Teaspoons to ml

A teaspoon to millilitre converter switches between US teaspoon measurements (common in recipes) and metric millilitres. 1 US teaspoon = 4

The calculator uses the standard published formula for teaspoon to millilitre. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, litres. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: mL = tsp × 4.929 (US teaspoon). Each step in the calculation is shown so you can verify the result manually.