Density Converter – Convert kg/m³, g/cm³ & lb/ft³

This density unit converter routes every input through exact definitions — 1 g/cm³ = 1000 kg/m³ exactly (water = 1000 kg/m³). Enter a value, pick the source and target units, and the result appears instantly with the factor applied shown beside it. Density divides mass by volume — kilograms per cubic meter in SI, grams per cubic centimeter in the lab, pounds per cubic foot in US drawings. The metric ladder is exact: water rings in at 1 g/cm³ = 1000 kg/m³, and every kg/m³ ↔ g/cm³ conversion divides or multiplies by exactly 1000. A mini table of the head factor makes spot-checks immediate: 1 g/cm³ = 1,000 kg/m³; 5 g/cm³ = 5,000 kg/m³; 10 g/cm³ = 10,000 kg/m³; 50 g/cm³ = 50,000 kg/m³; 100 g/cm³ = 100,000 kg/m³. Anchors: freshwater is 1000 kg/m³, seawater about 1025, steel near 7850, and gold 19,300 — four numbers that bracket most materials you will ever weigh.

1. 1

   Step 1

   Enter the value you want to convert

2. 2

   Step 2

   Select the source unit you are converting from

3. 3

   Step 3

   Select the target unit you want as the result

4. 4

   Step 4

   Read the exact result, then swap or copy as needed

• 1

  1 g/cm³ = 1000 kg/m³ = 62.43 lb/ft³ — the water triple anchor

• 2

  Multiply g/cm³ by 1000 for SI paperwork, divide for lab shorthand

• 3

  Material check: oils ~0.9 g/cm³ float on water; metals sink

• 4

  Temperature matters above the third decimal for oils and fuels

• Confusing density (mass/volume) with specific gravity (ratio, unitless)

• Using lb/ft³ where lb/in³ is quoted — a factor of 1728 apart

• Forgetting temperature: densities drift as materials expand