Quick answer
Gold mass = volume × 19.32 g/cm³. A 10 cm³ piece of pure gold weighs 193.2 g, which is 6.212 troy ounces or 124.23 pennyweight.
Enter the volume and its unit. The calculator returns the mass in grams, troy ounces and pennyweights.
Related tools: Pipe Weight Calculator: Weight of a hollow round pipe from its outside diameter, wall thickness and length. Glass Weight Calculator: Weight of a glass pane from its dimensions. Metal Weight Calculator: Weight of a plate, round bar or square bar in common metals.
How to use the Gold Weight Calculator
- Enter volume (above 0).
- Choose unit: Cubic centimeters and Cubic inches.
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Volume | A number | > 0 |
| Unit | Choose one: Cubic centimeters; Cubic inches | Starts at Cubic centimeters |
Formula and method
Formula
mass = volume × 19.32 g/cm³
IEEE-754 double precision; shown to the decimals indicated.
Pure gold only; alloys are lighter. 1 troy ounce = 31.1034768 g and 1 pennyweight = 1.55517384 g.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Volume = 10; Unit = Cubic centimeters.
| Result | Value |
|---|---|
| Mass | 193.2 g |
| Troy ounces | 6.212 |
| Pennyweight | 124.23 |
Example 2
Inputs: Volume = 1; Unit = Cubic inches.
| Result | Value |
|---|---|
| Mass | 316.6 g |
| Troy ounces | 10.179 |
| Pennyweight | 203.58 |
Example 3
Inputs: Volume = 250; Unit = Cubic centimeters.
| Result | Value |
|---|---|
| Mass | 4,830 g |
| Troy ounces | 155.288 |
| Pennyweight | 3,105.76 |
The first line is the headline result (mass). Below it the gold Weight Calculator lists troy ounces and pennyweight, which describe the same case from other angles. IEEE-754 double precision; shown to the decimals indicated.
Density and alloys
Pure (24-karat) gold has a density of 19.32 g/cm³. Karat gold is an alloy with silver and copper and is lighter: 14-karat gold is around 13 to 14 g/cm³. Use this for pure gold only.
Troy units
Gold is weighed in troy ounces (31.1035 g), not ordinary ounces (28.35 g). 193.2 ÷ 31.1035 = 6.212 troy ounces. There are 20 pennyweights in a troy ounce.
How the result changes with volume
Holding every other input at the first worked example, this table changes only volume. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Volume | Mass | Troy ounces | Pennyweight |
|---|---|---|---|
| 5 | 96.6 g | 3.106 | 62.12 |
| 10 | 193.2 g | 6.212 | 124.23 |
| 20 | 386.4 g | 12.423 | 248.46 |
| 40 | 772.8 g | 24.846 | 496.92 |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Volume: entering "0" shows "Volume must be greater than 0." beside that field and no result.
Choosing between the Gold Weight Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Pipe Weight Calculator](/construction/pipe-weight/) | outside diameter, wall thickness and length | Pipe weight |
| [Glass Weight Calculator](/construction/glass-weight/) | length, width and thickness | Glass weight |
| [Metal Weight Calculator](/construction/metal-weight-calculator/) | material, shape and dimension A | Weight |
| [Rebar Weight Calculator](/construction/rebar-weight-calculator/) | bar size, length of each bar and number of bars | Total weight |
| [Money Weight Calculator](/construction/money-weight/) | denomination and amount | Weight |
Background: construction estimates
Material quantities are geometry plus a margin. Calculate the exact volume or area, add an allowance for waste, spillage, cuts and uneven ground (calculator pages commonly mention 5 to 10 percent, a rule of thumb that varies by material and job) and round up to whole units. One cubic yard is exactly 27 cubic feet.
Suppliers often have minimum order sizes and may charge for small loads, so confirm quantities, product yields and local code with your supplier or a qualified estimator before ordering.
Assumptions and limitations
- Karat gold is an alloy and weighs less
Quantities are estimates. Add allowances for waste and site conditions, and follow local codes and a qualified professional's instructions for structural or safety-critical work.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for volume to confirm this.
Frequently asked questions
How much does a cubic inch of gold weigh?
About 316.6 g (19.32 × 16.387).
Is a troy ounce heavier than a regular ounce?
Yes, about 10% heavier.
Can I check if gold is real with density?
Density is one clue, but expert testing is better.
What does the Gold Weight Calculator calculate?
Mass of pure gold from its volume. It returns Mass, Troy ounces and Pennyweight.
What formula does the Gold Weight Calculator use?
mass = volume × 19.32 g/cm³. Pure gold only; alloys are lighter.
What do I need to enter in the gold Weight Calculator?
You enter Volume and Unit.
How is the result rounded or limited?
IEEE-754 double precision; shown to the decimals indicated. Karat gold is an alloy and weighs less.
What does the “Unit” option change?
It sets how the gold Weight is worked out. The choices are Cubic centimeters and Cubic inches.
What is an example of a gold Weight result?
With volume 10 and unit Cubic centimeters, the mass is 193.2 g.
Where does the method come from?
The method follows: CRC Handbook of Chemistry and Physics (density of gold 19.32 g/cm³ at 20 °C); troy weights per NIST Handbook 44.
Can I rely on this calculator for a decision?
Quantities are estimates. Add allowances for waste and site conditions, and follow local codes and a qualified professional's instructions for structural or safety-critical work. For this calculator in particular: Karat gold is an alloy and weighs less.
Related calculators
- Pipe Weight Calculator — Weight of a hollow round pipe from its outside diameter, wall thickness and length.
- Glass Weight Calculator — Weight of a glass pane from its dimensions.
- Metal Weight Calculator — Weight of a plate, round bar or square bar in common metals.
- Rebar Weight Calculator — Weight of reinforcing bar by size and length.
- Money Weight Calculator — Weight of an amount of US bills or coins.
- Steel Plate Weight Calculator — Weight of a carbon steel plate from its dimensions.
Sources
- CRC Handbook of Chemistry and Physics (density of gold 19.32 g/cm³ at 20 °C); troy weights per NIST Handbook 44
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.