How to convert Metric tablespoons (15 mL) to US customary teaspoons
tsp (US) = tbsp (metric) × 3.04326204316587
Multiply the tbsp (metric) reading by 3.04326204316587.
Worked examples
1 tbsp (metric) ≈ 3.043262043 tsp (US)
1 × 3.04326204316587 ≈ 3.043262043
2 tbsp (metric) ≈ 6.086524086 tsp (US)
2 × 3.04326204316587 ≈ 6.086524086
Frequently asked questions
Which recipe measure should I select?
A metric cup is 250 mL, while a US customary cup is 236.5882365 mL. Metric teaspoons and tablespoons here are 5 mL and 15 mL; US customary spoons differ. Match the named definition in the recipe.
Metric tablespoons (15 mL) to US customary teaspoons table
Fixed reference · Metric tablespoon (15 mL) to US customary teaspoon
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
Metric tablespoon (15 mL) (tbsp (metric))
US customary teaspoon (tsp (US))
0
0
0.1
0.3043262043
0.5
1.521631022
1
3.043262043
2
6.086524086
5
15.21631022
10
30.43262043
25
76.08155108
50
152.1631022
100
304.3262043
1000
3043.262043
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.