Density Converter

Convert between density units including kilograms per cubic meter, grams per cubic centimeter, kilograms per liter, pounds per cubic foot, pounds per cubic inch, and grams per liter.

Density Converter 9 units

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Common Density Conversions

All Density Conversions

Browse all unit combinations — each page has a dedicated converter and conversion table.

mg/L → g/L mg/L → kg/m³ mg/L → g/cm³ mg/L → kg/L mg/L → lb/ft³ mg/L → lb/in³ mg/L → lb/gal (US) mg/L → t/m³ g/L → mg/L g/L → kg/m³ g/L → g/cm³ g/L → kg/L g/L → lb/ft³ g/L → lb/in³ g/L → lb/gal (US) g/L → t/m³ kg/m³ → mg/L kg/m³ → g/L kg/m³ → g/cm³ kg/m³ → kg/L kg/m³ → lb/ft³ kg/m³ → lb/in³ kg/m³ → lb/gal (US) kg/m³ → t/m³ g/cm³ → mg/L g/cm³ → g/L g/cm³ → kg/m³ g/cm³ → kg/L g/cm³ → lb/ft³ g/cm³ → lb/in³ g/cm³ → lb/gal (US) g/cm³ → t/m³ kg/L → mg/L kg/L → g/L kg/L → kg/m³ kg/L → g/cm³ kg/L → lb/ft³ kg/L → lb/in³ kg/L → lb/gal (US) kg/L → t/m³ lb/ft³ → mg/L lb/ft³ → g/L lb/ft³ → kg/m³ lb/ft³ → g/cm³ lb/ft³ → kg/L lb/ft³ → lb/in³ lb/ft³ → lb/gal (US) lb/ft³ → t/m³ lb/in³ → mg/L lb/in³ → g/L lb/in³ → kg/m³ lb/in³ → g/cm³ lb/in³ → kg/L lb/in³ → lb/ft³ lb/in³ → lb/gal (US) lb/in³ → t/m³ lb/gal (US) → mg/L lb/gal (US) → g/L lb/gal (US) → kg/m³ lb/gal (US) → g/cm³ lb/gal (US) → kg/L lb/gal (US) → lb/ft³ lb/gal (US) → lb/in³ lb/gal (US) → t/m³ t/m³ → mg/L t/m³ → g/L t/m³ → kg/m³ t/m³ → g/cm³ t/m³ → kg/L t/m³ → lb/ft³ t/m³ → lb/in³ t/m³ → lb/gal (US)

📐 How to Use

Set the From dropdown to the density unit your measurement uses and the To dropdown to the unit you need.
Enter the figure in the value field and read the converted density in the result panel, which also restates the pair in words.
Hit the swap button to flip source and target, and Copy to take the result out to a spreadsheet or report.
Pick a tile from the Common Density Conversions grid for a frequent pair, or follow a link in All Density Conversions to a page carrying a full table of stepped values.

❓ Frequently Asked Questions

QHow many kg/m³ are in 1 g/cm³?

1 g/cm³ equals 1000 kg/m³. A gram is a thousandth of a kilogram while a cubic centimeter is a millionth of a cubic meter, and the two scalings combine into a clean factor of a thousand. The same factor applies to kg/L and t/m³.

QWhat is 1 g/cm³ in lb/ft³?

1 g/cm³ is 62.428 lb/ft³, because one pound per cubic foot works out as 16.01846 kg/m³. Water therefore sits at roughly 62.4 lb/ft³, a figure used throughout US civil and HVAC calculations.

QWhich gallon does the lb/gal unit use?

The US liquid gallon, held as 119.826 kg/m³ per lb/gal. An imperial gallon is about a fifth larger, so a pounds-per-imperial-gallon reading entered here comes out roughly 20 percent too high. Convert it to US gallons first.

QCan I enter a specific gravity value?

No. Specific gravity is a density divided by a reference density, usually water, which leaves it dimensionless and outside this list. Multiply it by about 1000 kg/m³ to obtain a density, then convert that result.

ℹ️ About Density Conversion

Density is mass divided by volume, so each unit welds a mass unit to a volume unit and the combinations multiply fast. Water close to 4 °C sits near 1 g/cm³, which makes that unit a useful mental anchor and once underpinned the kilogram's definition. The traps live in the volume half: pounds per cubic inch is vastly larger than pounds per cubic foot, and a US gallon is smaller than an imperial one, so a lb/gal figure needs its system named.

This tool handles nine units through kilograms per cubic meter. Because a liter is a thousandth of a cubic meter, 1 kg/m³ and 1 g/L are the same number and both carry a factor of one. Output is trimmed to four decimals for values of 10 or more and to as many as eight below 1. Nothing is uploaded; the page computes locally.

📏 9 Supported Units

mg/L (mg/L), g/L (g/L), kg/m³ (kg/m³), g/cm³ (g/cm³), kg/L (kg/L), lb/ft³ (lb/ft³), lb/in³ (lb/in³), lb/gal (US) (lb/gal), t/m³ (t/m³).