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Tablespoons to Milliliters

1 Tablespoon (US) (tbsp) = 14.7868 Milliliter (ml)

Result
14.7868 ml
1 tbsp = 14.7868 ml

How Many Milliliters in a Tablespoon?

One US tablespoon equals approximately 14.787 milliliters. For practical cooking purposes, this is commonly rounded to 15 ml, which is also the exact size of a metric tablespoon. This conversion is needed when following American recipes with metric measuring tools, or when precise dosing of liquid ingredients is required. Whether you are measuring medicine, making cocktails with a recipe that uses tablespoons, or converting a sauce recipe for international friends, understanding the tablespoon-to-ml relationship helps you measure with confidence.

How to Convert Tablespoon (US) to Milliliter

  1. Start with your measurement in US tablespoons.
  2. Multiply the tablespoon value by 14.787 for an exact US conversion, or by 15 for metric tablespoons.
  3. The result is your measurement in milliliters.
  4. For practical cooking, using 15 ml per tablespoon is perfectly accurate. The 1.4% difference from the exact US tablespoon is smaller than the variation from how you fill the spoon.
  5. Remember: 1 US tablespoon = 3 teaspoons = about 15 ml = 1/2 fluid ounce.

Real-World Examples

A salad dressing recipe calls for 3 tablespoons of vinegar. You have a metric syringe for precise pouring.
3 x 14.787 = 44.4 ml. Using the 15 ml standard: 3 x 15 = 45 ml. Either is fine for a dressing.
A cough syrup dose is 2 tablespoons. How many ml should you pour?
2 x 14.787 = 29.6 ml. Most medicine cups show 30 ml for 2 tablespoons, using the 15 ml standard.
A cocktail recipe calls for 1.5 tablespoons of simple syrup.
1.5 x 14.787 = 22.2 ml. For bar precision, you can use a jigger marked in ml.
You need 6 tablespoons of lemon juice for a large batch of hummus.
6 x 14.787 = 88.7 ml. That is roughly 90 ml, or just under 1/3 of a standard lemon juice bottle.

Quick Reference

Tablespoon (US) (tbsp) Milliliter (ml)
1 14.7868
2 29.5736
5 73.934
10 147.868
25 369.67
50 739.34
100 1478.68
500 7393.4
1,000 14786.8

History of Tablespoon (US) and Milliliter

The tablespoon as a cooking measurement evolved from the actual dining utensil. In the 19th century, as cookbook publishing exploded, the need for standardized measurements led to the tablespoon being defined as a specific volume. The US standardized it at one-sixteenth of a US cup (14.787 ml), while the metric system defined it at exactly 15 ml. The British tablespoon was historically about 17.7 ml but has largely been replaced by the metric standard in modern UK recipes. These small differences rarely matter in savory cooking but can accumulate in baking when many tablespoons of an ingredient are called for.

Common Mistakes to Avoid

  • Confusing tablespoons (tbsp) with teaspoons (tsp). A tablespoon is 15 ml; a teaspoon is 5 ml. Using the wrong one means your measurement is off by a factor of three.
  • Not distinguishing between US tablespoons (14.787 ml), metric tablespoons (15 ml), and Australian tablespoons (20 ml). For most cooking the US/metric difference is negligible, but the Australian tablespoon is 33% larger.
  • Assuming a "heaping" tablespoon is the same as a level one. A heaping tablespoon can hold 25-30 ml depending on the ingredient, nearly double the standard amount.

Frequently Asked Questions

Is 15 ml exactly one tablespoon?
A metric tablespoon is exactly 15 ml. A US tablespoon is technically 14.787 ml, but this difference (less than 1.5%) is smaller than the measurement error from using a spoon. For all practical cooking purposes, 15 ml = 1 tablespoon.
How many tablespoons are in 100 ml?
Using 15 ml per tablespoon: 100 / 15 = 6.67 tablespoons, or 6 tablespoons plus 2 teaspoons.
Why do medicine dosages use tablespoons and milliliters interchangeably?
Historically, patients used household tablespoons for liquid medicine. However, actual tablespoons vary in size, leading to dosing errors. The medical community now recommends measuring in milliliters with a marked syringe or cup. When a medicine label says "1 tablespoon," they mean 15 ml.
Quick Tip

If you frequently convert between tablespoons and milliliters, invest in a set of measuring spoons with dual markings (both tbsp/tsp and ml). Most modern stainless steel sets include these. For liquid ingredients, a small graduated cylinder or a kitchen syringe marked in ml gives the most accurate measurement.