Gold Density Calculator

A Gold Density Calculator helps you find out how dense a gold sample is. It uses the mass and volume of the sample to calculate its density. This is useful for checking if gold is pure, as pure 24-karat gold has a density of about 19.3 g/cm³. If your calculation matches this value, the gold is most likely pure. People use this calculator in jewelry testing, gold trading, and scientific measurements.

This tool belongs to the Material Density Calculator category.

formula

The primary formula for density is:

Density = Mass / Volume

The internationally recognized density for pure, 24-karat gold is approximately 19.3 grams per cubic centimeter (g/cm³). A calculated density close to this value usually means the sample is pure gold.

Mass

Mass = Weight of the gold sample
This is the weight of the gold object measured on a scale.
Common units: grams (g) or kilograms (kg).

Volume

Volume = Volume of water displaced by the gold sample
For irregular shapes, use the water displacement method:

1. Fill a measuring cup or graduated cylinder with a known amount of water (Initial Volume).
2. Submerge the gold piece completely.
3. Record the new water level (Final Volume).
4. Volume = Final Volume − Initial Volume

Common units: cubic centimeters (cm³) or milliliters (mL).
Note: 1 cm³ = 1 mL.

Gold Density Reference Table

Gold Purity	Density (g/cm³)	Density (kg/m³)
24K (Pure)	19.3	19300
22K	17.7–17.8	17700–17800
18K	15.2–15.9	15200–15900
14K	12.9–14.6	12900–14600
10K	11.0–11.6	11000–11600

This table helps you quickly compare your calculated density with standard values to check purity without needing to calculate every time.

Example

Suppose you have a gold sample weighing 38.6 g.

You measure water displacement and find:

Initial Volume = 10.0 mL
Final Volume = 12.0 mL

Volume = 12.0 − 10.0 = 2.0 cm³

Now, use the formula:

Density = 38.6 g / 2.0 cm³ = 19.3 g/cm³

Result: The density matches pure gold, so the sample is likely 24K gold.

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