US Teaspoons to US Tablespoons (tsp to tbsp)
1 US teaspoon equals 0.3333333333 US tablespoons (rounded).
How to convert US teaspoons to US tablespoons
To convert US teaspoons to US tablespoons, multiply the number of US teaspoons by 0.3333333333. The factor is rounded to 10 significant digits. To go the other way, multiply US tablespoons by 3.
US tablespoons = US teaspoons × 0.3333333333
Example: 10 US teaspoons = 3.333333333 US tablespoons.
Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.
About these units
US Teaspoon (tsp)
One sixth of a US fluid ounce, exactly 4.92892159375 mL. Commonly rounded to 5 mL in recipes.
Teaspoons arrived with tea. Small spoons were common in Europe from at least the 13th century, and the earliest cited mention of a teaspoon is a London Gazette advertisement from 27 December 1686. Britain's Commutation Act of 1784 cut the tea tax from 119 percent to 12.5 percent, tea became cheap, and cups and spoons grew with it. By the 1850s the culinary teaspoon had settled as one third of a tablespoon.
The US teaspoon is one sixth of a US fluid ounce, exactly 4.92892159375 milliliters, though for nutrition labels and medicine it is rounded to 5 mL. Apothecaries once called the small spoon cochleare minus, to distinguish it from the larger cochleare majus. Household spoons are poor measuring tools: one study of 71 kitchen teaspoons found volumes from 2.5 to 7.3 milliliters, which is why dosing instructions point to standard measuring spoons or syringes.
1 US teaspoon = 0.004928921594 liters (approximately).
Sources: Wikipedia: Teaspoon; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
US Tablespoon (tbsp)
Half a US fluid ounce (14.787 mL), equal to 3 teaspoons.
A tablespoon was once a spoon first and a unit second. Tablespoons entered place settings around 1700, first reserved for soup, and in the 18th century apothecaries used an unofficial tablespoon of four fluid drams, or half a fluid ounce. That is the origin of the modern US definition, which turns the spoon into precisely half a US fluid ounce.
The US tablespoon is therefore 14.7868 milliliters, equal to three US teaspoons, and sixteen of them make a US customary cup. It is often treated as 15 mL, and American nutrition labels define a tablespoon as exactly 15 mL, so the two figures sit within about 1.4 percent of each other. The regional difference that matters is Australia, which uses a larger 20 milliliter tablespoon, so a recipe asking for a tablespoon of oil or baking powder can go wrong when translated across the Pacific.
1 US tablespoon = 0.01478676478 liters (approximately).
Sources: Wikipedia: Tablespoon; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
Related conversions
- US tablespoons to US teaspoons (reverse)
- US teaspoons to liters
- US teaspoons to milliliters
- US teaspoons to US gallons
- US teaspoons to US cups
- US teaspoons to US fluid ounces
- US teaspoons to cubic meters
- US teaspoons to cubic centimeters
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- US teaspoons to US pints
- US teaspoons to metric cups
- US teaspoons to metric tablespoons
- US teaspoons to metric teaspoons
- Liters to US tablespoons
- Milliliters to US tablespoons
- US gallons to US tablespoons
- US cups to US tablespoons
- US fluid ounces to US tablespoons
- Cubic meters to US tablespoons
- Cubic centimeters to US tablespoons
- US quarts to US tablespoons
- US pints to US tablespoons
- Metric cups to US tablespoons
- Metric tablespoons to US tablespoons
- Metric teaspoons to US tablespoons
See all volume units.