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1 US Cup Water = 237g

1 US Cup of water weighs 237 grams (8.36 ounces or 0.52 pounds; 236.6 mL or 16 tablespoons in volume) when measured poured liquid at a verified bulk density of 237g per 236.6 mL US Customary cup.

Imperial weight: 8.36 oz (0.52 lb) • Volume: 236.6 mL (16 tbsp)

Batch
Measuring density
Standard: Poured liquid237g / cup
Converted Measure
1 US cup Water (Poured liquid) =
237 g
Physical scoop breakdown1.00 cup
1 cup
Edit either side to reverseWater chart →
Grams
237 g
Ounces
8.36 oz
US Cups
1 cup
Metric (250mL)
0.95 c
Tablespoons
16 tbsp
Milliliters
236.6 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 1 US Cup Water

Batch scaling conversion table around 1 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×) 118.5g (4.18 oz) ½ cup 118.3 mL
Standard (1×) 237g (8.36 oz) 1 cup 236.6 mL
1.5× Batch 355.5g (12.54 oz) 1 ½ cups 354.9 mL
Double Batch (2×) 474g (16.72 oz) 2 cups 473.2 mL
Triple Batch (3×) 711g (25.08 oz) 3 cups 709.8 mL

Measuring 1 US Cup of Water in the Kitchen

Measured poured liquid at a verified bulk density of 237g per US cup, 1 US cup of water weighs 237 grams (8.36 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 1 cup of water? ▾

1 US Cup of water measured Poured liquid weighs 237 grams (8.36 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.