A US teaspoon is one third of a US tablespoon.
Teaspoons to Microliters Converter — tsp to uL
Convert Teaspoon (tsp) to Microliter (uL) using the exact conversion factor (1 teaspoon = 4,928.921594 microliter). See the formula, worked examples, conversion table, and common uses.
Teaspoons to Microliters converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
Microliter is 0.000001 liter units.
Result = input x 4.92892159e-6 / 1e-9.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Teaspoons to Microliters
Teaspoon and Microliter appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Teaspoon is most often used for us recipe and cooking measurement for small quantities.
Formula
microliters = teaspoons × 4928.92159375
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon equals 0.00000492892159375 base units, and 1 microliter equals 1e-9 base units, so dividing one by the other gives the direct teaspoon-to-microliter factor of 4928.92159375.
Simple example
1 tsp × 4928.921594 = 4,928.921594 uL
1 teaspoon = 4,928.921594 microliters.
Real-world example
10 tsp × 4928.921594 = 49,289.21594 uL
10 teaspoons = 49,289.21594 microliters.
Conversion table
| Teaspoon (tsp) | Microliter (uL) |
|---|---|
| 1 tsp | 4,928.921594 uL |
| 5 tsp | 24,644.60797 uL |
| 10 tsp | 49,289.21594 uL |
| 25 tsp | 123,223.0398 uL |
| 50 tsp | 246,446.0797 uL |
| 100 tsp | 492,892.1594 uL |
Reverse conversion: Microliter to Teaspoon
1 uL × 0.0002028841362 = 0.0002028841 tsp
1 microliter = 0.0002028841 teaspoons.
teaspoons = microliters × 0.000202884136211
For a page dedicated to this direction, see Microliter to Teaspoon.
Understanding the Teaspoon
Teaspoon (tsp) measures volume. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. It is classified as a US customary unit.
Where it's used: United States (cooking and recipe measurement)
Uses of the Teaspoon today
- US recipe and cooking measurement for small quantities
- Medication dosing instructions in the US
- Baking measurement alongside the tablespoon and cup
Understanding the Microliter (uL)
Microliter is 0.000001 liter units.
Teaspoon — sources
- NIST Handbook 44, Appendix C — General tables of units including the US teaspoon definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many microliters are in 1 teaspoon?
1 teaspoon equals 4,928.921594 microliters, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon to microliter?
Multiply the teaspoon value by 4928.921594. The converter above does this instantly to whatever precision you set.
How do I convert microliter back to teaspoon?
Use the reverse factor: 1 microliter equals 0.0002028841 teaspoons. You can also use the swap control in the converter above to flip the direction instantly.
What is a teaspoon?
Teaspoon (tsp) measures volume. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. It is classified as a US customary unit.
What is a microliter?
Microliter (uL) is a unit of volume.
Is the teaspoon to microliter conversion exact?
Yes. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the teaspoon still used today?
United States (cooking and recipe measurement)