PC Airflow Calculator

Visualise how air moves through your case, balance intake vs exhaust, and see pressure estimates using real-world fan and case presets.

Beginner Settings

Case preset

Case presets tweak internal restriction and suggested layouts.

Fan preset

Intake fans

Exhaust fans

Radiator

Radiators add restriction and change effective airflow.

Room temperature (°C)

Fan airflow (CFM per fan)

Use manufacturer spec (e.g. 58–70 CFM for many 120mm performance fans).

Static pressure (mm H₂O)

Dust filter restriction

Case restriction

Intake fans

Exhaust fans

Intake airflow: – CFM

Exhaust airflow: – CFM

Estimated pressure: –

Suggestion: Adjust settings to see recommendations.

Neutral

Colours and flow lines represent approximate airflow and pressure.

Intake airflow Exhaust airflow Positive pressure Negative pressure