F:M Ratio Calculator for Activated Sludge | Free | Maji

Free F:M ratio calculator. Enter flow, BOD or COD, aeration volume, and MLVSS to calculate your food-to-microorganism ratio for activated sludge.

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Product — The Maji platform uses AI to connect microscopic imagery with your operational parameters, delivering clear process insights and suggested actions.
Why Maji — Wastewater plants use Maji to prevent costly upsets, reduce chemicals 10–20%, cut energy 5–15%, and save over $200K annually with AI process insight.
About — Maji combines AI with deep wastewater process expertise to widen your sight and deepen your insight
Contact — Reach the Maji team. Book a short demo of the platform or ask a question about how AI can support your activated sludge process and operations.
FAQ — Answers about Maji, the AI platform for activated sludge plants: how it works, what data and operational parameters it uses, and how to get started.
Resources — Resources on MAJI.WORLD Website. AI microscopy and process analytics for activated sludge.
Privacy Policy — Privacy Policy on MAJI.WORLD Website. AI microscopy and process analytics for activated sludge.
Terms Of Service — Terms Of Service on MAJI.WORLD Website. AI microscopy and process analytics for activated sludge.
Accessibility Statement — Maji's commitment to accessibility. We work to make the Maji platform usable for all wastewater professionals, including assistive technology users.
Co Pilot — Ask anything about your plant's process and operations. Maji Co-Pilot is trained only on your plant's records, so answers come from your own history.
Maji Blog — Real plant case studies on foaming, bulking, and filaments, plus process troubleshooting guides from the Maji team for wastewater operators.
Calculators Page — Activated sludge calculators for SRT, F:M ratio, SVI, RAS, WAS rate, MLSS reduction, weekly WAS, and side-by-side scenario comparison.
Microorganisms Gallery — Visual reference of organisms in activated sludge: protozoa, filaments, metazoa, and more. Learn what each indicates about your wastewater process.
Resource Detail — Activated sludge process resources from the Maji team to support wastewater treatment plant operations, troubleshooting, and optimization decisions.