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I will convert your excel into an interactive web app or calculator
Omar M.
About this gig
Your Excel works it just doesn't travel. You can't send it to a client, open it cleanly on your phone, or use it without risking a broken formula.
I fix that. I turn your spreadsheet into a polished, interactive web tool that keeps every calculation your Excel already does delivered as a single file you own forever. No subscriptions. No templates. No skills needed on your side.
What you get:
- Your formulas & logic, rebuilt to work exactly like in Excel
- Interactive inputs, filters, search & live results
- Professional charts & visualizations
- Works on phone, tablet & desktop
- ONE self-contained file open it anywhere, even offline
Perfect for: price-quote tools & calculators, sales/finance/inventory dashboards, KPI reports, and searchable catalogs.
Why not a no-code builder? They choke on real Excel logic and lock you into a subscription. I rebuild your calculations in code, so the tool behaves like your spreadsheet and stays yours forever.
How it works: send your Excel, tell me what it should do, and I deliver a ready-to-use file.
Have a complex file? Message me first and I'll confirm scope and give you an exact quote.
Respect third-party rights
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Get to know Omar M.
Omar M.
Senior Fullstack Developer Excel VBA and Web Apps
- FromMexico
- Member sinceJul 2016
Languages
Spanish, English
25 years as a fullstack developer. My specialty: turning Excel spreadsheets into fast, interactive, mobile-ready web tools.
My edge is a deep command of Excel and VBA plus modern web (HTML, CSS, JavaScript). I don't just display your spreadsheet — I understand the formulas and logic behind it and rebuild them faithfully, so the web version works exactly like your file.
I also build SaaS/ERP platforms, web apps, and websites, and code in C#, VB.NET, and Python.
I work best with clear, written briefs: send your file and what it should do, and I'll handle the rest with care.
My Portfolio
FAQ
Will my formulas and calculations work exactly like in Excel?
Yes. I rebuild your logic in code and test it against your spreadsheet, so it gives the same results — just interactive and on the web.
Do I need to pay for hosting or a monthly subscription?
No. You get a single file you own. Open it on any device, share it freely, no recurring costs.
Will it work on phones?
Yes. Everything I build is fully responsive — phone, tablet, and desktop.
Can you connect it to live data (Google Sheets, a database, an API)?
That needs a backend and isn't included in the standard packages. Message me and I'll quote it as a custom project.
My Excel uses macros or VBA. Can you convert it?
Macro-heavy files are handled case by case. Send me the file first so I can check what's involved and confirm scope.
What do you need from me to start?
Your Excel file and a short note on what it should do and which parts should be interactive.
