420g Water in Cups
420 grams of water is 1¾ cups — 236g per US cup. Doughs, sauces and grain cooking sit here. Because water weighs 1 g per ml, the cup reading and the ml reading are interchangeable.
How many cups is 420g of water?
420 grams of water equals:
Measuring by hand? That is 1 cup + 12 tablespoons + 1½ teaspoons. It is about 168% of a 250 ml glass.
Water is the one ingredient where grams and millilitres match one for one, so a jug marked in ml is as accurate as a scale.
Grams to Cups Converter
Quick select
420 grams of Water is about 1¾ cups, using a 236.588 millilitre cup at 236 grams per cup.
Reading
- cups
- 1.78
- tbsp
- 28.5
- tsp
- 85.4
See the full 420g to cups guide →
US customary cup (236.588ml) · 236g per cup
Dedicated conversion guides use the default US customary cup.
Applies to this page only — the database value (236g per US cup) is unchanged.
420g of water vs other ingredients
Grams measure weight and cups measure volume, so the same 420 grams fills a different amount of cup for every ingredient:
| Ingredient | 420g in cups | g per cup |
|---|---|---|
| Water | 1¾ cups | 236 |
| All-Purpose Flour | 3⅜ cups | 125 |
| Granulated Sugar | 2⅛ cups | 200 |
| Butter | 1⅞ cups | 227 |
See all 420g conversions on the 420 grams to cups chart.
Nearby water amounts
| Grams of water | Cups | Tablespoons |
|---|---|---|
| 375g | 1⅝ cups | 25 tbsp |
| 390g | 1⅔ cups | 26 tbsp |
| 400g | 1⅔ cups | 27 tbsp |
| 410g | 1¾ cups | 28 tbsp |
| 450g | 1⅞ cups | 31 tbsp |
| 454g | 1⅞ cups | 31 tbsp |
| 480g | 2 cups | 33 tbsp |
| 500g | 2⅛ cups | 34 tbsp |
Full ladder on the water grams to cups chart.
Frequently Asked Questions
How many cups is 420g of water?
420 grams of water is 1¾ cups. In kitchen measures that is 1 cup + 12 tablespoons + 1½ teaspoons, worked out from 236 grams per US cup.
How many grams are in 1 cup of water?
One US cup of water weighs about 236 grams, one tablespoon about 14.75 grams, and one teaspoon about 4.92 grams. This page divides 420 grams by that cup weight.
Is 420g of water the same as 420g of all-purpose flour?
No. 420g of water is 1¾ cups, while 420g of all-purpose flour is 3⅜ cups. Same weight on the scale, different volume in the cup, because the two have different densities.
How do I measure 420g of water without a scale?
Use 1 cup + 12 tablespoons + 1½ teaspoons. Water is the one ingredient where grams and millilitres match one for one, so a jug marked in ml is as accurate as a scale.
Is it better to weigh water or measure it in cups?
Weighing is more accurate, especially in baking, because it removes the variation in how the water is packed into the cup. If you have no scale, use the cup figure above and keep your measuring method consistent across the whole recipe.