// the tools

Play with the science.

Three small, interactive calculators built on peer-reviewed air-quality research. No sign-up, no data collected. Just move the sliders and watch the numbers. Every page cites the studies it's built on.

86US AQI · Moderate

Tool 01

AQI Calculator & Converter

One concentration, four scorecards. Convert any reading into US AQI (2024 breakpoints), EU EAQI, UK DAQI and WHO guideline multiples.

Open tool →

Tool 02

CO₂ Build-up Calculator

How fast does a room get stuffy? Set people, size and airflow to see how quickly CO₂ climbs past 1,000 ppm, and how much ventilation it takes to stay fresh.

Open tool →

Tool 03

Cooking Air-Quality Simulator

Your pan-frying session can hit 90+ µg/m³, 'Unhealthy' on the AQI. Pick a method, stove and ventilation to see the spike and how long it lingers.

Open tool →

Calculators estimate. Partycle measures.

These tools turn the research into numbers you can poke at, but a model is only a model. Partycle reads the real PM2.5 and CO₂ around you, so you can stop guessing and see your actual air.

Get notified →Explore the map →