ML to TSP Converter

Turn milliliters into teaspoons for recipes, syrups, and small-volume checks.

Enter the volume in milliliters.

Teaspoons

3.0433

Milliliters15
Conversion factor1 US tsp = 4.92892 mL

How to use this ml to tsp converter

  1. Enter milliliters

    Type the volume into the Milliliters field.

  2. Read the result

    The equivalent value in Teaspoons appears instantly.

  3. Round for kitchen use

    For cooking, rounding to the nearest quarter teaspoon is usually precise enough.

Methodology

How this ml to tsp converter works

This converter changes milliliters into U.S. teaspoons using the standard U.S. teaspoon definition. It is useful for recipes, supplements, and any other situation where small metric liquid amounts need to be compared with kitchen teaspoon values.

Formula
teaspoons = milliliters × 0.2028841362
milliliters The metric liquid volume you enter
0.2028841362 U.S. teaspoons per milliliter
Example

15 mL × 0.2028841362 = about 3.04 teaspoons.

A supplement label says to take 10 mL. In teaspoons: 10 × 0.2029 = 2.03 teaspoons — approximately 2 teaspoons.

Assumptions
  • The teaspoon used is the U.S. customary teaspoon.
  • This is a volume conversion, not an ingredient-density conversion.
  • Displayed output is rounded for readability.
Notes
  • Small kitchen units vary by country, so match the recipe system when possible.
  • This page is useful for liquids, extracts, and syrups.
  • For medicine dosing, use the product's measuring device or milliliter markings rather than a household teaspoon.
  • For tablespoon-to-gram work, use the ingredient-aware converter instead.
Sources
  1. NIST reference tables for U.S. customary kitchen volume units

Milliliters and teaspoons for small volumes

Teaspoons are the smallest standard kitchen volume measure in U.S. cooking, while milliliters serve the same role in metric systems. The U.S. teaspoon is approximately 4.929 mL, which is slightly less than the widely used 5 mL metric teaspoon. This small difference rarely matters in cooking but can be significant for medicine dosing — always use the product's measuring device or a marked syringe for medications. This converter is most useful for adapting metric recipes to U.S. kitchen tools and vice versa.

ML to tsp converter FAQs

How many teaspoons are in 5 mL?

About 1.01 U.S. teaspoons, which is why 5 mL is often treated as approximately 1 teaspoon.

Does this work for ingredient weight?

No. It only converts liquid volume.

Why is 1 teaspoon not exactly 5 mL here?

Because the U.S. teaspoon is slightly smaller than a perfect 5 mL metric teaspoon.

Written by Jan Křenek Founder and lead developer
Reviewed by DigitSum Methodology Review Formula verification and QA
Last updated Mar 11, 2026

Use this as an estimate and validate important decisions with a qualified professional.

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