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Density and Mass

lb/ft³tokg/m³

Convert pounds per cubic foot (lb/ft³) to kilograms per cubic metre (kg/m³).

Factor1 lb/ft³ = 16.01846 kg/m³

Converter

lb/ft³

Accepts numbers or expressions, e.g. 150 + 14.7

Result
800.923kg/m³

Rendered to 6 significant figures.

Formula

Formula
kg/m³ = lb/ft³ × 16.01846

Multiply any value in pounds per cubic foot by 16.01846 to obtain the value in kilograms per cubic metre.

Worked example

Convert 50 lb/ft³ to kg/m³.

  1. 01Start with 50 lb/ft³.
  2. 02Multiply by the conversion factor: 50 × 16.01846 = 800.923 kg/m³.
Result50 lb/ft³ = 800.923 kg/m³

Conversion table

lb/ft³kg/m³
116.018
232.037
580.092
10160.18
20320.37
50800.92
1001601.8
2003203.7
5008009.2
100016018

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/ft³ to kg/m³?
1 lb/ft³ equals 16.01846 kg/m³. To convert, multiply the value in pounds per cubic foot by 16.01846.
How do I convert 1 lb/ft³ to kg/m³?
1 lb/ft³ = 16.0185 kg/m³. For any value, multiply by 16.01846.
How do I convert kg/m³ back to lb/ft³?
Divide by the same factor — or equivalently, multiply by 0.06242796. So 1 kg/m³ = 0.062428 lb/ft³.
When would I need to convert pound per cubic foot to kilogram per cubic metre?
Density conversions are critical for fluid property datasheets, hydraulic head calculations, and reconciling lab measurements (often g/cm³) with process simulator inputs (kg/m³).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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