A cooking dash approximated as 1/8 teaspoon.
Dashs to Teaspoons Converter — dash to tsp
Convert Dash (dash) to Teaspoon (tsp) using the exact conversion factor (1 dash = 0.1250000002 teaspoon). See the formula, worked examples, conversion table, and common uses.
Dashs to Teaspoons converter
Converter
Cooking Converter
Convert cooking volume and mass units used in recipes and nutrition workflows.
Context values
Some unit families need one extra value for a physically accurate result.
A US teaspoon is one third of a US tablespoon.
Result = input x 6.161152e-7 / 4.92892159e-6.
Volume units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Dashs to Teaspoons
Dash and Teaspoon both show up in recipes, and converting between them matters whenever a recipe from one country's cookbook needs to be followed with another country's measuring tools. Specifically: A cooking dash approximated as 1/8 teaspoon, and a US teaspoon is one third of a US tablespoon.
Formula
teaspoons = dashs × 0.125000000159
This factor comes from each unit's defined relationship to the category's base unit: 1 dash equals 6.161152e-7 base units, and 1 teaspoon equals 0.00000492892159375 base units, so dividing one by the other gives the direct dash-to-teaspoon factor of 0.125000000159.
Simple example
1 dash × 0.1250000002 = 0.1250000002 tsp
1 dash = 0.1250000002 teaspoons.
Real-world example
2 dash × 0.1250000002 = 0.2500000003 tsp
2 dashs = 0.2500000003 teaspoons.
Conversion table
| Dash (dash) | Teaspoon (tsp) |
|---|---|
| 0.25 dash | 0.03125 tsp |
| 0.5 dash | 0.0625000001 tsp |
| 1 dash | 0.1250000002 tsp |
| 2 dash | 0.2500000003 tsp |
| 4 dash | 0.5000000006 tsp |
| 8 dash | 1.000000001 tsp |
Reverse conversion: Teaspoon to Dash
0.1250000002 tsp × 7.99999999 = 1 dash
0.1250000002 teaspoons = 1 dashs.
dashs = teaspoons × 7.99999998986
For a page dedicated to this direction, see Teaspoon to Dash.
Understanding the Dash (dash)
A cooking dash approximated as 1/8 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
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 teaspoons are in 1 dash?
1 dash equals 0.1250000002 teaspoons, using the exact defined conversion factor rather than an estimate.
How do I convert dash to teaspoon?
Multiply the dash value by 0.1250000002. The converter above does this instantly to whatever precision you set.
How do I convert teaspoon back to dash?
Use the reverse factor: 1 teaspoon equals 7.99999999 dashs. You can also use the swap control in the converter above to flip the direction instantly.
What is a dash?
Dash (dash) is a unit of cooking.
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.
Is the dash to teaspoon 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.