Zeeshan Abbas
Founder & Developer, OpsCalculators.com | Six Sigma Yellow Belt
Zeeshan Abbas builds OpsCalculators.com, a free library of industrial and operations engineering calculators in English, Spanish and Portuguese. He is a Six Sigma Yellow Belt who works on continuous improvement (CIP) and cost reduction at Coats, and he turns the formulas engineers use on the shop floor into fast, accurate tools that anyone can run in a browser.
The engineer behind the calculators
Zeeshan Abbas is the founder and developer of OpsCalculators.com, a free platform of industrial and operations engineering calculators built for engineers, planners and students. Every tool is published in three languages: English, Mexican Spanish (es-MX) and Brazilian Portuguese (pt-BR).
His day-to-day work sits in continuous improvement (CIP) and cost at Coats, a global industrial thread and structural components manufacturer. That is where the site comes from: the same takt-time, OEE, EOQ, safety-stock and energy math that drives real factory decisions, rewritten as tools you can use without a spreadsheet or a login.
As a Six Sigma Yellow Belt, Zeeshan approaches each calculator the way you would approach a process: define the inputs, verify the formula against a known result, and remove anything that adds friction. Nothing is published until the math is tested and independently reviewed.
Every calculator is reviewed by a Six Sigma Black Belt
Rimsha Nadeem Anwar
All tools on OpsCalculators.com are technically reviewed by Rimsha Nadeem Anwar, an Industrial Engineer and Six Sigma Black Belt at Coats. She checks each calculator’s method, formula and worked examples against standard industrial-engineering practice before it goes live, so the numbers you get match what you would compute by hand on the floor.
Rimsha on LinkedIn