Enter altitude, temperature, and compressor specs and get precise pressure readings in kPa, PSI, Bar, or mBar — corrected for humidity, wind, and barometric conditions. Built for technicians who can't afford to guess.
Core inputs plus advanced environmental factors, combined into one reliable reading — with the full history saved on your device.
Switch instantly between kPa, PSI, Bar, and mBar without re-entering a single value.
Standard atmospheric modeling maps altitude directly to expected pressure drop.
Readings adjust automatically as ambient temperature shifts across a job site.
Factor in compressor output to get true system pressure, not just ambient air.
Moisture content in the air is factored into the final pressure calculation.
Local wind conditions are worked into environmental pressure adjustments.
Every result is saved automatically, so past readings are always one tap away.
No signal, no problem — every calculation runs locally on your device.
I run this before every rooftop unit commissioning. Being able to correct for altitude and temperature on-site instead of guessing has saved me real callbacks.
As a private pilot, I like double-checking density altitude by hand. This gives me a fast, offline cross-check before I even open my flight planning app.
We use it plant-side to sanity-check compressor readings against ambient conditions. Simple interface, and it works fine down in the basement mechanical rooms with no signal.
Yes. The app is free to download and use, with every core and advanced calculation included.
Yes. All calculations run locally on your device using standard atmospheric models, so it works fine in basements, aircraft, or anywhere without signal.
Results can be viewed in kPa, PSI, Bar, or mBar, and you can switch between them instantly without re-entering your inputs.
The app applies standard atmospheric models used across engineering and aviation, giving reliable results for professional and educational use. It's not a substitute for calibrated laboratory instruments.
All calculations and history stay on your device. See the full Privacy Policy for details.
AirPressure Estimator is currently available for Android on Google Play.
Every feature — multi-unit conversion, environmental corrections, and unlimited saved history — is included from the first install.
AirPressure Estimator started as an internal tool for a small crew of field engineers who needed a fast, reliable way to correct pressure readings without pulling out a laptop or a lookup table. We turned it into a standalone app so any technician, pilot, or student could carry the same accuracy in their pocket.
Our mission is simple: give people who work with pressure-sensitive systems a tool that's precise enough to trust and simple enough to use one-handed, on a ladder, in the field.
We read every message. Whether it's a calculation question or a feature request, reach out and we'll get back to you.
If nothing happens, email us directly at vcernakova75@gmail.com
Free to download. Works offline. No signup required.