How many liters is 1 teaspoon?

1 US teaspoon equals exactly 0.00492892 liters (approximately 4.929 mL). This is based on the US customary definition where 1 tsp = 4.92892159375 mL.

What is the difference between a US teaspoon and a metric teaspoon?

A US teaspoon is 4.92892 mL, while a metric (international) teaspoon is exactly 5 mL. The difference is small (~1.4%) but matters in precise recipes or lab work.

How many teaspoons are in 1 liter?

There are approximately 202.88 US teaspoons in 1 liter (1000 ÷ 4.92892 ≈ 202.88).

Can I use this for UK or Australian teaspoons?

This tool uses the US definition (4.929 mL). UK and Australian teaspoons are 5 mL (metric). For those, simply multiply your teaspoon count by 0.005 to get liters.

Is this converter accurate enough for baking?

Yes. Results are computed to 6 significant figures, which is far more precise than any measuring spoon. For everyday cooking the rounded values shown are more than sufficient.

Teaspoons to Liters Converter

Name: Teaspoons to Liters Converter
Availability: InStock
Author: Nham Vu

Enter a number of US teaspoons to instantly see the equivalent volume in liters and milliliters.

Teaspoons (US tsp)

Number of teaspoons

Liters (L) —

Milliliters (mL) —

1 US tsp = 4.92892159375 mL (US customary)

Quick Reference

Teaspoons	Liters	Milliliters

Summary

Enter a number of US teaspoons to instantly see the equivalent volume in liters and milliliters.

How it works

Enter the number of teaspoons in the input field.
The converter multiplies your value by 0.00492892159375 to get liters.
Milliliters are calculated by multiplying the same value by 4.92892159375.
Results update instantly as you type — no button needed.
Use the reference table to look up common teaspoon amounts at a glance.

Use cases

Scale up a recipe from teaspoons to liters for large-batch cooking.
Convert a medication dosage listed in teaspoons to milliliters.
Check liquid volumes when a measuring jug shows only liters.
Solve chemistry or lab problems that mix US customary and metric units.
Quickly verify a converted volume while meal prepping.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu