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21 Cups to Teaspoons

21 cups equals 1,008 teaspoons. Use the formula, worked example, and conversion table below to check the math.

21 cup = 1,008 tsp
cup × 48 = tsp
Try: 16 cup to tsp 20 cup to tsp 22 cup to tsp 26 cup to tsp
21 cup is also
21 cup = 4.97 L 21 cup = 1.31 gal 21 cup = 4,968.35 mL 21 cup = 168 fl oz 21 cup = 10.5 pt 21 cup = 5.25 qt 21 cup = 336 tbsp
cup
1,008 tsp

Step-by-Step Calculation

cup × 48 = tsp
  1. Start with 21 cup
  2. Multiply by 48: 21 × 48 = 1,008
  3. Result: 21 cup = 1,008 tsp

This conversion factor (48) is the same for every cup to teaspoon calculation.

Cup to Teaspoon Conversion Table

Cups (cup) Teaspoons (tsp)
1 cup 48 tsp
2 cup 96 tsp
5 cup 240 tsp
10 cup 480 tsp
15 cup 720 tsp
20 cup 960 tsp
21 cup 1,008 tsp
25 cup 1,200 tsp
50 cup 2,400 tsp
75 cup 3,600 tsp
100 cup 4,800 tsp
250 cup 12,000 tsp
500 cup 24,000 tsp
1,000 cup 48,000 tsp
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Frequently Asked Questions

21 cups equals 1,008 teaspoons.
The formula is: cup × 48 = tsp. See the cup to tsp formula page for worked examples.
Use the teaspoons to cups converter. The reverse formula is: tsp ÷ 48 = cup.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (cup × 48 = tsp) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026