Convert Nanograms per square meter second pascal to Grams per square meter day kilopascal

How to convert nanograms per square meter second pascal to grams per square meter day kilopascal

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.

Use x for the value in ng/(m²·s·Pa), b for the intermediate value in kg/(m²·s·Pa), and y for the result in g/(m²·d·kPa).

g/(m²·d·kPa) = ng/(m²·s·Pa) × 1e-12 ÷ 1.1574074074074074e-11

Worked examples

• 10 ng/(m²·s·Pa) ≈ 0.864 g/(m²·d·kPa)

  Step 1: (10 × 1e-12) ≈ 1e-11 kg/(m²·s·Pa).
  Step 2: 1e-11 ÷ 1.15740740741e-11 ≈ 0.864 g/(m²·d·kPa).

• 20 ng/(m²·s·Pa) ≈ 1.728 g/(m²·d·kPa)

  Step 1: (20 × 1e-12) ≈ 2e-11 kg/(m²·s·Pa).
  Step 2: 2e-11 ÷ 1.15740740741e-11 ≈ 1.728 g/(m²·d·kPa).

Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.

Carry the same physical assumptions into subsequent physics calculations.