Conversion method
Density combines mass and volume. 1 g/cm³ = 1,000 kg/m³ exactly. Converting the units does not account for changes in material temperature, pressure or composition. US gallon units use the US liquid gallon.
kg/m³ = x × 1000
10 g/cm³ = 10000 kg/m³.
| g/cm³ | kg/m³ |
|---|---|
| 1 | 1000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
Unit definitions and sources
Convert density through the shared base unit.
28 of the 35 definitions below were checked against the cited sources on 2026-09-20 (AI-assisted check).
| Unit and system | Use | Definition | Relationship |
|---|---|---|---|
| Kilogram per cubic meter (kg/m³); si | Common units | Kilogram per cubic meter measures density. kgm3 = (value in kg/m³) × 1. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Gram per cubic centimeter (g/cm³); si | Common units | Gram per cubic centimeter measures density. kgm3 = (value in g/cm³) × 1000. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Gram per milliliter (g/mL); si | Common units | Gram per milliliter measures density. kgm3 = (value in g/mL) × 1000. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Kilogram per liter (kg/L); si | Common units | Kilogram per liter measures density. kgm3 = (value in kg/L) × 1000. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Pound per cubic foot (lb/ft³); us | Common units | Pound per cubic foot measures density. kgm3 = (value in lb/ft³) × 16.018463373960138. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Pound per cubic inch (lb/in³); us | Common units | Pound per cubic inch measures density. kgm3 = (value in lb/in³) × 27679.904710203125. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Pound per US gallon (lb/gal); us | Common units | Pound per US gallon measures density. kgm3 = (value in lb/gal) × 119.82642731689663. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Kilogram/cubic centimeter (kg/(cm³)); other | Specialist units | kilogram/cubic centimeter = 1000000 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Gram/cubic meter (g/(m³)); other | Specialist units | gram/cubic meter = 0.001 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Gram/cubic millimeter (g/(mm³)); other | Specialist units | gram/cubic millimeter = 1000000.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Milligram/cubic meter (mg/(m³)); other | Specialist units | milligram/cubic meter = 1e-06 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Milligram/cubic centimeter (mg/(cm³)); other | Specialist units | milligram/cubic centimeter = 1 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Milligram/cubic millimeter (mg/(mm³)); other | Specialist units | milligram/cubic millimeter = 1000 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Exagram/liter (Eg/(L)); other | Specialist units | exagram/liter = 1e+18 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Petagram/liter (Pg/(L)); other | Specialist units | petagram/liter = 1000000000000000.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Teragram/liter (Tg/(L)); other | Specialist units | teragram/liter = 1000000000000.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Gigagram/liter (Gg/(L)); other | Specialist units | gigagram/liter = 1000000000.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Megagram/liter (Mg/(L)); other | Specialist units | megagram/liter = 1000000.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Hectogram/liter (hg/(L)); other | Specialist units | hectogram/liter = 100.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Gram/liter (g/(L)); other | Specialist units | gram/liter = 1.0 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Decigram/liter (dg/(L)); other | Specialist units | decigram/liter = 0.1 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Centigram/liter (cg/(L)); other | Specialist units | centigram/liter = 0.01 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Milligram/liter (mg/(L)); other | Specialist units | milligram/liter = 0.001 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Microgram/liter (µg/(L)); other | Specialist units | microgram/liter = 1e-06 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Nanogram/liter (ng/(L)); other | Specialist units | nanogram/liter = 1e-09 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Picogram/liter (pg/(L)); other | Specialist units | picogram/liter = 1e-12 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Femtogram/liter (fg/(L)); other | Specialist units | femtogram/liter = 1e-15 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Attogram/liter (ag/(L)); other | Specialist units | attogram/liter = 1e-18 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Pound/cubic yard (lb/(yd³)); other | Specialist units | pound/cubic yard = 0.5932764212577829 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Pound/gallon (US) (lb/(US gal)); other | Specialist units | pound/gallon (US) = 119.82642731689663 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Pound/gallon (UK) (lb/(imp gal)); other | Specialist units | pound/gallon (UK) = 99.7763726631017 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Ounce/cubic inch (oz/(in³)); other | Specialist units | ounce/cubic inch = 1729.9940443876953 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Ounce/cubic foot (oz/(ft³)); other | Specialist units | ounce/cubic foot = 1.0011539608725086 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Ounce/gallon (US) (oz/(US gal)); other | Specialist units | ounce/gallon (US) = 7.489151707306039 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
| Ounce/gallon (UK) (oz/(imp gal)); other | Specialist units | ounce/gallon (UK) = 6.236023291443856 kgm3, derived from the component SI/customary definitions. Common use: Mass per volume of a material. | Exact definition; numerical display may be rounded |
Sources: BIPM: International System of Units; NIST: SP 811 Appendix B.8: conversion factors; BIPM: SI prefixes
Precision of density conversions
All 35 density units convert through Kilogram per cubic meter (kg/m³). 35 have an exact defined relationship to the base unit and 0 are conventional or measured values. Results and the tables on this page come from the same engine, so a table value can be checked against the converter directly.
Standard display shows up to six decimal places, switching to scientific notation for very large or small values. Calculation uses JavaScript binary floating point independently of display rounding, so extra digits are not a claim about measurement accuracy. Each unit lists its own source; a citation records where the definition comes from, not an independent review. See Conversion methodology for the review and correction process.