I will convert excel to a private web app


About this gig
Still copying formulas across a spreadsheet or repeating the same quote, pricing, scoring, or planning steps? I will turn that workflow into a focused browser-based tool your team can open and use.
You receive:
- a responsive interface for desktop and mobile
- tested business rules and clear error states
- a self-contained HTML file for eligible offline scopes
- full source code and simple usage instructions
Good fits include price and quote calculators, ROI or profit tools, scoring forms, planners, trackers, and form-to-result workflows.
Privacy-first: eligible tools run locally in the browser, with no login, hosting, or monthly subscription.
Before ordering, send your current spreadsheet or written process, sample inputs and expected outputs, and must-have fields. I confirm the package and scope before building.
Not included unless custom quoted: accounts, servers, databases, APIs, payments, scraping, regulated decisions, or app-store publishing.
Send one workflow and one expected result. I'll tell you which package fits.
Get to know Tim Wu
Digital Content and Creative Specialist
- FromTaiwan
- Member sinceMar 2011
Languages
Chinese, English
FAQ
Do I need hosting?
No. For eligible single-file tools, you can open the delivered HTML file directly in a modern browser. Hosting or deployment is separate.
Can the tool work offline?
Yes, if your project does not require APIs, online fonts, databases, logins, or live external data.
Can you copy formulas from my Excel file?
Yes, as long as the formulas and business rules are clear and you provide expected outputs for testing.
What counts as one revision?
One revision is one consolidated round of changes within the approved scope. New formulas, features, screens, inputs, outputs, or workflow changes are outside the original revision scope.
How do you test the tool?
I test approved examples, invalid inputs, edge cases, responsive layout, and mainstream browser behavior before delivery.
Do you provide bug support after delivery?
Yes. Bugs where the delivered tool does not match the approved scope are covered for 7 days after delivery. New features or logic changes are separate.

