Enter any two values to compute the third for mass, area, and areal density, with outputs in kg/m² and other supported units.
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Kg/m² Formula
The following expresses areal density in base units and can be rearranged to solve for any variable.
\mathrm{areal\ density} = \frac{\mathrm{mass}}{\mathrm{area}}- 1 kg = 1000 g
- 1 lb = 0.45359237 kg
- 1 oz = 0.028349523125 kg
- 1 m² = 10,000 cm² = 1,000,000 mm²
- 1 ft² = 0.09290304 m²; 1 yd² = 0.83612736 m²; 1 in² = 0.00064516 m²
- 1 lb/ft² ≈ 4.882427636 kg/m²
- 1 oz/yd² ≈ 0.033905747 kg/m²
Kg/m² Conversion Table
| kg/m² | lb/ft² |
|---|---|
| 0.05 | 0.010 |
| 0.10 | 0.020 |
| 0.20 | 0.041 |
| 0.30 | 0.061 |
| 0.50 | 0.102 |
| 0.75 | 0.154 |
| 1 | 0.205 |
| 1.25 | 0.256 |
| 1.5 | 0.307 |
| 2 | 0.410 |
| 2.5 | 0.512 |
| 3 | 0.614 |
| 4 | 0.819 |
| 5 | 1.024 |
| 7.5 | 1.536 |
| 10 | 2.048 |
| 12.5 | 2.560 |
| 15 | 3.072 |
| 20 | 4.096 |
| 25 | 5.120 |
| * Conversion: 1 kg/m² = 0.204816 lb/ft² (and 1 lb/ft² ≈ 4.88243 kg/m²). | |
How do you calculate kg/m²? Divide mass by area using base units: kg/m² = mass(kg) ÷ area(m²), then convert to any desired unit set.
How do you convert other areal density units to kg/m²? Multiply by the proper factor: g/m² × 0.001 → kg/m²; lb/ft² × 4.882427636 → kg/m²; oz/yd² × 0.033905747 → kg/m².
Example Problem
Compute areal density for a sheet with mass 2.5 kg and area 5 m².
Use the formula: areal density = mass ÷ area.
kg/m² = 2.5 ÷ 5 = 0.5 kg/m²
