BakeCalcs.uk
Teaspoon to Tablespoon Converter
Convert between teaspoons, tablespoons, and millilitres for precise cooking measurements.
How We Calculate This
The converter uses the standard relationships between teaspoons, tablespoons, and millilitres.
Conversion Factors
- 1 teaspoon (tsp) = 5 ml
- 1 tablespoon (tbsp) = 15 ml = 3 teaspoons
- 1 US cup = 240 ml = 16 tablespoons = 48 teaspoons
Quick Reference
- 1/4 tsp = 1.25 ml
- 1/2 tsp = 2.5 ml
- 1 tsp = 5 ml
- 1 tbsp = 15 ml = 3 tsp
- 2 tbsp = 30 ml = 6 tsp
Frequently Asked Questions
There are exactly 3 teaspoons in 1 tablespoon. This is a universal standard: 1 tablespoon = 15ml, 1 teaspoon = 5ml.
A standard teaspoon is 5ml. This applies to UK, US, and metric measuring spoons. The older UK "medicine teaspoon" was slightly different, but modern measuring spoons are all standardised to 5ml.
Regular cutlery teaspoons and tablespoons are not accurate measuring tools — they vary significantly in size. For baking, always use proper measuring spoons. A cutlery teaspoon can hold anywhere from 3ml to 7ml.
The Australian tablespoon is 20ml (4 teaspoons), not 15ml like the UK/US standard. This is important when following Australian recipes — their tablespoon is one-third larger. Australian teaspoons are the standard 5ml.
There are 16 tablespoons in a US cup (240ml) and about 17 tablespoons in a metric cup (250ml). Knowing this helps when you need to measure a partial cup without a measuring cup.
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Last updated: February 2026
All calculations are based on standard ratios and conversions. Results may vary with specific ingredients, equipment, and conditions.