Convert Metric Cup to US Teaspoon
Convert metric cups to us teaspoons instantly. 1 metric cup = 50.7210340528 us teaspoon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Teaspoon to Metric Cup converter for the reverse conversion.
Units explained
Metric Cup
A metric cup is exactly 250 milliliters.
Adopted with metrication in Australia, New Zealand and other countries.
Standard cooking cup in metric-recipe countries.
Metrication, 20th c.
US Teaspoon
A US teaspoon is one third of a US tablespoon (4.9289 mL).
A standardized small cooking measure.
Used everywhere in US recipes and home dosing.
US cooking measure.
Metric Cup to US Teaspoon conversion formula
The relationship between metric cups and us teaspoons:
To convert metric cups to us teaspoons, multiply the value in metric cups by 50.7210340528. To reverse, multiply us teaspoons by 0.0197156864.
How to use this converter
Type a value into the calculator. The result in us teaspoons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the US Teaspoon to Metric Cup converter for the reverse direction.
Step-by-step: convert metric cups to us teaspoons
- Write down the value in metric cups (cup).
- Multiply that value by the factor 50.7210340528.
- The product is the equivalent value in us teaspoons (tsp).
- To reverse, multiply the us teaspoon value by 0.0197156864.
Worked examples
Example 1 — Convert 1 cup to tsp:
1 × 50.7210340528 = 50.7210340528 tsp
Example 2 — Convert 100 cup to tsp:
100 × 50.7210340528 = 5072.1034052764 tsp
Real-world example — Hair-width scale measurements
A 70-metric cup measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like us teaspoons for direct comparison across supplier datasheets.
70 cup × 50.7210340528 = 3550.4723836935 tsp
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 metric cups), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 cup × 50.7210340528 = 152.1631021583 tsp
Real-world example — Plastic-film thickness alternates
A 150-metric cup plastic film converts cleanly to us teaspoons — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 cup × 50.7210340528 = 7608.1551079147 tsp
Metric Cup to US Teaspoon conversion table
Standard reference values for converting metric cups to us teaspoons:
| Metric Cup [cup] | US Teaspoon [tsp] |
|---|---|
| 0.01 | 0.5072103405 |
| 0.1 | 5.0721034053 |
| 1 | 50.7210340528 |
| 2 | 101.4420681055 |
| 3 | 152.1631021583 |
| 4 | 202.8841362111 |
| 5 | 253.6051702638 |
| 10 | 507.2103405276 |
| 20 | 1014.4206810553 |
| 30 | 1521.6310215829 |
| 40 | 2028.8413621106 |
| 50 | 2536.0517026382 |
| 100 | 5072.1034052764 |
| 500 | 25360.5170263823 |
| 1000 | 50721.0340527645 |
Frequently asked questions
How many us teaspoons is 1 metric cup?
How do I convert metric cups to us teaspoons?
How do I convert us teaspoons back to metric cups?
How many us teaspoons is 100 metric cups?
Popular volume unit conversions
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Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (2 units)
Sources & references
Conversion factor (1 cup = 50.7210340528 tsp) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.