Duct velocity calculator
Calculate air velocity from volumetric airflow and round duct diameter.
Velocity—Enter airflow and diameter.
Formula: velocity = volumetric flow ÷ duct cross-sectional area.
Practical engineering references
Quick tools for early-stage powder handling and dust-control decisions.
These calculators support preliminary checks only. Final equipment selection must consider the complete process duty, material behaviour, safety requirements and site conditions.
Interactive calculators
Start with the operating numbers.
Use these tools to structure an initial discussion with KEMAC. Results are indicative and are not a substitute for detailed engineering.
Air-to-cloth ratio calculator
Calculate filtration velocity from airflow and effective filter area.
Air-to-cloth ratio—Enter airflow and filter area.
Actual allowable ratio depends on dust properties, cleaning method, operating temperature and required emissions performance.
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Contact KEMAC →Engineering disclaimer: Calculator outputs are preliminary indicators. They do not account for all material, safety, process, environmental, mechanical or regulatory requirements. Do not use them as final design values without competent engineering review.