Convert kg/m³ to lb/yd³ Instantly
Use this Kilograms per Cubic Meter to Pounds per Cubic Yard converter to change density from kg/m³ into lb/yd³ with accurate results. Enter any density value, reverse the conversion, calculate density from mass and volume, or compare several common construction and material-density units.
Convert metric density to pounds per cubic yard, reverse the conversion, calculate density from mass and volume, or compare common density units.
Enter density in kilograms per cubic meter to calculate pounds per cubic yard and related units.
Use any non-negative decimal density value.
Reverse the conversion using 1 lb/yd³ = 0.5932764213 kg/m³.
Enter mass in kilograms and volume in cubic meters. The calculator finds density in kg/m³ and converts it to lb/yd³.
Enter one density value and select its unit to convert among kg/m³, lb/yd³, lb/ft³, g/cm³ and metric tons per cubic meter.
Density describes how much mass is contained in a given volume. A value in kilograms per cubic meter (kg/m³) tells you how many kilograms of mass occupy one cubic meter. A value in pounds per cubic yard (lb/yd³) expresses the same physical density using pounds for mass and cubic yards for volume.
Because both parts of the unit change, this is not a simple kilogram-to-pound conversion. The cubic-meter denominator must also be converted to cubic yards. Using the international yard and avoirdupois pound definitions gives a conversion factor of approximately 1.6855549356.
Example: 2,400 kg/m³ × 1.6855549356 = 4,045.331845 lb/yd³.
Example: 4,000 lb/yd³ × 0.5932764213 = 2,373.105685 kg/m³.
The conversion is built from standard mass and length relationships. NIST lists the international yard as exactly 0.9144 meter and the avoirdupois pound as 0.45359237 kilogram. Cubing the yard-to-meter relationship gives the cubic-volume relationship used in the density factor.
Use this table for quick reference when comparing material densities, aggregate specifications, concrete mix information, soil data or bulk-material measurements.
| kg/m³ | lb/yd³ | lb/ft³ | g/cm³ |
|---|---|---|---|
| 1 kg/m³ | 1.685555 lb/yd³ | 0.062428 lb/ft³ | 0.001 g/cm³ |
| 10 kg/m³ | 16.855549 lb/yd³ | 0.624280 lb/ft³ | 0.010 g/cm³ |
| 50 kg/m³ | 84.277747 lb/yd³ | 3.121398 lb/ft³ | 0.050 g/cm³ |
| 100 kg/m³ | 168.555494 lb/yd³ | 6.242796 lb/ft³ | 0.100 g/cm³ |
| 250 kg/m³ | 421.388734 lb/yd³ | 15.606990 lb/ft³ | 0.250 g/cm³ |
| 500 kg/m³ | 842.777468 lb/yd³ | 31.213980 lb/ft³ | 0.500 g/cm³ |
| 750 kg/m³ | 1,264.166202 lb/yd³ | 46.820970 lb/ft³ | 0.750 g/cm³ |
| 1,000 kg/m³ | 1,685.554936 lb/yd³ | 62.427961 lb/ft³ | 1.000 g/cm³ |
| 1,200 kg/m³ | 2,022.665923 lb/yd³ | 74.913553 lb/ft³ | 1.200 g/cm³ |
| 1,500 kg/m³ | 2,528.332403 lb/yd³ | 93.641941 lb/ft³ | 1.500 g/cm³ |
| 1,800 kg/m³ | 3,033.998884 lb/yd³ | 112.370329 lb/ft³ | 1.800 g/cm³ |
| 2,000 kg/m³ | 3,371.109871 lb/yd³ | 124.855921 lb/ft³ | 2.000 g/cm³ |
| 2,200 kg/m³ | 3,708.220858 lb/yd³ | 137.341513 lb/ft³ | 2.200 g/cm³ |
| 2,400 kg/m³ | 4,045.331845 lb/yd³ | 149.827105 lb/ft³ | 2.400 g/cm³ |
| 2,500 kg/m³ | 4,213.887339 lb/yd³ | 156.069901 lb/ft³ | 2.500 g/cm³ |
| 3,000 kg/m³ | 5,056.664807 lb/yd³ | 187.283882 lb/ft³ | 3.000 g/cm³ |
| 3,500 kg/m³ | 5,899.442274 lb/yd³ | 218.497862 lb/ft³ | 3.500 g/cm³ |
| 4,000 kg/m³ | 6,742.219742 lb/yd³ | 249.711842 lb/ft³ | 4.000 g/cm³ |
500 × 1.6855549356 = 842.777 lb/yd³.
1,000 × 1.6855549356 = 1,685.555 lb/yd³.
2,000 × 1.6855549356 = 3,371.110 lb/yd³.
2,400 × 1.6855549356 = 4,045.332 lb/yd³.
Multiply 1,600 by the density conversion factor. The result is about 2,696.888 lb/yd³. Keeping additional digits during the calculation can be useful when the original specification is precise, while final reporting may round to the number of significant figures appropriate for the material data.
For a density of 2,350 kg/m³, the converted value is about 3,961.054 lb/yd³. This kind of conversion is common when metric material data must be compared with specifications, estimating systems or supplier documents that use pounds and cubic yards.
The mass unit changes from kilograms to pounds while the volume basis changes from cubic meters to cubic yards.
Both kg/m³ and lb/yd³ measure mass density: mass divided by volume. Kilograms per cubic meter is an SI-derived expression commonly used in science, engineering, construction, manufacturing and material specifications. Pounds per cubic yard is a customary-unit density that is especially intuitive when quantities are bought, placed or hauled by the cubic yard.
A density of 1,000 kg/m³ means that one cubic meter of the material has a mass of 1,000 kilograms. Expressing the same density in lb/yd³ answers a different-looking but equivalent question: how many pounds would one cubic yard of that material have, assuming the density is uniform?
Density should not be confused with total weight. A material may have a fixed density, but the total mass or weight changes with the amount of material. To estimate total mass, multiply density by volume using compatible units.
The numerical factor comes from converting both pieces of the compound density unit. The international yard is exactly 0.9144 meter, so one cubic yard equals 0.9144³ cubic meter. The international avoirdupois pound is exactly 0.45359237 kilogram. Combining those relationships produces the density conversion factor used by this page.
This factor converts the numerical value from kg/m³ directly into lb/yd³.
For authoritative unit information, see the NIST Guide to the SI conversion factors and the BIPM SI measurement-units resources.
Construction specifications often mix metric and US customary units. A concrete density may be listed in kg/m³ in a technical document while estimating, hauling or ordering systems use pounds and cubic yards. Converting the density allows the same material property to be compared without changing the underlying physical quantity.
For example, a nominal density around 2,400 kg/m³ converts to roughly 4,045.33 lb/yd³. If you are estimating the mass of several cubic yards, multiply the density in lb/yd³ by the number of cubic yards. Five cubic yards at 4,045.33 lb/yd³ would represent about 20,226.66 lb of mass, before considering any project-specific moisture, air content, material variation or waste assumptions.
The same principle applies to aggregates, soils, asphalt-related materials, masonry products and other bulk materials. However, actual field density can vary substantially with gradation, compaction, moisture content, porosity and composition. Treat a published density as a property of the stated condition, not as a universal value for every sample.
Bulk density includes the void spaces between particles in a bulk material. It is often the relevant value for stockpiles, aggregates, soils, powders and materials handled by container volume. Particle density describes the density of the solid particles themselves and generally excludes the larger voids between separate particles.
This distinction matters because two values can both be reported in kg/m³ while describing different physical conditions. The converter changes units only; it cannot determine whether the source number is bulk, dry, wet, compacted, loose or particle density. Always preserve the condition stated by the original data source when converting.
In everyday construction language, people sometimes use density and unit weight interchangeably, especially when discussing pounds per cubic foot or pounds per cubic yard. Technically, mass density is mass per volume, while weight density is force per volume. In many practical estimating contexts, customary "lb" values are treated as mass-related quantities under standard Earth gravity.
If you are working on structural calculations, scientific analysis, legal metrology or another context where force and mass must be strictly distinguished, use the units specified by the applicable standard or engineer. This page is designed for ordinary mass-density conversion between kg/m³ and lb/yd³.
For the reverse conversion, multiply pounds per cubic yard by approximately 0.5932764213. This is the reciprocal of the main kg/m³-to-lb/yd³ factor.
Example: 3,500 lb/yd³ × 0.5932764213 ≈ 2,076.467 kg/m³.
The reverse calculator above performs this automatically and also shows equivalent values in pounds per cubic foot, grams per cubic centimeter and metric tons per cubic meter.
Changing kg to lb but leaving m³ unchanged does not produce lb/yd³.
Volume is cubic, so the yard-to-meter relationship must be cubed.
One cubic yard contains 27 cubic feet, so the numerical values differ by a factor of 27.
Keep extra digits during calculation, then round the final result appropriately.
For related calculations, use our Kilograms per Cubic Meter to Pounds per Cubic Foot converter, Kilograms per Cubic Meter to Metric Tons per Cubic Meter converter, and Tons per Cubic Yard to Pounds per Cubic Yard page. If your project begins with geometric dimensions rather than a density value, a volume or concrete calculator can help determine the cubic volume before mass is estimated.
Quick answers about kg/m³, lb/yd³ and density conversion.