Troy ounces per Cubic Millimeter to Grains per Cubic Millimeter Converter — oz t/mm3 to gr/mm3

Convert Troy ounce per Cubic Millimeter (oz t/mm3) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 troy ounce per cubic millimeter = 480 grain per cubic millimeter). See the formula, worked examples, and conversion table.

Converter

Density Converter

Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.

Result 1 troy ounce per cubic millimeter = 480 grain per cubic millimeter
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From definition

Mass per volume density.

To definition

Mass per volume density.

Formula

Result = input x 3.11034768e+7 / 64798.91.

Density uses kilograms per cubic meter as the base unit.

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About Converting Troy ounces per Cubic Millimeter to Grains per Cubic Millimeter

Troy ounce per Cubic Millimeter and Grain per Cubic Millimeter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.

Formula

grains per cubic millimeter = troy ounces per cubic millimeter × 480

This factor comes from each unit's defined relationship to the category's base unit: 1 troy ounce per cubic millimeter equals 31103476.8 base units, and 1 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct troy ounce per cubic millimeter-to-grain per cubic millimeter factor of 480.

Simple example

1 oz t/mm3 × 480 = 480 gr/mm3

1 troy ounce per cubic millimeter = 480 grains per cubic millimeter.

Real-world example

1,000 oz t/mm3 × 480 = 480,000 gr/mm3

1,000 troy ounces per cubic millimeter = 480,000 grains per cubic millimeter.

Conversion table

Troy ounce per Cubic Millimeter (oz t/mm3)Grain per Cubic Millimeter (gr/mm3)
0.1 oz t/mm348 gr/mm3
1 oz t/mm3480 gr/mm3
10 oz t/mm34,800 gr/mm3
100 oz t/mm348,000 gr/mm3
1,000 oz t/mm3480,000 gr/mm3
10,000 oz t/mm34,800,000 gr/mm3

Reverse conversion: Grain per Cubic Millimeter to Troy ounce per Cubic Millimeter

480 gr/mm3 × 0.002083333333 = 1 oz t/mm3

480 grains per cubic millimeter = 1 troy ounces per cubic millimeter.

troy ounces per cubic millimeter = grains per cubic millimeter × 0.00208333333333

For a page dedicated to this direction, see Grain per Cubic Millimeter to Troy ounce per Cubic Millimeter.

Understanding the Troy ounce per Cubic Millimeter (oz t/mm3)

Mass per volume density.

Understanding the Grain per Cubic Millimeter (gr/mm3)

Mass per volume density.

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Frequently asked questions

How many grains per cubic millimeter are in 1 troy ounce per cubic millimeter?

1 troy ounce per cubic millimeter equals 480 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.

How do I convert troy ounce per cubic millimeter to grain per cubic millimeter?

Multiply the troy ounce per cubic millimeter value by 480. The converter above does this instantly to whatever precision you set.

How do I convert grain per cubic millimeter back to troy ounce per cubic millimeter?

Use the reverse factor: 1 grain per cubic millimeter equals 0.0020833333 troy ounces per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.

What is a troy ounce per cubic millimeter?

Troy ounce per Cubic Millimeter (oz t/mm3) is a unit of density.

What is a grain per cubic millimeter?

Grain per Cubic Millimeter (gr/mm3) is a unit of density.

Is the troy ounce per cubic millimeter to grain per cubic millimeter conversion exact?

Yes. Both troy ounce per cubic millimeter and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 480 used above is exact to as many digits as you choose to display.

What's the difference between density and mass concentration?

Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.