Mass per volume density.
Grams per Cubic Millimeter to Long tons per Cubic foot Converter — g/mm3 to long ton/ft3
Convert Gram per Cubic Millimeter (g/mm3) to Long ton per Cubic foot (long ton/ft3) using the exact conversion factor (1 gram per cubic millimeter = 27.86962526 long ton per cubic foot). See the formula, worked examples, and conversion table.
Grams per Cubic Millimeter to Long tons per Cubic foot converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 1e+6 / 35881.35796.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cubic Millimeter to Long tons per Cubic foot
Gram per Cubic Millimeter and Long ton per Cubic foot 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
long tons per cubic foot = grams per cubic millimeter × 27.8696252572
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic millimeter equals 1000000 base units, and 1 long ton per cubic foot equals 35881.3579577 base units, so dividing one by the other gives the direct gram per cubic millimeter-to-long ton per cubic foot factor of 27.8696252572.
Simple example
1 g/mm3 × 27.86962526 = 27.86962526 long ton/ft3
1 gram per cubic millimeter = 27.86962526 long tons per cubic foot.
Real-world example
1,000 g/mm3 × 27.86962526 = 27,869.62526 long ton/ft3
1,000 grams per cubic millimeter = 27,869.62526 long tons per cubic foot.
Conversion table
| Gram per Cubic Millimeter (g/mm3) | Long ton per Cubic foot (long ton/ft3) |
|---|---|
| 0.1 g/mm3 | 2.786962526 long ton/ft3 |
| 1 g/mm3 | 27.86962526 long ton/ft3 |
| 10 g/mm3 | 278.6962526 long ton/ft3 |
| 100 g/mm3 | 2,786.962526 long ton/ft3 |
| 1,000 g/mm3 | 27,869.62526 long ton/ft3 |
| 10,000 g/mm3 | 278,696.2526 long ton/ft3 |
Reverse conversion: Long ton per Cubic foot to Gram per Cubic Millimeter
27.86962526 long ton/ft3 × 0.03588135796 = 1 g/mm3
27.86962526 long tons per cubic foot = 1 grams per cubic millimeter.
grams per cubic millimeter = long tons per cubic foot × 0.0358813579577
For a page dedicated to this direction, see Long ton per Cubic foot to Gram per Cubic Millimeter.
Understanding the Gram per Cubic Millimeter (g/mm3)
Mass per volume density.
Understanding the Long ton per Cubic foot (long ton/ft3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per cubic foot are in 1 gram per cubic millimeter?
1 gram per cubic millimeter equals 27.86962526 long tons per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic millimeter to long ton per cubic foot?
Multiply the gram per cubic millimeter value by 27.86962526. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cubic foot back to gram per cubic millimeter?
Use the reverse factor: 1 long ton per cubic foot equals 0.035881358 grams per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic millimeter?
Gram per Cubic Millimeter (g/mm3) is a unit of density.
What is a long ton per cubic foot?
Long ton per Cubic foot (long ton/ft3) is a unit of density.
Is the gram per cubic millimeter to long ton per cubic foot conversion exact?
Yes. Both gram per cubic millimeter and long ton per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 27.86962526 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.