Teaspoon (water-equivalent) to Millilitre of Water

Free instant teaspoon (water-equivalent) to millilitre of water converter. 1 tsp = 4.92892 mL.

4.92892
Formula
1 tsp = 4.92892 mL

Common Teaspoon (water-equivalent) to Millilitre of Water values

Common Teaspoon (water-equivalent) to Millilitre of Water conversion values.
Teaspoon (water-equivalent) (tsp)Millilitre of Water (mL)
14.92892
524.6446
1049.2892
25123.223
50246.446
100492.892
5002464.46
10004928.92

How does Teaspoon (water-equivalent) to Millilitre of Water conversion work?

Type a value in the Teaspoon (water-equivalent) (tsp) field and the equivalent in Millilitre of Water (mL) appears instantly to the right. The math uses the exact formula shown above โ€” no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.

Teaspoon (water-equivalent). 1 US teaspoon = 4.929 mL (1/6 fl oz). Equivalent grams assume water density.

Millilitre of Water. For water, 1 millilitre weighs exactly 1 gram (the definition of the gram). True at standard pressure and 4ยฐC.

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No submit button โ€” the result updates as you type. Math runs entirely in your browser, so itโ€™s as fast as your device.

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Works in any modern browser โ€” Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.

๐ŸŽฏ Accurate conversions

Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.

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Frequently asked

What is the formula for converting Teaspoon (water-equivalent) to Millilitre of Water?+
The formula is: 1 tsp = 4.92892 mL. Type any value into the calculator above and the result appears instantly.
How do I convert Millilitre of Water back to Teaspoon (water-equivalent)?+
Click the swap button (โ‡„) above to go to the Millilitre of Water โ†’ Teaspoon (water-equivalent) converter, or use the inverse formula derived from the one shown.
How accurate is the conversion?+
Conversion factors used here are exact rational values from NIST SP 811 and the BIPM SI brochure (e.g. 1 ft = 0.3048 m exactly, 1 lb = 0.45359237 kg exactly). Trailing-digit differences vs hand calculation come only from binary floating-point representation, never from the conversion factor itself.
Where do these conversion factors come from?+
Length and mass factors come from the 1959 international yard-and-pound agreement; SI base units (metre, kilogram, second, kelvin) come from the 2019 BIPM redefinition; energy and pressure factors are NIST SP 811 reference values. Each editorial section above lists the specific source for that category.
Can I copy the conversion factor for use elsewhere?+
Yes. The factor in the formula above is the exact rational value used internally; copying it into Excel or another tool reproduces the result to floating-point precision.

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