US Fluid Ounces to Metric Tablespoons (fl oz to tbsp)
1 US fluid ounce equals 1.971568638 metric tablespoons (rounded).
How to convert US fluid ounces to metric tablespoons
To convert US fluid ounces to metric tablespoons, multiply the number of US fluid ounces by 1.971568638. The factor is rounded to 10 significant digits. To go the other way, multiply metric tablespoons by 0.5072103405 (rounded).
metric tablespoons = US fluid ounces × 1.971568638
Example: 10 US fluid ounces = 19.71568638 metric 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 Fluid Ounce (fl oz)
One 128th of a US gallon, 29.5735 mL. Not the same as the weight ounce, and about 4% larger than the imperial fluid ounce.
Fluid ounce began as an attempt to link volume to weight: the volume occupied by one ounce of some substance, such as wine in England or water in Scotland. Definitions varied by region and by liquid. When Britain defined its imperial gallon in 1824 as the space of ten pounds of water, the imperial fluid ounce came out so that an ounce of water weighs about one avoirdupois ounce. The US fluid ounce followed a different path and comes from the older wine gallon.
The US fluid ounce is exactly 1/128 of a US gallon, 29.5735295625 milliliters, about 4 percent bigger than the imperial one at 28.4130625 milliliters. American nutrition labels use yet another figure, treating one fluid ounce as 30 milliliters, a convenient rounding for serving sizes. The name is a trap, because a fluid ounce measures space while a weight ounce measures mass. A US fluid ounce of water weighs a bit more than an ounce of weight, while a fluid ounce of honey weighs considerably more.
1 US fluid ounce = 0.02957352956 liters (approximately).
Sources: Wikipedia: Fluid ounce; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
Metric Tablespoon (tbsp)
Exactly 15 mL, used in most countries.
Fifteen milliliters is the working size of the tablespoon in most of the world, and it is a rounded figure. Older customary values were about 14.8 mL for the US and about 14.2 mL for the UK, and modern UK and US measuring spoons are both treated as 15 mL in most contexts. The tablespoon itself dates to the early 1700s, when it first appeared in place settings for soup.
The 15 mL spoon is a staple in recipes everywhere. Three metric teaspoons make a tablespoon, and 16 and two thirds make a 250 mL metric cup. Australia is the notable exception, using a 20 milliliter tablespoon and counting four teaspoons to it, so a recipe from one country can taste off in another. Check which spoon a cook has in mind: scoops of oil, honey or baking powder amount to a third more in Australia.
1 metric tablespoon = 0.015 liters (exactly).
Sources: Wikipedia: Tablespoon; Wikipedia: Metric cup
Related conversions
- Metric tablespoons to US fluid ounces (reverse)
- US fluid ounces to liters
- US fluid ounces to milliliters
- US fluid ounces to US gallons
- US fluid ounces to US cups
- US fluid ounces to cubic meters
- US fluid ounces to cubic centimeters
- US fluid ounces to US quarts
- US fluid ounces to US pints
- US fluid ounces to US tablespoons
- US fluid ounces to US teaspoons
- US fluid ounces to metric cups
- US fluid ounces to metric teaspoons
- Liters to metric tablespoons
- Milliliters to metric tablespoons
- US gallons to metric tablespoons
- US cups to metric tablespoons
- Cubic meters to metric tablespoons
- Cubic centimeters to metric tablespoons
- US quarts to metric tablespoons
- US pints to metric tablespoons
- US tablespoons to metric tablespoons
- US teaspoons to metric tablespoons
- Metric cups to metric tablespoons
- Metric teaspoons to metric tablespoons
See all volume units.