Quick answer: There are 3 teaspoons in one standard US or metric tablespoon. One measuring teaspoon holds 5 milliliters, while one measuring tablespoon holds 15 milliliters. Therefore, 15 ÷ 5 = 3 teaspoons.
Here is the basic conversion:
1 tablespoon = 3 teaspoons = 15 mL
However, an Australian tablespoon is larger. It holds 20 mL, which equals 4 metric teaspoons. Check where a recipe was published before converting its measurements.
Tablespoons to Teaspoons at a Glance
| Tablespoons | Teaspoons |
| 1/4 tablespoon | 3/4 teaspoon |
| 1/3 tablespoon | 1 teaspoon |
| 1/2 tablespoon | 1 1/2 teaspoons |
| 2/3 tablespoon | 2 teaspoons |
| 3/4 tablespoon | 2 1/4 teaspoons |
| 1 tablespoon | 3 teaspoons |
| 1 1/2 tablespoons | 4 1/2 teaspoons |
| 2 tablespoons | 6 teaspoons |
| 3 tablespoons | 9 teaspoons |
| 4 tablespoons | 12 teaspoons |
| 8 tablespoons | 24 teaspoons |
| 16 tablespoons | 48 teaspoons |
Need to convert another quantity? Use the free Kitchen Measurement Converter to switch between US, metric, Australian and Imperial kitchen units.
Tablespoon to Teaspoon Conversion Formula
To convert tablespoons to teaspoons, multiply the number of tablespoons by 3:
Teaspoons = Tablespoons × 3
Example 1: Convert 2 tablespoons to teaspoons
2 × 3 = 6
2 tablespoons = 6 teaspoons
Example 2: Convert 1/2 tablespoon to teaspoons
0.5 × 3 = 1.5
1/2 tablespoon = 1 1/2 teaspoons
Example 3: Convert 3/4 tablespoon to teaspoons
0.75 × 3 = 2.25
3/4 tablespoon = 2 1/4 teaspoons
These calculations apply to standard US and metric measuring spoons. Use a different ratio when a recipe specifically uses Australian tablespoons.
Complete Tablespoon-to-Teaspoon Conversion Chart
Use this chart when a recipe lists tablespoons but only teaspoon measures are available.
| Tablespoons | Teaspoons | Milliliters |
| 1/4 tbsp | 3/4 tsp | 3.75 mL |
| 1/3 tbsp | 1 tsp | 5 mL |
| 1/2 tbsp | 1 1/2 tsp | 7.5 mL |
| 2/3 tbsp | 2 tsp | 10 mL |
| 3/4 tbsp | 2 1/4 tsp | 11.25 mL |
| 1 tbsp | 3 tsp | 15 mL |
| 1 1/2 tbsp | 4 1/2 tsp | 22.5 mL |
| 2 tbsp | 6 tsp | 30 mL |
| 3 tbsp | 9 tsp | 45 mL |
| 4 tbsp | 12 tsp | 60 mL |
| 5 tbsp | 15 tsp | 75 mL |
| 6 tbsp | 18 tsp | 90 mL |
| 8 tbsp | 24 tsp | 120 mL |
| 12 tbsp | 36 tsp | 180 mL |
| 16 tbsp | 48 tsp | 240 mL |
The standard relationship of one tablespoon to three teaspoons is also listed in the USDA measurement conversion tables.
How to Convert Teaspoons to Tablespoons
To convert in the opposite direction, divide the number of teaspoons by 3:
Tablespoons = Teaspoons ÷ 3
For example:
- 1 teaspoon ÷ 3 = 1/3 tablespoon
- 1 1/2 teaspoons ÷ 3 = 1/2 tablespoon
- 2 teaspoons ÷ 3 = 2/3 tablespoon
- 3 teaspoons ÷ 3 = 1 tablespoon
- 6 teaspoons ÷ 3 = 2 tablespoons
- 12 teaspoons ÷ 3 = 4 tablespoons
This formula is useful when scaling a recipe or working with an incomplete set of measuring spoons.
How Many Teaspoons Are in Half a Tablespoon?
There are 1 1/2 teaspoons in half a tablespoon.
The calculation is:
1/2 × 3 = 1 1/2 teaspoons
To measure this amount, fill a 1-teaspoon measure once and a 1/2-teaspoon measure once.
Half a tablespoon also equals 7.5 mL. For a complete metric chart, see how many milliliters are in a tablespoon.
How Many Teaspoons Are in Two Tablespoons?
There are 6 teaspoons in 2 tablespoons.
The calculation is:
2 × 3 = 6 teaspoons
This conversion works for liquid and dry ingredients because tablespoons and teaspoons both measure volume. However, the ingredient’s weight in grams can vary according to its density.
Does the Ingredient Change the Conversion?
No. A standard tablespoon always contains three standard teaspoons, whether you are measuring:
- Olive oil
- Lemon juice
- Honey
- Tahini
- Flour
- Sugar
- Salt
- Herbs
- Spices
The tablespoon-to-teaspoon relationship does not change with the ingredient. However, volume and weight are different measurements. Three teaspoons of flour and three teaspoons of honey occupy the same volume but do not weigh the same number of grams.
Use measuring spoons for teaspoons and tablespoons. If a recipe provides grams, use a kitchen scale rather than assuming that every tablespoon has the same weight.
US, Metric and Australian Tablespoons
The word “tablespoon” does not represent the same volume in every measurement system.
| Measurement system | One tablespoon | Teaspoons per tablespoon |
| Standard US kitchen measure | Approximately 15 mL | 3 teaspoons |
| International metric measure | 15 mL | 3 teaspoons |
| Australian metric measure | 20 mL | 4 teaspoons |
For practical US cooking and food labeling, a teaspoon is treated as 5 mL and a tablespoon as 15 mL. These equivalents are documented in U.S. food-labeling regulations.
The current NIST unit-conversion table likewise lists one measuring tablespoon as three measuring teaspoons and 15 mL.
Australia commonly uses a 20 mL tablespoon with four 5 mL teaspoons. This convention also appears in measurement guidance from the Australian Government Department of Health.
Therefore, check a recipe’s country of origin when:
- The recipe comes from an Australian cookbook or website.
- The ingredient quantity appears unusually large.
- The recipe provides both spoon and milliliter measurements.
- Precise proportions are important for baking.
If an Australian recipe calls for one tablespoon, use four 5 mL teaspoons unless the recipe provides another definition.
How Tablespoons and Teaspoons Connect to Cups
In standard US kitchen measurements:
- 3 teaspoons = 1 tablespoon
- 16 tablespoons = 1 cup
- 48 teaspoons = 1 cup
- 8 tablespoons = 1/2 cup
- 4 tablespoons = 1/4 cup
- 2 tablespoons = 1/8 cup
This means that 12 teaspoons equal 1/4 cup, 24 teaspoons equal 1/2 cup and 48 teaspoons equal one US cup.
For larger liquid measurements, continue with the guides explaining how many cups are in a pint and how many cups are in a quart.
How to Measure Tablespoons and Teaspoons Accurately
Use standardized measuring spoons marked tbsp and tsp. Do not rely on ordinary eating spoons because flatware differs in shape, depth and capacity.
For dry ingredients:
- Fill the measuring spoon.
- Run a straight edge across the top.
- Remove the excess ingredient.
- Use the level amount unless the recipe requests a heaped or rounded spoonful.
For liquids:
- Hold the measuring spoon over a bowl or level surface.
- Fill it carefully to the rim.
- Transfer the liquid without spilling.
- Use a small marked measuring cup when measuring several tablespoons.
A tablespoon is commonly abbreviated as tbsp, while a teaspoon is abbreviated as tsp. Because the abbreviations look similar, read the ingredient list carefully before measuring.
If you need help identifying the correct spoon, see the guide explaining how much a measuring teaspoon holds. You can also use the complete teaspoon-to-milliliter conversion chart when a recipe uses metric measurements.
Practical Recipe Examples
These examples use standard US or metric measuring spoons:
- 1 tablespoon olive oil = 3 teaspoons
- 1/2 tablespoon lemon juice = 1 1/2 teaspoons
- 2 tablespoons tahini = 6 teaspoons
- 3 tablespoons yogurt = 9 teaspoons
- 4 tablespoons milk = 12 teaspoons
- 8 tablespoons water = 24 teaspoons or 1/2 US cup
The ingredient does not change the volume conversion. However, always follow the recipe’s instructions about whether a dry ingredient should be level, rounded, packed or heaped.
How This Conversion Was Verified
The conversion in this guide was checked against authoritative measurement references:
- NIST General Tables of Units of Measurement: one measuring tablespoon equals three measuring teaspoons and 15 mL.
- USDA Measurement Conversion Tables: one tablespoon equals three teaspoons.
- U.S. food-labeling regulations: one teaspoon is treated as 5 mL and one tablespoon as 15 mL for nutrition labeling.
- Australian Government cooking guidance: an Australian teaspoon is 5 mL and an Australian tablespoon is 20 mL.
Frequently Asked Questions
How many teaspoons are in one tablespoon?
One standard US or metric tablespoon contains three teaspoons. Each practical measuring teaspoon holds 5 mL, while a standard measuring tablespoon holds 15 mL. Australian recipes may use a larger 20 mL tablespoon containing four teaspoons.
How many teaspoons are in half a tablespoon?
Half a standard tablespoon equals 1 1/2 teaspoons or 7.5 mL. Measure it by combining one full teaspoon with one half-teaspoon. This conversion applies to standard US and metric measuring spoons.
How many teaspoons are in two tablespoons?
Two standard tablespoons equal six teaspoons or 30 mL. Multiply the number of tablespoons by three to calculate the teaspoon amount. For an Australian 20 mL tablespoon, two tablespoons would equal eight 5 mL teaspoons.
Is one tablespoon always equal to three teaspoons?
One tablespoon equals three teaspoons in standard US and international metric kitchen measurements. However, an Australian tablespoon holds 20 mL and equals four 5 mL teaspoons, so the recipe’s country of origin can matter.
Is 15 mL the same as one tablespoon?
Yes. Fifteen milliliters is the standard practical volume of one US or international metric measuring tablespoon. It also equals three 5 mL measuring teaspoons. An Australian tablespoon is different because it usually holds 20 mL.
Can I use an ordinary spoon instead of a measuring spoon?
An ordinary eating spoon is not a reliable substitute because flatware varies in depth, shape and capacity. For consistent cooking and baking results, use standardized spoons marked 1 tablespoon, 1 teaspoon or their milliliter equivalents.
How do I convert teaspoons into tablespoons?
Divide the number of standard teaspoons by three. For example, six teaspoons divided by three equals two tablespoons. If the amount does not divide evenly, retain the fraction, such as two teaspoons equaling two-thirds of a tablespoon.
Final Answer
There are 3 teaspoons in one standard US or metric tablespoon:
1 tablespoon = 3 teaspoons = 15 mL
To convert tablespoons to teaspoons, multiply by three. To convert teaspoons to tablespoons, divide by three.
Remember that an Australian tablespoon is larger:
1 Australian tablespoon = 4 teaspoons = 20 mL
Use standardized measuring spoons and check the recipe’s country of origin whenever measurement accuracy matters.