Cups to Teaspoons Converter

This table covers common small-recipe fractions of a cup.

To convert cups to teaspoons, multiply the cup value by 48. For example, 0.5 cup times 48 equals 24 teaspoons.

To go the other way, use the Teaspoons to Cups converter instead, which divides by 48 for you. For example, 24 teaspoons divided by 48 equals 0.5 cup. For the tablespoon scale instead, see the Cups to Tablespoons converter below.

A US teaspoon is defined as exactly 1/3 of a tablespoon, and a tablespoon as exactly 1/16 of a cup, so a cup equals 16 times 3, or 48, teaspoons exactly. This chain of exact definitions is why the 48:1 ratio has no rounding error, unlike a metric-to-US conversion, which involves a genuinely irrational relationship between the two measurement systems.

When This Conversion Is Actually Useful

Converting all the way from cups to teaspoons is uncommon for full recipes, since cups and tablespoons are the more practical measuring tools for most quantities. It comes up most often for very small ingredient amounts, like flavoring extracts or spices, or when a recipe or dosing instruction is written entirely in teaspoons and needs to be checked against a total cup measurement. If that same cup value instead needs a metric total, the Cups to Milliliters converter below covers that direction.

When a recipe lists dry ingredients in grams, the Cups to Grams Converter converts a cup of flour, sugar, butter, rice, or cocoa into its weight. The Teaspoons to Grams Converter turns teaspoons into grams, using the density of the ingredient you pick. For butter specifically, the Butter Converter moves between sticks, cups, tablespoons, and grams in one step.

Every volume converter that shares a unit with this page, cups or teaspoons, starting with the reverse conversion, one page per pair of units, then the converters that show many units at once.

The Reverse Conversion

• Teaspoons to Cups Converter: 1 cup = 48 teaspoons

Milliliters and Liters

• Cups to Liters Converter: 1 liter is about 4.226753 cups
• Cups to Milliliters Converter: 1 cup = 236.5882365 milliliters
• Milliliters to Teaspoons Converter: 1 teaspoon = 4.92892159375 milliliters

Spoons, Fluid Ounces and Cups

• Cups to Pints Converter: 1 pint = 2 cups
• Cups to Quarts Converter: 1 quart = 4 cups
• Cups to Tablespoons Converter: 1 cup = 16 tablespoons
• Cups to Gallons Converter: 1 gallon = 16 cups
• Cups to Fluid Ounces Converter: 1 cup = 8 fluid ounces
• Fluid Ounces to Teaspoons Converter: 1 fluid ounce = 6 teaspoons
• Tablespoons to Teaspoons Converter: 1 tablespoon = 3 teaspoons
• Cups to Deciliters Converter: 1 cup = 2.365882365 deciliters

Multi-Unit Converters

• Gallon Converter: gallons to quarts, pints, cups, fluid ounces, liters and cubic feet at once
• Volume Converter: any volume in every unit at once, from milliliters to cubic yards, including UK imperial units