1/3 Cup in Milliliters
1/3 cup equals exactly 78.9 ml using the US customary cup (236.588 ml) — in the kitchen, use 80 ml, the rounded figure recipes and nutrition labels assume. That's also 2.7 fluid ounces or 5.3 tablespoons.
| Milliliters (exact, US cup) | 78.9 ml |
|---|---|
| Milliliters (recipe-rounded) | 80 ml |
| Fluid ounces (US) | 2.7 fl oz |
| Tablespoons (US) | 5.3 tbsp |
| If it's a metric cup (250 ml) | 83 ml |
Which "cup" does your recipe mean?
US recipes mean the 80 ml cup used here. Australian, NZ, and many metric recipes mean a 250 ml cup — for 1/3 cup that's 83 ml, a 6% difference that only matters in large batches. Old UK recipes may mean the 284 ml imperial cup; when in doubt, convert to grams instead.
All cup amounts in ml
| Cups | Exact ml | Recipe ml |
|---|---|---|
| 1/4 cup | 59.1 | 60 |
| 1/3 cup | 78.9 | 80 |
| half a cup | 118.3 | 120 |
| 2/3 cup | 157.7 | 160 |
| 3/4 cup | 177.4 | 180 |
| 1 cup | 236.6 | 240 |
| 1 1/2 cups | 354.9 | 360 |
| 2 cups | 473.2 | 480 |
| 3 cups | 709.8 | 720 |
| 4 cups | 946.4 | 960 |
Measuring 1/3 cup without a liquid cup
Use a scale: 1/3 cup of water weighs exactly 80 g — grams and milliliters are interchangeable for water and thin liquids. For milk it's 82 g. Weight measuring beats eyeballing a line at an angle.
Converters: cups to ml · ml to cups · Weight instead: 1/3 cup in grams
Data verified 2026-08-20 · Methodology