Why 4.92892 as the conversion factor?

One US teaspoon is legally and commonly defined as exactly 4.92892 milliliters — using this precise factor gives an accurate conversion for recipes and dosing.

Is a US teaspoon the same as a UK/metric teaspoon?

Not quite — a metric teaspoon is often rounded to exactly 5 mL for simplicity, which is very close to but not identical to the US teaspoon's 4.92892 mL.

Milliliters to Teaspoons Converter

Convert a volume in milliliters to US teaspoons, a common conversion needed for cooking, baking, and following recipes or medication dosing instructions that use different measurement systems.

Inputs

Results

Teaspoons: 3.04 tsp

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Formula

Teaspoons = Milliliters / 4.92892

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