A US teaspoon is one third of a US tablespoon.
Teaspoons to Dashs Converter — tsp to dash
Convert Teaspoon (tsp) to Dash (dash) using the exact conversion factor (1 teaspoon = 7.99999999 dash). See the formula, worked examples, conversion table, and common uses.
Teaspoons to Dashs 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 cooking dash approximated as 1/8 teaspoon.
Result = input x 4.92892159e-6 / 6.161152e-7.
Volume units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Teaspoons to Dashs
Teaspoon and Dash 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. Teaspoon is most often used for us recipe and cooking measurement for small quantities.
Formula
dashs = teaspoons × 7.99999998986
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon equals 0.00000492892159375 base units, and 1 dash equals 6.161152e-7 base units, so dividing one by the other gives the direct teaspoon-to-dash factor of 7.99999998986.
Simple example
1 tsp × 7.99999999 = 7.99999999 dash
1 teaspoon = 7.99999999 dashs.
Real-world example
2 tsp × 7.99999999 = 15.99999998 dash
2 teaspoons = 15.99999998 dashs.
Conversion table
| Teaspoon (tsp) | Dash (dash) |
|---|---|
| 0.25 tsp | 1.999999997 dash |
| 0.5 tsp | 3.999999995 dash |
| 1 tsp | 7.99999999 dash |
| 2 tsp | 15.99999998 dash |
| 4 tsp | 31.99999996 dash |
| 8 tsp | 63.99999992 dash |
Reverse conversion: Dash to Teaspoon
7.99999999 dash × 0.1250000002 = 1 tsp
7.99999999 dashs = 1 teaspoons.
teaspoons = dashs × 0.125000000159
For a page dedicated to this direction, see Dash 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 Dash (dash)
A cooking dash approximated as 1/8 teaspoon.
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 dashs are in 1 teaspoon?
1 teaspoon equals 7.99999999 dashs, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon to dash?
Multiply the teaspoon value by 7.99999999. The converter above does this instantly to whatever precision you set.
How do I convert dash back to teaspoon?
Use the reverse factor: 1 dash equals 0.1250000002 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 dash?
Dash (dash) is a unit of cooking.
Is the teaspoon to dash 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)