Mass per volume density.
Kilograms per Cubic Meter to Long tons per Cubic foot Converter — kg/m3 to long ton/ft3
Convert Kilogram per Cubic Meter (kg/m3) to Long ton per Cubic foot (long ton/ft3) using the exact conversion factor (1 kilogram per cubic meter = 0.0000278696 long ton per cubic foot). See the formula, worked examples, conversion table, and common uses.
Kilograms per Cubic Meter 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 1 / 35881.35796.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilograms per Cubic Meter to Long tons per Cubic foot
Kilogram per Cubic Meter 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. Kilogram per Cubic Meter is most often used for physics and engineering reference density values.
Formula
long tons per cubic foot = kilograms per cubic meter × 0.0000278696252572
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram per cubic meter equals 1 base unit, and 1 long ton per cubic foot equals 35881.3579577 base units, so dividing one by the other gives the direct kilogram per cubic meter-to-long ton per cubic foot factor of 0.0000278696252572.
Simple example
1 kg/m3 × 0.00002786962526 = 0.0000278696 long ton/ft3
1 kilogram per cubic meter = 0.0000278696 long tons per cubic foot.
Real-world example
1,000 kg/m3 × 0.00002786962526 = 0.0278696253 long ton/ft3
1,000 kilograms per cubic meter = 0.0278696253 long tons per cubic foot.
Conversion table
| Kilogram per Cubic Meter (kg/m3) | Long ton per Cubic foot (long ton/ft3) |
|---|---|
| 0.1 kg/m3 | 0.000002787 long ton/ft3 |
| 1 kg/m3 | 0.0000278696 long ton/ft3 |
| 10 kg/m3 | 0.0002786963 long ton/ft3 |
| 100 kg/m3 | 0.0027869625 long ton/ft3 |
| 1,000 kg/m3 | 0.0278696253 long ton/ft3 |
| 10,000 kg/m3 | 0.2786962526 long ton/ft3 |
Reverse conversion: Long ton per Cubic foot to Kilogram per Cubic Meter
0.0000278696 long ton/ft3 × 35881.35796 = 0.9999990937 kg/m3
0.0000278696 long tons per cubic foot = 0.9999990937 kilograms per cubic meter.
kilograms per cubic meter = long tons per cubic foot × 35881.3579577
For a page dedicated to this direction, see Long ton per Cubic foot to Kilogram per Cubic Meter.
Understanding the Kilogram per Cubic Meter
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
Where it's used: Universal — the official SI unit for density, used throughout physics and engineering worldwide
kg/m³ vs. g/L vs. kg/L. All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Uses of the Kilogram per Cubic Meter today
- Physics and engineering reference density values
- Material property tables in scientific literature
- Fluid dynamics and structural engineering calculations
Understanding the Long ton per Cubic foot (long ton/ft3)
Mass per volume density.
Kilogram per Cubic Meter — sources
- BIPM SI Brochure, 9th edition — Kilogram per cubic meter as the SI coherent derived unit for 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 kilogram per cubic meter?
1 kilogram per cubic meter equals 0.0000278696 long tons per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram per cubic meter to long ton per cubic foot?
Multiply the kilogram per cubic meter value by 0.00002786962526. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cubic foot back to kilogram per cubic meter?
Use the reverse factor: 1 long ton per cubic foot equals 35,881.35796 kilograms per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram per cubic meter?
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
What is a long ton per cubic foot?
Long ton per Cubic foot (long ton/ft3) is a unit of density.
Is the kilogram per cubic meter to long ton per cubic foot conversion exact?
Yes. Both kilogram per cubic meter and long ton per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 0.00002786962526 used above is exact to as many digits as you choose to display.
What is the difference between kg/m³ vs. g/l vs. kg/l?
All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Where is the kilogram per cubic meter still used today?
Universal — the official SI unit for density, used throughout physics and engineering worldwide