Your press, your bag, your target pressure: the exact gauge reading to pump to, in PSI and bar. Free, no sign-up. The same calculation engine as the Extractly app.
Total force = target pressure × bag surface. Gauge reading = total force ÷ effective ram area (same unit for both surfaces). The calculator does it all for you: your press, your bag, your target, and it gives you the exact value to pump to.
The gauge measures the oil pressure, not the pressure on your material. Your bag is bigger than the piston, so the force spreads out and the pressure drops: a bag 3× bigger = pumping 3× higher. The calculator does the conversion.
It depends on the material (flower, hash, WPFF), the bag micron and your setup: there is no universal magic number. This calculator converts YOUR target into a gauge reading for YOUR press. Recommended pressure ranges per material, temperatures and the step-by-step guided press are in the Extractly app.
Yes: no sign-up, no email, no limit. It's the same calculation engine as the Extractly app. The app adds the guided press (temperatures, ramps, holds), micron choice, your run journal and the Rosidex, available in Telegram, on the web (app.extractly.link), or via the PC and Android apps.
Une question, un bug, une presse à ajouter ? Réponse à la même adresse.