Convert US Tablespoon to Metric Tablespoon
Convert us tablespoons to metric tablespoons instantly. 1 us tablespoon = 0.9857843188 metric tablespoon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Metric Tablespoon to US Tablespoon converter for the reverse conversion.
Units explained
US Tablespoon
A US tablespoon is half a US fluid ounce (14.7868 mL).
A standardized cooking measure equal to three teaspoons.
Universal in US recipes for liquids and condiments.
US cooking measure.
Metric Tablespoon
A metric tablespoon is exactly 15 milliliters.
Adopted with metric cooking standards (Australia uses 20 mL).
Standard metric cooking measure for liquids.
Metrication.
US Tablespoon to Metric Tablespoon conversion formula
The relationship between us tablespoons and metric tablespoons:
To convert us tablespoons to metric tablespoons, multiply the value in us tablespoons by 0.9857843188. To reverse, multiply metric tablespoons by 1.0144206811.
How to use this converter
Type a value into the calculator. The result in metric tablespoons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Metric Tablespoon to US Tablespoon converter for the reverse direction.
Step-by-step: convert us tablespoons to metric tablespoons
- Write down the value in us tablespoons (tbsp).
- Multiply that value by the factor 0.9857843188.
- The product is the equivalent value in metric tablespoons (tbsp).
- To reverse, multiply the metric tablespoon value by 1.0144206811.
Worked examples
Example 1 — Convert 1 tbsp to tbsp:
1 × 0.9857843188 = 0.9857843188 tbsp
Example 2 — Convert 100 tbsp to tbsp:
100 × 0.9857843188 = 98.578431875 tbsp
Real-world example — Plastic-film thickness alternates
A 150-us tablespoon plastic film converts cleanly to metric tablespoons — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 tbsp × 0.9857843188 = 147.8676478125 tbsp
Real-world example — Hair-width scale measurements
A 70-us tablespoon measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like metric tablespoons for direct comparison across supplier datasheets.
70 tbsp × 0.9857843188 = 69.0049023125 tbsp
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 us tablespoons), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 tbsp × 0.9857843188 = 2.9573529563 tbsp
US Tablespoon to Metric Tablespoon conversion table
Standard reference values for converting us tablespoons to metric tablespoons:
| US Tablespoon [tbsp] | Metric Tablespoon [tbsp] |
|---|---|
| 0.01 | 0.0098578432 |
| 0.1 | 0.0985784319 |
| 1 | 0.9857843188 |
| 2 | 1.9715686375 |
| 3 | 2.9573529563 |
| 4 | 3.943137275 |
| 5 | 4.9289215938 |
| 10 | 9.8578431875 |
| 20 | 19.715686375 |
| 30 | 29.5735295625 |
| 40 | 39.43137275 |
| 50 | 49.2892159375 |
| 100 | 98.578431875 |
| 500 | 492.892159375 |
| 1000 | 985.78431875 |
Frequently asked questions
How many metric tablespoons is 1 us tablespoon?
How do I convert us tablespoons to metric tablespoons?
How do I convert metric tablespoons back to us tablespoons?
How many metric tablespoons is 100 us tablespoons?
Popular volume unit conversions
Convert US Tablespoon to other volume units
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Metric / SI (8 units)
US Customary (Liquid) (7 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 tbsp = 0.9857843188 tbsp) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.