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Ductulator - Duct Sizing icon

Ductulator - Duct Sizing

by Wassim Murr
Pay once $3.99 4.7 · 357 ratingsiPhone & iPad
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About Ductulator - Duct Sizing

Size HVAC ducts instantly using airflow, friction or velocity.

Get accurate duct dimensions in seconds — no charts required.

Read more

• Get a range of suitable duct sizes based on friction rate or velocity.

• Get multiple valid duct dimensions instantly.

• Tap on Friction Rate or Velocity to toggle between calculation methods.

• IP and SI units.

• Detailed sizing mode to adjust the duct dimensions and air flow rates.

• Supports rectangular, circular and flexible ducts.

• Automatic friction and velocity updates.

Calculations are based on standard air 0.075 lb/ft3 (1.2 kg/m3) in clean galvanized steel or non-metallic flexible ducts.

Any feedback is welcome, and will be the basis for future updates.

How it charges

Pay once $3.99

Paid once — $3.99 — with no in-app purchases.

The store lists no in-app purchases.

Checked against the store listing on Oct 29, 2026. Something wrong? Tell us

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