Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 cup | 0.048 tsp | |
| 0.01 cup | 0.48 tsp | |
| 0.1 cup | 4.8 tsp | |
| 1 cup | 48 tsp | |
| 5 cup | 240 tsp | |
| 10 cup | 480 tsp | |
| 50 cup | 2400 tsp | |
| 100 cup | 4800 tsp | |
| 1000 cup | 48000 tsp |
Common us cup values converted to teaspoon — factor: 1 cup = 48 tsp
| US Cup (cup) | Teaspoon (tsp) | Context |
|---|---|---|
| 0.0625 cup | 3 tsp | Tablespoon |
| 0.125 cup | 6 tsp | Eighth cup |
| 0.25 cup | 12 tsp | Quarter cup |
| 0.333 cup | 15.98 tsp | Third cup |
| 0.5 cup | 24 tsp | Half cup |
| 1 cup | 48 tsp | One cup |
| 2 cup | 96 tsp | One pint |
| 4 cup | 192 tsp | One quart |
| 8 cup | 384 tsp | Half gallon |
| 16 cup | 768 tsp | One gallon |
| 32 cup | 1,536 tsp | 2 gallons |
| 64 cup | 3,072 tsp | 4 gallons |
| 128 cup | 6,144 tsp | 8 gallons |
| 256 cup | 1.229e+04 tsp | Large drum |
| 512 cup | 2.458e+04 tsp | Large drum |
Converting us cup to teaspoon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using teaspoon, or a laboratory protocol may specify volumes in us cup that need to be measured with equipment calibrated in teaspoon.
In everyday use, knowing that 5 cup = 240 tsp and 10 cup = 480 tsp covers most common situations. For bulk calculations, 100 cup = 4800 tsp is a useful anchor. The reverse conversion — teaspoon back to us cup — uses the factor 0.02083, so 1 tsp = 0.02083 cup.
All conversions use the internationally recognized factor of exactly 1 cup = 48 tsp. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Teaspoon = US Cup × 47.999968
Multiply any us cup value by 47.999968 to get teaspoon. One us cup equals 47.999968 tsp.
Reverse: US Cup = Teaspoon × 0.020833347
Cups × 48 = teaspoons. One cup = exactly 48 teaspoons.
½ cup = 24 tsp, ¼ cup = 12 tsp.
Teaspoons ÷ 48 = cups.
Follows American recipes using cups for flour, sugar, milk, and butter.
Tests and standardizes recipes in cup measurements before international publication.
Uses cup portions as standardized serving-size references for dietary counseling.
Teaches beginner cooks using cups as intuitive, equipment-free measuring tools.
Converts cup-based recipes to liter or kilogram quantities for industrial production.
Converts US cup measurements to metric mL when cooking American recipes abroad.
The US customary cup is defined as exactly 8 US fluid ounces, or 236.588 mL. It was standardized by Fannie Farmer in her 1896 cookbook The Boston Cooking-School Cook Book.
The cup is the backbone of US baking: nearly every American recipe uses cup measurements for flour, sugar, butter, and liquids. Standard sets include 1 cup, ½ cup, ⅓ cup, and ¼ cup.
Interesting fact: Australia uses a metric cup of 250 mL, slightly larger than the US cup, which can cause recipe confusion in international cooking.
The US teaspoon is exactly one-third of a tablespoon, 4.92892 mL. It was standardized in the US in the early 20th century partly to address inconsistent home medication dosing.
Teaspoons are the smallest standard cooking measure in the US system, used for spices, leaveners, and flavorings. A medical teaspoon dose conventionally means 5 mL.
Interesting fact: The teaspoon is behind one of science's most cited comparisons: the entire Pacific Ocean would fill roughly 7.1 × 10²³ teaspoons.