Tbsp to Teaspoon: Convert Tablespoons to Teaspoons
Convert tbsp to teaspoon: one US tablespoon equals 3 teaspoons. Learn the exact ratio, the metric exception, and common spoon conversions.
Why Tablespoons to Teaspoons Comes Up
US recipes switch freely between tablespoons and teaspoons, and halving or doubling a recipe often means converting one to the other. Knowing the ratio keeps measurements exact.
One US tablespoon equals 3 US teaspoons. Our tablespoon converter shows the milliliter value, and the tsp ratio is fixed.
The Tbsp to Teaspoon Formula
The US customary spoon system sets 1 tablespoon equal to 3 teaspoons. Multiply tablespoons by 3 to get teaspoons.
The Exact Calculation
For 1 tbsp: 1 × 3 = 3 tsp. For 2 tbsp: 2 × 3 = 6 tsp. For 1/2 tbsp: 0.5 × 3 = 1.5 tsp. The ratio is exact by US definition.
In milliliters, 1 tbsp is about 14.79 ml and 1 tsp is about 4.93 ml, and 3 × 4.93 = 14.79, confirming the 3-to-1 ratio.
Watch the Metric Tablespoon
In Australia and some other countries, a "tablespoon" is 20 ml, which is 4 metric teaspoons of 5 ml, not 3. The 3-to-1 ratio applies to US and UK teaspoons and tablespoons; use 4-to-1 for the Australian metric tablespoon.
What the Numbers Look Like
A recipe calling for 1 tbsp of vanilla is 3 tsp. A 2 tbsp measure of oil is 6 tsp. Small spice amounts like 1/4 tsp are common, and 3 of them make 3/4 tsp, not 1 tbsp.
For the milliliter value of a teaspoon, our guide to teaspoons to ml covers the metric side.
Tbsp to Teaspoon Compared With Nearby Values
Reference points: 1/2 tbsp = 1.5 tsp, 1 tbsp = 3 tsp, 3 tbsp = 9 tsp. Each tablespoon adds exactly 3 teaspoons.
The reverse, tsp to tbsp, divides by 3, so 6 tsp = 2 tbsp and 9 tsp = 3 tbsp.
When You Need Tbsp in Teaspoons
The conversion matters when scaling recipes or when you only have a teaspoon measure. Halving a 1 tbsp dose gives 1.5 tsp, a common adjustment.
It also helps when a recipe lists one spoon and your set uses the other, keeping the bake consistent.
Frequently Asked Questions
How many tsp is 1 tbsp?
1 US tablespoon equals exactly 3 US teaspoons.
How do I convert tbsp to tsp?
Multiply tablespoons by 3. For 2 tbsp: 2 × 3 = 6 tsp.
Is a tablespoon 3 or 4 teaspoons?
In the US and UK it is 3 teaspoons. The Australian metric tablespoon is 20 ml, which is 4 metric teaspoons.
How many tsp is 1/2 tbsp?
1/2 tablespoon equals 1.5 teaspoons.
How many ml is a tablespoon?
A US tablespoon is about 14.79 ml, and a teaspoon is about 4.93 ml; 3 teaspoons make one tablespoon.
Try the Calculator
Tablespoons to mL Converter
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Quick Summary
1 US tablespoon equals 3 teaspoons. Multiply tablespoons by 3: 1 × 3 = 3 tsp. Note the Australian metric tablespoon is 20 ml (4 tsp), not 3.
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Disclaimer
This content is for educational purposes only and does not constitute financial, tax, legal, or professional advice. Figures reflect 2026 market conditions and are not guaranteed. Tax rules and regulations vary by jurisdiction and change over time; federal and state requirements may differ. Always consult a qualified professional for guidance specific to your situation.
Last Updated 2026 | This article was reviewed for accuracy