Permeability converter

Convert water-vapor permeance, the mass transmission rate per area and pressure difference.

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1 kg/(m²·s·Pa) = 1000000000000 ng/(m²·s·Pa)

Results rounded to 12 significant digits.

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Convert Kilograms per square meter second pascal

Convert Nanograms per square meter second pascal

Convert US perms at 0 Celsius

Convert Grams per square meter day kilopascal

Using permeability measurements

This family uses vapor permeance, kg/(m²·s·Pa). The US perm factor is the conventional value at 0 °C, rounded per NIST. Material permeability requires thickness; perm-inch and porous-medium permeability in darcy or m² are excluded. Carry the same physical assumptions into subsequent physics calculations.

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