Diffusion Calculator

Diffusion Calculator — calculate diffusion with the correct physics formula. Worked example and unit notes included.

Unit conversion formulas

Linear conversion: Output = Input × conversion factor

Temperature (special cases):

°F = (°C × 9/5) + 32 | °C = (°F − 32) × 5/9 | K = °C + 273.15

Common engineering conversions: 1 bar = 100,000 Pa = 14.504 psi; 1 inch = 25.4 mm; 1 gallon (UK) = 4.546 litres; 1 gallon (US) = 3.785 litres; 1 horsepower = 745.7 W; 1 kip = 4,448.2 N.