Start from volume and time
Use the real chamber volume and required pump-down time, not only the machine size.
Vacuum pump sizing tool
Vacuum Pump Sizing Calculator for Industrial Applications
Estimate required pumping speed from chamber volume, target pressure and pump-down time, then send the result for model selection and quotation support.
- Formula
- S = 2.3038 x K x V / t x log10(P1/P2)
- Output
- m³/h + L/s
- Next step
- WhatsApp result
Sizing calculator
Estimate Required Pumping Speed
This tool gives a first-pass sizing result. Final pump selection should also check gas load, leakage, vapor, dust, duty cycle, voltage and installation conditions.
Selection guide
How to Use This Vacuum Pump Calculator
Check target pressure
A lower target pressure usually needs more pumping speed and a suitable pump type.
Keep K traceable
Use K = 1.2 for preliminary sizing unless your engineer confirms a different correction factor.
Need final selection?
Send Your Result and Working Conditions
For formal quotation, please also share voltage, frequency, duty cycle, gas condition, existing pump model and destination country.