Guinness Cups to Grams
Snapshot
1 cup of guinness equals 238.95 grams. Conversion Encyclopedia keeps one fixed beverage basis on this page so the calculator, common values, and reverse page stay aligned.
- Reference basis: 1.01 g/mL.
- Example: 2 cups = 477.91 g.
- Source basis: Beer density approximation.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Converter Calculator
238.95 Grams
SwitchExplanation
Convert US cups of guinness to grams using a density reference of 1.01 g/mL. With the US cup fixed at 236.588 mL, that gives 238.95 grams per cup for this ingredient.
That keeps guinness tied to one density reference instead of switching between generic liquid charts. Guinness can vary a little with formulation and temperature, so the converter keeps one density reference for consistency.
Common Conversion Values
| Cups | Grams |
|---|---|
| 1/4 | 59.74 |
| 1/3 | 79.64 |
| 1/2 | 119.48 |
| 3/4 | 179.22 |
| 1 | 238.95 |
| 1 1/2 | 358.43 |
| 2 | 477.91 |
| 3 | 716.86 |
| 4 | 955.82 |
Guinness density evidence
Guinness uses 1.01 g/mL in this dataset, which is 1.0% heavier by volume than the 1 g/mL water reference. Evidence status: medium-confidence. Source basis: Beer density approximation near room temperature.
Brand formulation, alcohol or sugar concentration, carbonation, and serving temperature can change the weight of a measured volume. Use this value as a documented reference rather than a producer specification.
Frequently Asked Questions
How many grams are in 1 cup of Guinness?
1 US cup of Guinness is 238.95 grams using the density reference for this converter.
What density basis does this cup conversion use for Guinness?
It uses a density of 1.01 g/mL with the US cup standard (236.588 mL).
How many grams are in 2 cups of Guinness?
2 US cups of Guinness are 477.91 grams using the density reference for this converter.
How do I convert Guinness grams back to cups?
Use the mirror Grams To Cups page; for this ingredient, 1 g = < 0.01 cups.