Density Converter

Convert density values between kg/m3, g/cm3, lb/ft3 and more.

Density Input

Value Unit Decimal places

Results

Enter a density to compare metric, U.S. customary, engineering, and specific gravity units.

kg/m3 g/cm3 g/mL kg/L lb/ft3 lb/in3 lb/US gal slug/ft3 Specific gravity

Reference

Water near room temperature About 1 g/cm3 = 1,000 kg/m3 = 62.4 lb/ft3

Specific gravity Specific gravity is density divided by water density, so water is about 1

U.S. liquid estimates 1 lb/US gal = 119.826427 kg/m3

Tool Introduction

Use this density converter for materials, liquids, lab notes, HVAC calculations, shipping estimates, and engineering specs. It converts between metric density, U.S. customary density, pounds per gallon, slugs per cubic foot, and specific gravity.

Density is mass per volume. Metric work usually uses kg/m3 or g/cm3, while U.S. references often use lb/ft3 or lb/US gal. Specific gravity compares a material to water, which is useful for quick liquid and material checks.