KitchenWeightCalc
Tools

⅔ US Cup Water = 158g

⅔ US Cup of water weighs 158 grams (5.57 ounces or 0.35 pounds; 157.7 mL or 10.67 tablespoons in volume) when measured poured liquid at a verified bulk density of 237g per 236.6 mL US Customary cup.

Imperial weight: 5.57 oz (0.35 lb) • Volume: 157.7 mL (10.67 tbsp)

Batch
Measuring density
Standard: Poured liquid237g / cup
Converted Measure
0.67 US cup Water (Poured liquid) =
158 g
Physical scoop breakdown0.67 cups
1/3 cup
1/3 cup
Edit either side to reverseWater chart →
Grams
158 g
Ounces
5.57 oz
US Cups
⅔ cup
Metric (250mL)
0.63 c
Tablespoons
10.67 tbsp
Milliliters
157.7 mL

Kitchen note: 1 US Customary Cup (236.6 mL) of water (poured liquid) weighs 237g, while 1 International Metric Cup (250 mL) weighs 250g.

Batch Scaling Around ⅔ US Cup Water

Batch scaling conversion table around ⅔ US Cup of Water (0.5× to 3× recipe batches in grams, ounces, US cups, and milliliters)
Batch Scale Weight (g / oz) US Cups & Spoons Metric (mL)
Half Batch (0.5×) 79g (2.79 oz) ⅓ cup 78.9 mL
Standard (1×) 158g (5.57 oz) ⅔ cup 157.7 mL
1.5× Batch 237g (8.36 oz) 1 cup 236.6 mL
Double Batch (2×) 316g (11.15 oz) 1 ⅓ cups 315.5 mL
Triple Batch (3×) 474g (16.72 oz) 2 cups 473.2 mL

Measuring ⅔ US Cup of Water in the Kitchen

Measured poured liquid at a verified bulk density of 237g per US cup, ⅔ US cup of water weighs 158 grams (5.57 ounces).

Place a liquid measuring cup on a flat countertop and read the water meniscus at eye level. Standard water has a pure density of 1.00 g/mL, making 1 US cup exactly 237 grams (or 236.6g).

Source note: NIST Standard Reference Data; 1 US customary cup = 236.588 mL = 236.6 g pure water at 20°C

Frequently Asked Questions

How many grams is ⅔ cup of water? ▾

⅔ US Cup of water measured Poured liquid weighs 158 grams (5.57 ounces).

Why is 1 cup of water exactly 237 grams? ▾

One US customary cup equals 236.588 milliliters; since water has a metric density of 1 gram per milliliter at room temperature, it weighs 237 grams.

Does water temperature affect cup weight? ▾

Warm or cold water varies in density by less than 0.5% across normal cooking ranges, maintaining 237 grams for all culinary purposes.