How do I convert teaspoons to cups?

To convert teaspoons to cups, use our converter above. Enter your value and get instant, accurate results. Our tool handles both metric and imperial volume units.

What is the difference between metric and imperial volume units?

Metric volume uses liters and milliliters, based on powers of 10. Imperial uses gallons, quarts, pints, and cups. US and UK gallons differ in size, with UK gallons being about 20% larger.

How accurate are these volume conversions?

Our conversions are accurate to at least 6 decimal places using precise mathematical formulas. This exceeds the accuracy needed for most cooking, scientific, and industrial applications.

Teaspoon to Cup Converter

Convert Teaspoons to Cups instantly

From

tsp

Result

0cup

Cup

Conversion Formula

Cup = Teaspoon × 0.020833

Where:

tsp = Teaspoon
cup = Cup

What is a Teaspoon?

The teaspoon (tsp) is a unit of volume in the imperial system of measurement.

What is a Cup?

The cup (cup) is a unit of volume in the imperial system of measurement.

How to Convert Teaspoon to Cup

Convert teaspoons to cups instantly

Quick Reference:

1 tsp = 0.020833 cup
1 cup = 47.999968 tsp

Common Teaspoon to Cup Conversions

1 tsp
= 0.02 cup

5 tsp
= 0.10 cup

10 tsp
= 0.21 cup

25 tsp
= 0.52 cup

50 tsp
= 1.04 cup

100 tsp
= 2.08 cup

Conversion Reference Table

Teaspoon (tsp)	Cup (cup)
1	0.0208
2	0.0417
3	0.0625
4	0.0833
5	0.1042
10	0.2083
15	0.3125
20	0.4167
25	0.5208
50	1.0417
75	1.5625
100	2.0833
250	5.2083
500	10.4167
1,000	20.8333

Quick reference table showing common teaspoons to cups conversions.

Real-World Volume Conversions

👨‍🍳

Cooking and Baking

Converting between cups, tablespoons, and milliliters when following international recipes. A US cup is 237ml, while metric recipes often use 250ml.

⛽

Fuel and Gas

Converting fuel efficiency (miles per gallon vs liters per 100km) and fuel tank capacity. US vehicles measure in gallons, while most countries use liters.

🥤

Beverages and Drinks

Soft drinks come in various sizes: 355ml cans (12 fl oz), 500ml bottles, 2-liter bottles, or gallon jugs. Understanding these conversions helps compare values.

🏊

Swimming Pools and Spas

Pool volume calculations for chemical treatments and water capacity. Pools are measured in gallons (US) or cubic meters/liters (elsewhere).

💊

Medical Dosing

Medication doses use milliliters (ml) or cubic centimeters (cc). Precise conversions are critical for safe medication administration.

🐠

Aquariums and Fish Tanks

Tank capacity affects filtration, water changes, and fish stocking. Aquariums are sold in gallons (US) or liters depending on region.

Volume Conversion FAQs

Common Conversion Mistakes

⚠Confusing the direction of conversion — always check whether you are converting from Teaspoon to Cup or vice versa.
⚠Rounding too early in multi-step calculations. Keep full precision until the final result.
⚠Using outdated or approximate conversion factors. Our converter uses values traceable to international measurement standards.

Sources & Standards

Conversion factors on this page are based on definitions from the International Bureau of Weights and Measures (BIPM) and the National Institute of Standards and Technology (NIST). All factors are accurate to at least 6 decimal places.

Last updated: November 27, 2025