Live Converter
Convert Liquid Measurement Online
Enter your value above to convert cups to teaspoons or vice versa.
Real-World Examples
The Uses of Cups to Teaspoons Conversion
A US cup contains exactly 48 teaspoons, a figure that matters most when a recipe's small-measurement ingredients need to be scaled against a cup-based total.
Scaling Spice Ratios in a Larger Batch
Bakers scaling up a recipe that specifies a spice or leavening agent in teaspoons per cup of flour use this conversion to keep the ratio accurate at a larger batch size.
Measuring Small Fractions of a Cup
Cooks without a tiny fractional measuring cup on hand convert an awkward cup amount into teaspoons for more precise, manageable measuring.
Converting Essential Oil or Extract Dilution Ratios
Someone following a recipe that dilutes an extract or essential oil by the teaspoon per cup of liquid uses this conversion to scale the ratio to a different batch size.
Quick Reference
Comprehensive Conversion Table
Our quick table gives you instant results, so you don't have to calculate these common values manually.
| Conversion | Formula | Result (tsp) |
|---|---|---|
| 0.1 cup to tsp | 0.1 × 48.00001552064144 | 4.80 tsp |
| 0.25 cup to tsp | 0.25 × 48.00001552064144 | 12.00 tsp |
| 0.5 cup to tsp | 0.5 × 48.00001552064144 | 24.00 tsp |
| 1 cup to tsp | 1 × 48.00001552064144 | 48.00 tsp |
| 2 cup to tsp | 2 × 48.00001552064144 | 96.00 tsp |
| 3 cup to tsp | 3 × 48.00001552064144 | 144.00 tsp |
| 4 cup to tsp | 4 × 48.00001552064144 | 192.00 tsp |
| 8 cup to tsp | 8 × 48.00001552064144 | 384.00 tsp |
| 12 cup to tsp | 12 × 48.00001552064144 | 576.00 tsp |
Got Questions?
Frequently Asked Questions
How many teaspoons are in 1 cup?
1 cup equals exactly 48 teaspoons, a ratio worth remembering for precise recipe scaling.
How many teaspoons are in a quarter cup?
A quarter cup equals exactly 12 teaspoons, a common substitution when a recipe only lists one of the two units.
Why does a cup divide so evenly into teaspoons?
The US customary measurement system is built on consistent ratios, so a cup always equals exactly 48 teaspoons, which is also exactly 16 tablespoons times three.
Is this based on the US customary cup and teaspoon?
Yes, both units here are US customary measurements. Australian and UK teaspoons are measured slightly differently, so expect small variations there.