A US teaspoon is one third of a US tablespoon.
Teaspoons to Metric cups Converter — tsp to metric cup
Convert Teaspoon (tsp) to Metric cup (metric cup) using the exact conversion factor (1 teaspoon = 0.0197156864 metric cup). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Teaspoons to Metric cups converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
A metric cup is 250 milliliters.
Result = input x 4.92892159e-6 / 0.00025.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Teaspoons to Metric cups
Teaspoon and Metric cup appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Teaspoon is typically associated with united States (cooking and recipe measurement), while Metric cup is typically associated with australia, New Zealand, United Kingdom, Canada (recipes and cooking measurement).
Formula
metric cups = teaspoons × 0.019715686375
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon equals 0.00000492892159375 base units, and 1 metric cup equals 0.00025 base units, so dividing one by the other gives the direct teaspoon-to-metric cup factor of 0.019715686375.
Simple example
1 tsp × 0.01971568637 = 0.0197156864 metric cup
1 teaspoon = 0.0197156864 metric cups.
Real-world example
10 tsp × 0.01971568637 = 0.1971568637 metric cup
10 teaspoons = 0.1971568637 metric cups.
Conversion table
| Teaspoon (tsp) | Metric cup (metric cup) |
|---|---|
| 1 tsp | 0.0197156864 metric cup |
| 5 tsp | 0.0985784319 metric cup |
| 10 tsp | 0.1971568637 metric cup |
| 25 tsp | 0.4928921594 metric cup |
| 50 tsp | 0.9857843187 metric cup |
| 100 tsp | 1.971568637 metric cup |
Reverse conversion: Metric cup to Teaspoon
0.0197156864 metric cup × 50.72103405 = 1.000000001 tsp
0.0197156864 metric cups = 1.000000001 teaspoons.
teaspoons = metric cups × 50.7210340528
For a page dedicated to this direction, see Metric cup to Teaspoon.
Teaspoon vs. Metric cup
| Aspect | Teaspoon | Metric cup |
|---|---|---|
| Family | US customary unit | Non-SI unit (culinary, metric countries) |
| Typical use | US recipe and cooking measurement for small quantities | Recipe and cooking measurement in metric-using English-speaking countries |
| Where it's used | United States (cooking and recipe measurement) | Australia, New Zealand, United Kingdom, Canada (recipes and cooking measurement) |
Understanding the Teaspoon
Teaspoon (tsp) measures volume. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. It is classified as a US customary unit.
Where it's used: United States (cooking and recipe measurement)
Uses of the Teaspoon today
- US recipe and cooking measurement for small quantities
- Medication dosing instructions in the US
- Baking measurement alongside the tablespoon and cup
Understanding the Metric cup
Metric cup (metric cup) measures volume. The metric cup used in Australia, New Zealand, the UK, and Canada is defined as exactly 250 milliliters. It is classified as a Non-SI unit (culinary, metric countries).
Where it's used: Australia, New Zealand, United Kingdom, Canada (recipes and cooking measurement)
Metric cup vs. US cup. The metric cup (250 mL) is about 4% larger than the US cooking cup (240 mL) — small for most recipes, but worth checking when following a recipe from a different country.
Uses of the Metric cup today
- Recipe and cooking measurement in metric-using English-speaking countries
- Baking and portion measurement
History of the Metric cup
As Commonwealth countries metricated through the 20th century, cookbook publishers and standards bodies adopted a round 250 mL 'metric cup' so recipes could use a convenient, easily-scaled volume rather than the US's 240 mL or older imperial teacup conventions.
Historical origin. Metric cup was not the invention of a single named person; it developed through the process described above.
Teaspoon — sources
- NIST Handbook 44, Appendix C — General tables of units including the US teaspoon definition.
Metric cup — sources
- National Measurement Institute (Australia) — Kitchen measures — Documents the 250 mL metric cup standard.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many metric cups are in 1 teaspoon?
1 teaspoon equals 0.0197156864 metric cups, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon to metric cup?
Multiply the teaspoon value by 0.01971568637. The converter above does this instantly to whatever precision you set.
How do I convert metric cup back to teaspoon?
Use the reverse factor: 1 metric cup equals 50.72103405 teaspoons. You can also use the swap control in the converter above to flip the direction instantly.
What is a teaspoon?
Teaspoon (tsp) measures volume. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. It is classified as a US customary unit.
What is a metric cup?
Metric cup (metric cup) measures volume. The metric cup used in Australia, New Zealand, the UK, and Canada is defined as exactly 250 milliliters. It is classified as a Non-SI unit (culinary, metric countries).
Is the teaspoon to metric cup conversion exact?
Yes. The metric cup used in Australia, New Zealand, the UK, and Canada is defined as exactly 250 milliliters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between metric cup vs. us cup?
The metric cup (250 mL) is about 4% larger than the US cooking cup (240 mL) — small for most recipes, but worth checking when following a recipe from a different country.
Where is the teaspoon still used today?
United States (cooking and recipe measurement)