Water
US Tablespoon to Gram
US Cup (236ml)
236.6g
Metric Cup (250ml)
250.0g
A US cup (236.59ml) of water weighs 237g, while a metric cup (250ml) weighs 250g. That's a 5.7% difference - make sure you know which cup size your recipe uses!
Water — Quick Reference
Common us tablespoon to gram conversions
| US Tablespoon | Gram |
|---|---|
| ½ tbsp | 7g |
| 1 tbsp | 15g |
| 2 tbsp | 30g |
| 3 tbsp | 44g |
| 4 tbsp | 59g |
| 5 tbsp | 74g |
| 6 tbsp | 89g |
Based on water density of 1 g/ml (poured method). Source: USDA FoodData Central.
Understanding Water Conversions
The Math Behind This Conversion
To convert 1 us tablespoon of water to gram, we use the density of water (1 g/ml). A us tablespoon contains 14.79ml, so 1 us tablespoon equals 14.79ml. Multiplying by the density: 14.79ml × 1 g/ml = 14.8g.
US vs Metric Cups: Why It Matters
When converting water, the cup size matters significantly. A US cup (236.6ml) of water weighs 237g, while a metric cup (250ml) weighs 250g—a difference of 13g (6%). If you're following a recipe from a different country, using the wrong cup size could affect your results. American recipes use US cups, while recipes from Australia, UK, and most other countries use metric cups.
Measurement Tip
Measure water in a liquid measuring cup (the kind with a spout) placed on a flat surface. Read the measurement at eye level, looking at the bottom of the meniscus (the curved surface of the liquid). For sticky liquids like honey, lightly coat the measuring cup with oil first to help it slide out easily.
About Our Data
The density value of 1 g/ml for water is from the USDA FoodData Central database (ID: 174158). This measurement was taken with water poured into the measuring cup.