Cups to Teaspoons Converter
Enter the volume in cups below to convert it to teaspoons.
Convert Cups (US) to Teaspoons (US)
Enter a value in cups (us) (cup) to convert to teaspoons (us) (tsp).
Cup to Teaspoon Conversion Table
Table showing various cup measurements converted to teaspoons. Click any preset value or arrow to load it into the converter.
How to Convert Cups to Teaspoons
To convert cups to teaspoons, multiply the volume by the following conversion ratio: 48 teaspoons/cup.
Since one cup is equal to 48 teaspoons, you can use this simple formula to convert:
The volume in teaspoons is equal to the volume in cups multiplied by 48.
For example, here's how to convert 5 cups to teaspoons using the formula above.
How Many Teaspoons Are in a Cup?
There are 48 teaspoons in a cup, which is why we use this value in the formula above.
Our cup to teaspoon calculator automatically converts your volume measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Cups and teaspoons are both units used to measure volume. Keep reading to learn more about each unit.
What Is a Cup?
A cup is a unit of volume equal to 0.2365882 liters (L), the base unit for volume. Equal to 8 US fluid ounces or 16 US tablespoons (236.59 mL). [1]
The cup is classified as a US customary unit of volume. Cups can be abbreviated as cup; for example, 1 cup can be written as 1 cup.
When working with cups (cup) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, cups (cup) are widely used across standard volume applications within US customary workflows, engineering documentation, and technical data sheets.
What Is a Teaspoon?
A teaspoon is a unit of volume equal to 0.0049289 liters (L), the base unit for volume. 1/3 of a US tablespoon (4.9289 mL). [2]
The teaspoon is classified as a US customary unit of volume. Teaspoons can be abbreviated as tsp; for example, 1 teaspoon can be written as 1 tsp.
When working with teaspoons (tsp) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, teaspoons (tsp) are widely used across fine-tolerance laboratory, analytical, and micro-scale volume measurements within US customary workflows, engineering documentation, and technical data sheets.
When converting volume between cups (cup) and teaspoons (tsp), keep full floating-point precision (1 cup = 48 tsp; 1 tsp = 0.0208333 cup) during intermediate calculations and round only the final teaspoon figure to match your instrument tolerance.
More Cup & Teaspoon Conversions
Need to calculate in the opposite direction? Use our teaspoons (us) to cups (us) calculator to switch your starting unit immediately. You can also explore related tools such as converting teaspoons (us) to cups (us), converting tablespoons (us) to teaspoons (us), or converting milliliters to teaspoons (us).
Convert from Cups
Weight and volume require ingredient density (g/mL). Choose a USDA FoodData Central verified ingredient below:
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Volume)·Volume & Liquid Metrology Standard — Cups (US) (cup) to Teaspoons (US) (tsp)
- [2]NIST HB 44 SpecificationNIST HB 44 (Liquid & Dry Capacity Tables)·Unit Specifications: Cup (US Customary) (cup) & Teaspoon (US) (tsp)
- [3]NIST SP 811 ReferenceNIST SP 811 (NIST SP 811 App. B.9)·Conversion Factors & Mathematical Basis (cup to tsp)