Density Converters
Convert between metric, imperial, and engineering density units including kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³, oz/in³, and slug/ft³ using exact multiplicative factors.
Scope & Verification
This hub groups related converter families so you can move from the category level to exact routes with one clear basis per page.
- Families are split so exact-factor, profile-based, density-based, and estimate-style pages do not collapse into one generic answer.
- Leaf pages keep calculator, common values, FAQ, and reverse routes aligned to the same assumption.
- Methodology and verification pages document how those assumptions are chosen and checked.
Explanation
Density is mass per unit volume. This hub converts through kilograms per cubic meter (kg/m³), the SI base used to keep every factor exact and reversible. It covers common metric forms such as g/cm³, g/mL, and kg/L, plus imperial and engineering forms such as lb/ft³, lb/in³, oz/in³, and slug/ft³. Use it when you need a direct density factor, a common-value table, or the reverse page for the same unit pair.
Density pages are organized by conversion direction so mirror leaves remain aligned and comparable.
Open a family hub to reach leaf pages with direct answers, calculator output, and reverse links built on the same constants.
Frequently Asked Questions
What is the SI unit of density?
The SI unit of density is kilograms per cubic meter (kg/m³).
Are g/cm³ and g/mL the same?
Yes. Grams per cubic centimeter (g/cm³) and grams per milliliter (g/mL) are exactly equal.
How does kg/L relate to kg/m³?
Exactly: 1 kg/L = 1000 kg/m³.
Why include slug/ft³?
Slug per cubic foot (slug/ft³) appears in some US engineering contexts and still converts through fixed unit definitions.
Are there offsets in density conversions?
No. Density conversions are purely multiplicative, so there are no additive offsets.
How do I switch direction?
Use the switch button to open the mirror page for the reverse density conversion.