Convert lb/yd³ to kg/m³ Instantly
Use this Pounds per Cubic Yard to Kilograms per Cubic Meter converter to convert density from lb/yd³ into kg/m³ accurately. Enter any density value, reverse the conversion, calculate density from mass and volume, or compare common construction and material-density units.
Convert pounds per cubic yard to kilograms per cubic meter, reverse the conversion, calculate density from mass and volume, or compare several useful 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 also shows the equivalent lb/yd³ value for comparison.
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.
Pounds per cubic yard (lb/yd³) and kilograms per cubic meter (kg/m³) both describe density: the amount of mass contained in a unit of volume. The units look very different because one uses pounds and cubic yards while the other uses kilograms and cubic meters, but they can represent exactly the same physical density.
To convert pounds per cubic yard to kilograms per cubic meter, multiply the lb/yd³ value by 0.5932764213. This factor accounts for both parts of the compound unit. It converts pounds to kilograms and also converts the cubic-yard volume basis into cubic meters.
Example: 4,000 lb/yd³ × 0.5932764213 = 2,373.105685 kg/m³.
Example: 2,400 kg/m³ × 1.6855549356 = 4,045.331845 lb/yd³.
The factor comes from exact international unit definitions. One avoirdupois pound is exactly 0.45359237 kilogram, and one international yard is exactly 0.9144 meter. Because the denominator is cubic, the yard-to-meter relationship is cubed before the mass-per-volume conversion is completed.
Use this lb/yd³ to kg/m³ conversion chart for quick density comparisons involving concrete, aggregate, soil, stone, asphalt, fill, powders and other bulk materials. For precise project work, enter the source value in the calculator above so you can retain the required number of decimal places.
| Pounds per Cubic Yard | Kilograms per Cubic Meter | Pounds per Cubic Foot | Grams per Cubic Centimeter |
|---|---|---|---|
| 1 lb/yd³ | 0.593276 kg/m³ | 0.037037 lb/ft³ | 0.000593 g/cm³ |
| 10 lb/yd³ | 5.932764 kg/m³ | 0.37037 lb/ft³ | 0.005933 g/cm³ |
| 50 lb/yd³ | 29.663821 kg/m³ | 1.851852 lb/ft³ | 0.029664 g/cm³ |
| 100 lb/yd³ | 59.327642 kg/m³ | 3.703704 lb/ft³ | 0.059328 g/cm³ |
| 250 lb/yd³ | 148.319105 kg/m³ | 9.259259 lb/ft³ | 0.148319 g/cm³ |
| 500 lb/yd³ | 296.638211 kg/m³ | 18.518519 lb/ft³ | 0.296638 g/cm³ |
| 750 lb/yd³ | 444.957316 kg/m³ | 27.777778 lb/ft³ | 0.444957 g/cm³ |
| 1,000 lb/yd³ | 593.276421 kg/m³ | 37.037037 lb/ft³ | 0.593276 g/cm³ |
| 1,500 lb/yd³ | 889.914632 kg/m³ | 55.555556 lb/ft³ | 0.889915 g/cm³ |
| 2,000 lb/yd³ | 1,186.552843 kg/m³ | 74.074074 lb/ft³ | 1.186553 g/cm³ |
| 2,500 lb/yd³ | 1,483.191053 kg/m³ | 92.592593 lb/ft³ | 1.483191 g/cm³ |
| 3,000 lb/yd³ | 1,779.829264 kg/m³ | 111.111111 lb/ft³ | 1.779829 g/cm³ |
| 3,500 lb/yd³ | 2,076.467474 kg/m³ | 129.62963 lb/ft³ | 2.076467 g/cm³ |
| 4,000 lb/yd³ | 2,373.105685 kg/m³ | 148.148148 lb/ft³ | 2.373106 g/cm³ |
| 4,500 lb/yd³ | 2,669.743896 kg/m³ | 166.666667 lb/ft³ | 2.669744 g/cm³ |
| 5,000 lb/yd³ | 2,966.382106 kg/m³ | 185.185185 lb/ft³ | 2.966382 g/cm³ |
1,500 × 0.5932764213 = 889.914632 kg/m³. This can be useful for lighter bulk materials or loose aggregate specifications.
3,500 × 0.5932764213 = 2,076.467474 kg/m³. The physical material has not changed; only the density units have.
4,000 × 0.5932764213 = 2,373.105685 kg/m³. Keeping extra digits until the end reduces rounding error.
4,500 × 0.5932764213 = 2,669.743896 kg/m³. Round the final value to match the precision of the original data.
The mass unit changes from pounds to kilograms while the volume basis changes from cubic yards to cubic meters.
Both units measure mass density, meaning mass divided by volume. Pounds per cubic yard is common when bulk quantities are discussed in US customary units, especially when materials are purchased, hauled, placed or estimated by the cubic yard. Kilograms per cubic meter is the coherent SI-derived expression widely used in engineering, science, manufacturing, material data sheets and international specifications.
A density of 4,000 lb/yd³ means one cubic yard of a uniform material would have a mass of 4,000 pounds. Converting that value to about 2,373.106 kg/m³ does not make the material heavier or lighter. It simply expresses the same density using kilograms and cubic meters.
Density is different from total mass. Once density is known, total mass can be estimated by multiplying the density by a compatible volume. For example, kg/m³ should be multiplied by m³ if the desired mass is kilograms.
The conversion factor is built from the exact international pound and yard definitions. One pound equals exactly 0.45359237 kilogram. One yard equals exactly 0.9144 meter, so one cubic yard equals 0.9144³ cubic meter. Dividing the kilogram mass represented by one pound by the cubic-meter volume represented by one cubic yard gives the density factor.
Multiply any lb/yd³ value by this factor to convert it directly to kg/m³.
For authoritative unit information, see the NIST Guide to SI conversion factors and the BIPM measurement-units resources.
Construction projects often combine US customary estimating units with metric technical specifications. A supplier, hauling ticket or historical document may report density in pounds per cubic yard, while an engineering calculation, laboratory report or international product sheet expects kilograms per cubic meter. Converting the density lets the values be compared consistently.
For example, 4,000 lb/yd³ converts to approximately 2,373.106 kg/m³. If a project contains 3 m³ of material at that density, a simplified mass estimate would be about 7,119.317 kg. Actual field values can differ because moisture content, entrained air, compaction, gradation and composition influence density.
Always use the density that matches the material condition stated in your source. Loose aggregate density, compacted density, wet density, dry density and particle density can be very different even for the same general material.
Bulk density includes the void space between particles and is often the practical value used for aggregate, soil, powders, stockpiles and other bulk materials. Particle density describes the material of the individual particles and excludes the larger spaces between separate pieces.
The converter changes units only. It does not determine whether an entered value is loose, compacted, saturated, dry, bulk or particle density. Preserve the original condition label whenever you copy a converted value into a project calculation or specification.
In everyday construction language, density and unit weight are sometimes used loosely. Strictly speaking, mass density is mass per unit volume, while weight density is force per unit volume. Values written in lb/yd³ are commonly handled as mass-related quantities in estimating contexts, but engineering documents may apply more precise terminology.
For structural design, legal metrology or scientific work, follow the unit conventions required by the governing standard or engineer. This page is intended for ordinary mass-density conversion between lb/yd³ and kg/m³.
For the reverse conversion, multiply kg/m³ by approximately 1.6855549356. This is the reciprocal of the primary lb/yd³-to-kg/m³ factor.
Example: 2,000 kg/m³ × 1.6855549356 ≈ 3,371.110 lb/yd³.
You can use the second calculator tab above for this reverse conversion. For a dedicated page, open our Kilograms per Cubic Meter to Pounds per Cubic Yard converter.
Changing lb to kg without changing yd³ to m³ leaves the denominator in the wrong unit.
The denominator is cubic volume, so the yard-to-meter factor must be cubed.
One cubic yard contains 27 cubic feet, so 1 lb/yd³ equals only 1/27 lb/ft³.
Keep several significant digits through intermediate steps and round the final result to suit the source data.
Continue with our Kilograms per Cubic Meter to Pounds per Cubic Yard converter, Pounds per Cubic Foot to Kilograms per Cubic Meter converter, Kilograms per Cubic Meter to Pounds per Cubic Foot converter, Tons per Cubic Yard to Pounds per Cubic Yard converter and Metric Tons per Cubic Meter to Kilograms per Cubic Meter converter.
Quick answers about lb/yd³, kg/m³, density formulas, common values and reverse conversion.