A US customary cup is 236.5882365 milliliters.
Cups to Dashs Converter — cup to dash
Convert Cup (cup) to Dash (dash) using the exact conversion factor (1 cup = 383.9999995 dash). See the formula, worked examples, conversion table, history, and common uses.
Cups 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 0.0002365882365 / 6.161152e-7.
Volume units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Cups to Dashs
Cup 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. Cup is most often used for us recipe and cooking measurement.
Formula
dashs = cups × 383.999999513
This factor comes from each unit's defined relationship to the category's base unit: 1 cup equals 0.0002365882365 base units, and 1 dash equals 6.161152e-7 base units, so dividing one by the other gives the direct cup-to-dash factor of 383.999999513.
Simple example
1 cup × 383.9999995 = 383.9999995 dash
1 cup = 383.9999995 dashs.
Real-world example
2 cup × 383.9999995 = 767.999999 dash
2 cups = 767.999999 dashs.
Conversion table
| Cup (cup) | Dash (dash) |
|---|---|
| 0.25 cup | 95.99999988 dash |
| 0.5 cup | 191.9999998 dash |
| 1 cup | 383.9999995 dash |
| 2 cup | 767.999999 dash |
| 4 cup | 1,535.999998 dash |
| 8 cup | 3,071.999996 dash |
Reverse conversion: Dash to Cup
383.9999995 dash × 0.00260416667 = 1 cup
383.9999995 dashs = 1 cups.
cups = dashs × 0.00260416666997
For a page dedicated to this direction, see Dash to Cup.
Understanding the Cup
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
Where it's used: United States (recipes and cooking measurement)
Cooking cup vs. legal US cup. US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Uses of the Cup today
- US recipe and cooking measurement
- Nutrition labeling serving sizes
- Baking, where volume-based flour/sugar measurement is still common in the US
History of the Cup
The cup as a cooking measure grew out of household and community cookbook conventions in 19th-century America, standardizing what had been ad hoc measurements ('a teacup of flour') into a fixed volume.
The US FDA uses a rounded 240 mL 'metric cup' for nutrition labeling purposes, distinct from the slightly smaller legal/customary cup (236.588 mL, exactly 1/16 of a US gallon) used elsewhere.
Historical origin. Cup was not the invention of a single named person; it developed through the process described above.
Understanding the Dash (dash)
A cooking dash approximated as 1/8 teaspoon.
Cup — sources
- US FDA — Reference Amounts Customarily Consumed — Uses the 240 mL rounded cup for nutrition labeling.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many dashs are in 1 cup?
1 cup equals 383.9999995 dashs, using the exact defined conversion factor rather than an estimate.
How do I convert cup to dash?
Multiply the cup value by 383.9999995. The converter above does this instantly to whatever precision you set.
How do I convert dash back to cup?
Use the reverse factor: 1 dash equals 0.0026041667 cups. You can also use the swap control in the converter above to flip the direction instantly.
What is a cup?
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
What is a dash?
Dash (dash) is a unit of cooking.
Is the cup to dash conversion exact?
Yes. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal 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.
What is the difference between cooking cup vs. legal us cup?
US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Where is the cup still used today?
United States (recipes and cooking measurement)