Skip to content
OverCalculator
Theme
ConversionMore in Volume & cookingComparisons: ConversionAngles & coordinatesData & number systemsEnergy & powerLength & areaMass & weightMore conversions

ml to tsp Converter

This calculator converts nonnegative liquid volumes between milliliters and US teaspoons. It uses **1 US teaspoon = 4.92892159375 mL**. It does not substitute a rounded spoon convention.

Published

Converted volume

US teaspoons
3.043 US tsp
US teaspoon factor
4.92892159375 mL per tsp

15.00 ml equals 3.043 US tsp.

US teaspoon: 1 tsp = 4.92892159375 mL.

Results update as you type.

Worked example

conversionType: mlToTsp · amount: 15

Result: 3.043 US tsp

Try it →

mL to US teaspoons converter

This calculator converts nonnegative liquid volumes between milliliters and US teaspoons. It uses 1 US teaspoon = 4.92892159375 mL. It does not substitute a rounded spoon convention.

Formula

US tsp=mL4.92892159375\text{US tsp}=\frac{\text{mL}}{4.92892159375}

mL=US tsp×4.92892159375\text{mL}=\text{US tsp}\times4.92892159375

For 15 mL, the unrounded result is 3.0432620431658695 US teaspoons and the display is 3.043 US tsp.

Related: the teaspoons to milliliters converter for the reverse direction, plus the ml to tbsp converter and tbsp to ml converter.

Frequently asked questions

How do I convert mL to US teaspoons?
Divide mL by 4.92892159375. The reverse direction multiplies US teaspoons by the same factor.

Sources

  • BIPM-SI-9-3.02

    primary · Jul 9, 2026

    Supports: SI base/derived units, prefixes, coherent dimensional relations, exact defining constants, day and degree accepted with SI; this route applies 15 / 4.92892159375 (exact defined/conventional relationship).

    — v9th edition, version 3.02 (August 2025)

  • NIST-SP811-2008

    primary · Jul 9, 2026

    Supports: US customary/SI conversion factors and precision/significant-digit guidance; this route applies 15 / 4.92892159375 (exact defined/conventional relationship).

    — vNIST SP 811, 2008 edition

  • NIST-HB44-2026

    primary · Jul 9, 2026

    Supports: US customary length, mass, liquid-volume, pressure and exact legal-metrology relationships; this route applies 15 / 4.92892159375 (exact defined/conventional relationship).

    — vNIST Handbook 44, 2026 edition

Related calculators

mg to teaspoon ConverterConvert milligrams to US teaspoons with explicit density presets for water, salt, sugar, flour, or a custom ingredient; not a universal mass-to-volume factor.Teaspoons to Milliliters ConverterConvert US teaspoons to milliliters using 4.92892159375 mL per tsp, with reverse mL to tsp math and metric teaspoon comparison.tsp to grams ConverterConvert US teaspoons to grams with ingredient density presets for water, sugar, salt, flour, honey, oil, butter, or a custom g per mL value.g to tsp ConverterConvert grams to US teaspoons using ingredient density, with presets for water, flour, sugar, salt, and custom g/mL values.Cups to Pints ConverterConvert US cups to pints for scaling recipes into pint jars, deli tubs, cartons, freezer containers, and small-batch food prep.Cups to Quarts ConverterConvert US cups to quarts for scaling recipes into stockpots, mixing bowls, canning batches, pitchers, and quart-size containers.

ml to tsp Converter updated at

Verified

Found an error? Report it