = 48).

How many teaspoons are in 1/4 cup?

1/4 cup equals 12 teaspoons (48 ÷ 4 = 12). Similarly, 1/2 cup = 24 tsp and 3/4 cup = 36 tsp.

How many teaspoons are in 1/3 cup?

1/3 cup equals 16 teaspoons (48 ÷ 3 = 16). And 2/3 cup equals 32 teaspoons.

Does this use US cups or metric cups?

This converter uses US customary cups (236.6 mL). An Australian metric cup is 250 mL, and an imperial cup (UK) is about 284 mL — those would give slightly different teaspoon counts.

Can I enter fractions like 1 1/2 cups?

Yes. You can type mixed numbers like "1 1/2", simple fractions like "3/4", or decimals like "1.5". The converter parses all common formats.

Cups to Teaspoons Converter

Convert cups to teaspoons instantly — 1 cup equals 48 teaspoons, with support for fractions like 1/4 or 1/3.

Enter Cup Amount

Cups

Common amounts

Result

Enter a cup amount to see the conversion.

Cups to Teaspoons Reference Table

Cups	Teaspoons	Tablespoons	Fl oz
⅛ cup	6	2	1
¼ cup	12	4	2
⅓ cup	16	5.33	2.67
½ cup	24	8	4
⅔ cup	32	10.67	5.33
¾ cup	36	12	6
1 cup	48	16	8
1½ cups	72	24	12
2 cups	96	32	16
3 cups	144	48	24
4 cups	192	64	32

Summary

This converter calculates how many teaspoons are in any cup measurement. One cup equals exactly 48 teaspoons in the US customary system. It handles whole numbers, decimals, and common cooking fractions like 1/4, 1/3, 2/3, and 3/4 cup.

How it works

Enter a cup value — whole number, decimal, or fraction like 1/4.
The converter multiplies by 48 (the number of teaspoons in one cup).
The result displays in teaspoons, rounded to two decimal places.
Common cooking fractions are shown as quick-pick buttons for convenience.
Tablespoon and fluid ounce equivalents are displayed alongside the teaspoon result.

Use cases

Scale up or down a recipe that lists measurements in cups.
Convert a cup-based ingredient amount when only a teaspoon measure is handy.
Check how many teaspoons of liquid are in 1/3 or 2/3 cup.
Confirm kitchen measurement equivalents while meal prepping.
Teach kids or students how US cooking measurements relate to one another.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu