Understanding ounces per cubic inch to grams per cubic centimeter Conversion
The ounce per cubic inch (oz/in³) is a US customary density unit expressing mass in avoirdupois ounces per cubic inch of volume. The gram per cubic centimetre (g/cm³) is the CGS density unit — numerically equal to the density of water at 4 °C being about 1 g/cm³ — and is the everyday reference in chemistry, metallurgy, and materials science. This conversion lets engineers translate US customary material densities into metric values used in scientific work.
Conversion Formula
To convert ounces per cubic inch to grams per cubic centimeter, multiply by this factor:
Step-by-Step Example
Convert 25 ounces per cubic inch to grams per cubic centimeter.
How to Convert ounces per cubic inch to grams per cubic centimeter
Convert a US customary density into the metric g/cm³ used in science.
- Take your density in oz/in³: Note the value you want to convert.
- Multiply by the factor: Multiply by 1.729994, the number of g/cm³ per oz/in³.
- Record in g/cm³: The product is the density in grams per cubic centimetre.
- Worked result: 25 oz/in³ × 1.729994 = 43.2499 g/cm³.
ounces per cubic inch to grams per cubic centimeter conversion table
| ounces per cubic inch (oz/in3) | grams per cubic centimeter (g/cm3) |
|---|---|
| 0 | 0 |
| 1 | 1.729994 |
| 2 | 3.459988 |
| 3 | 5.189982 |
| 4 | 6.919976 |
| 5 | 8.64997 |
| 6 | 10.37996 |
| 7 | 12.10996 |
| 8 | 13.83995 |
| 9 | 15.56995 |
| 10 | 17.29994 |
| 15 | 25.94991 |
| 20 | 34.59988 |
| 25 | 43.24985 |
| 30 | 51.89982 |
| 40 | 69.19976 |
| 50 | 86.4997 |
| 60 | 103.7996 |
| 70 | 121.0996 |
| 80 | 138.3995 |
| 90 | 155.6995 |
| 100 | 172.9994 |
| 150 | 259.4991 |
| 200 | 345.9988 |
| 250 | 432.4985 |
| 300 | 518.9982 |
| 400 | 691.9976 |
| 500 | 864.997 |
| 600 | 1037.996 |
| 700 | 1210.996 |
| 800 | 1383.995 |
| 900 | 1556.995 |
| 1000 | 1729.994 |
| 2000 | 3459.988 |
| 3000 | 5189.982 |
| 4000 | 6919.976 |
| 5000 | 8649.97 |
| 10000 | 17299.94 |
| 25000 | 43249.85 |
| 50000 | 86499.7 |
| 100000 | 172999.4 |
| 250000 | 432498.5 |
| 500000 | 864997 |
| 1000000 | 1729994 |
What is the Ounce per Cubic Inch?
The ounce per cubic inch is a unit of density in the imperial and US customary systems, expressing the mass in avoirdupois ounces contained in one cubic inch of a substance. It is used mainly in engineering and materials work where both mass and volume are stated in customary units.
Definition
One ounce per cubic inch equals the mass of one avoirdupois ounce (28.349523125 g) divided by the volume of one cubic inch (16.387064 cm³).
Because one cubic inch is defined exactly as 16.387064 cm³ and one avoirdupois ounce as exactly 28.349523125 g, the conversion is exact: 1 oz/in³ = 1.72999 g/cm³ = 1729.99 kg/m³. This should not be confused with the fluid-ounce-based densities used for liquids.
Origin and History
The unit derives from the avoirdupois ounce, standardized in England and later fixed to the metric system when the international yard and pound were defined in 1959 (1 pound = 0.45359237 kg exactly, hence 1 ounce = 1/16 pound). Combining this mass with the cubic inch produced a natural density measure for machinists and metallurgists working in inches.
Law and Notable Facts
The ounce per cubic inch is a derived unit with no independent legal definition; it follows automatically from the exact definitions of the avoirdupois ounce and the international inch. Because 1 oz/in³ ≈ 1.73 g/cm³, it produces conveniently sized numbers for dense materials.
Real-World Examples and Conversions
- Water (1.000 g/cm³) is about 0.578 oz/in³.
- Aluminium (2.70 g/cm³) is roughly 1.56 oz/in³.
- Steel (about 7.85 g/cm³) is close to 4.54 oz/in³.
- Lead (11.34 g/cm³) is about 6.55 oz/in³.
What is the Gram per Cubic Centimeter?
The gram per cubic centimetre is a metric unit of density widely used in chemistry, materials science, and geology because most solids and liquids have convenient single- or double-digit values in these units.
Definition
One gram per cubic centimetre is one gram of mass in a volume of one cubic centimetre. Since a cubic centimetre is one millionth of a cubic metre and a gram is one thousandth of a kilogram, the unit equals exactly 1000 kilograms per cubic metre.
It is numerically identical to the gram per millilitre and to the tonne per cubic metre.
Origin and History
The unit arose from the centimetre-gram-second (CGS) system introduced in the 19th century, in which it was the standard measure of density. It was historically anchored to water: the gram was originally defined so that one cubic centimetre of water at maximum density weighed almost exactly one gram, giving water a density near 1 g/cm³.
Law and Notable Facts
Though CGS has been superseded by SI, the gram per cubic centimetre remains the everyday unit for tabulating densities of materials. A substance with density less than 1 g/cm³ floats on water while a denser one sinks. Osmium and iridium, the densest naturally occurring elements, sit around 22.6 g/cm³.
Real-World Examples and Conversions
- Water at 4 °C: about 1.000 g/cm³ (1000 kg/m³).
- Aluminium: about 2.70 g/cm³; iron: about 7.87 g/cm³.
- Gold: about 19.3 g/cm³ (19300 kg/m³).
- 1 g/cm³ = 1000 kg/m³ = 1 g/mL = 1 kg/L.
Frequently Asked Questions
How many grams per cubic centimetre is one ounce per cubic inch?
One ounce per cubic inch equals about 1.729994 g/cm³, reflecting the ratio of the avoirdupois ounce (28.3495 g) to the cubic inch (16.3871 cm³).
How do I convert oz/in³ to g/cm³?
Multiply the oz/in³ value by 1.729994. For example, 10 oz/in³ × 1.729994 ≈ 17.2999 g/cm³.
How do I convert g/cm³ back to oz/in³?
Multiply the g/cm³ value by 0.5780367. So 7.87 g/cm³ (steel) ≈ 4.549 oz/in³.
Is g/cm³ the same as g/mL?
Yes, for practical purposes: one cubic centimetre equals one millilitre, so g/cm³ and g/mL are numerically identical densities.
When is this conversion useful?
It helps when a US-sourced material spec gives density in oz/in³ but a scientific or metric engineering calculation needs g/cm³.
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Complete ounces per cubic inch conversion table
| Unit | Result |
|---|---|
| kilograms per cubic meter (kg/m3) | 1729.994 kg/m3 |
| grams per cubic centimeter (g/cm3) | 1.729994 g/cm3 |
| grams per milliliter (g/mL) | 1.729994 g/mL |
| grams per liter (g/L) | 1729.994 g/L |
| milligrams per milliliter (mg/mL) | 1729.994 mg/mL |
| kilograms per liter (kg/L) | 1.729994 kg/L |
| tonnes per cubic meter (t/m3) | 1.729994 t/m3 |
| pounds per cubic foot (lb/ft3) | 108 lb/ft3 |
| pounds per cubic inch (lb/in3) | 0.0625 lb/in3 |
| pounds per cubic yard (lb/yd3) | 2916 lb/yd3 |
| pounds per US gallon (lb/gal) | 14.4375 lb/gal |
| ounces per US gallon (oz/gal) | 231 oz/gal |
| slugs per cubic foot (slug/ft3) | 3.356743 slug/ft3 |