40 ml to Cups
40 ml is 0.17 US cups — in the kitchen, measure 3 tbsp. One US cup is 236.588 ml, so millilitres rarely land on a round cup fraction; the practical measure above is the closest you can actually scoop.
Measuring cups vary by country: this answer uses the US customary cup of 236.588 ml. Against a 250 ml metric cup, 40 ml is 0.16 cups instead.
How many cups is 40 ml?
| US cups (exact) | 0.17 cups |
|---|---|
| Kitchen measure | 3 tbsp |
| Tablespoons | 2.7 tbsp |
| Teaspoons | 8 tsp |
| US fluid ounces | 1.4 fl oz |
| Metric cups (250 ml) | 0.16 cups |
What does 40 ml weigh?
Millilitres measure volume, so the weight depends entirely on what you are measuring. At 40 ml:
| Ingredient | Weight |
|---|---|
| Flour | 20 g |
| Sugar | 34 g |
| Powdered Sugar | 20 g |
| Brown Sugar | 36 g |
| Honey | 57 g |
| Butter | 38 g |
| Milk | 41 g |
| Rice | 31 g |
Water is the one case where the two match: 40 ml of water weighs about 40 g.
Nearby amounts
| ml | Cups (exact) | Kitchen measure |
|---|---|---|
| 25 ml | 0.11 | ⅛ cup |
| 30 ml | 0.13 | ⅛ cup |
| 50 ml | 0.21 | ¼ cup |
| 60 ml | 0.25 | ¼ cup |
| 75 ml | 0.32 | ⅓ cup |
Convert another amount
40 ml = 0.169 cup
More: the full ml-to-cups chart · cups to ml · cups to grams by ingredient
1 US cup = 236.588 ml; metric cup = 250 ml; US legal cup = 240 ml. Ingredient weights from the open density dataset. Data verified 2026-08-20. Methodology.