Paint Booth CFM Calculator
Cross-draft booth airflow from face area at the 100 fpm capture velocity.
Filters loading with overspray drop the face velocity day by day — a manometer across the filter bank tells you when capture is failing.
Formula
Paint Booth CFM Calculator is a free paint booth cfm for HVAC designers, technicians and energy auditors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Paint Booth CFM Calculator
Cross-draft booth airflow from face area at the 100 fpm capture velocity. The calculation implements Q = face area × capture velocity (OSHA 1910.94(c); NFPA 33). Filters loading with overspray drop the face velocity day by day — a manometer across the filter bank tells you when capture is failing.
How to use Paint Booth CFM Calculator
- 1Enter Booth opening width in m.
- 2Enter Booth opening height in m.
- 3Enter Face velocity in m/s (OSHA/NFPA cross-draft: 100 fpm (0.5 m/s)).
- 4Read Exhaust airflow, Airflow instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Paint Booth CFM Calculator?
- ✓Implements the standard formula — Q = face area × capture velocity
- ✓Reference cited on-page: OSHA 1910.94(c); NFPA 33
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Paint Booth CFM Calculator use?+
It computes Q = face area × capture velocity, per OSHA 1910.94(c); NFPA 33. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Filters loading with overspray drop the face velocity day by day — a manometer across the filter bank tells you when capture is failing.
Is this based on ASHRAE methods?+
The calculations follow the standard ASHRAE/ISHRAE formulations cited under the result, simplified where industry practice does the same. For permit-grade design, confirm with the full code procedure.
Is the Paint Booth CFM Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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