Density Unit Converter – kg/m³, g/cm³, lb/ft³, SG

Density Unit Converter

Convert density between kg/m³, g/cm³, lb/ft³, and specific gravity (SG) with IAPWS accuracy.

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Conversion Factors

Unit	To kg/m³	From kg/m³
g/cm³	× 1000	÷ 1000
lb/ft³	× 16.0185	÷ 16.0185
SG	× 999.97 (@4°C)	÷ 999.97

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Water Density Quick Table

Temp (°C)	ρ (kg/m³)	SG
4	1000.0	1.000
20	998.2	0.998
100	958.4	0.958

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Engineering Examples

1. Mass Flow
   Volumetric flow 10 m³/h at 80 °C → $\dot{m} = 971.8 \times 10 = 9718 \, \mathrm{kg/h}$

2. Tank Inventory
   Level = 2 m, Area = 5 m² → Volume = 10 m³ → Mass = 9982 kg at 20 °C

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Quick Reference

kg/m³	g/cm³	lb/ft³	SG
1000	1.000	62.43	1.00
800	0.800	49.94	0.80
1200	1.200	74.91	1.20

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Pro Tip: Use temperature-corrected density for mass balance accuracy.