About
About WebUtilsLab
WebUtilsLab publishes practical calculators, formula builders, reference pages, templates, and conversion tools. It is intended for people who need a specific answer or reusable output without creating an account.
Spreadsheet formulas, developer transformations, and bead-pattern image processing run in the browser wherever practical.
Henry Weng is the site owner and the person responsible for maintaining the tools and corrections.
There is no sign-up, dashboard, saved history, subscription, or database-backed workspace.
What WebUtilsLab is and who it serves
The site brings several practical tool groups into one maintained workspace. It serves spreadsheet users, people planning home projects, 3D-printing users, heat-press makers, fuse-bead pattern makers, and developers working with text or data formats.
- Building spreadsheet formulas and cleaning small text or CSV inputs.
- Estimating home-project, 3D-printing, and heat-press materials, costs, sizes, or placement.
- Converting images into fuse-bead patterns and using browser-based developer utilities.
Who builds and maintains it
Henry Weng is an independent developer and the owner and maintainer of WebUtilsLab. He builds and maintains the spreadsheet, home-improvement, 3D-printing, heat-press, bead-pattern, and developer-tool sections, and reviews reports sent through the contact address.
The site is independently operated. It is not presented as an official service of Microsoft, Google, product manufacturers, or any brand mentioned in a tool or reference page.
How accuracy is checked
Automated unit tests check deterministic formula strings, calculation engines, and known outputs. Representative spreadsheet examples are also checked manually in Excel and Google Sheets so the sample ranges and platform-specific syntax match the formula shown on the page.
Representative worked examples are recalculated by hand against the stated formula, units, assumptions, and rounding. Pages that rely on maintained policy, specification, or reference data identify supporting sources and show a review date where that dataset carries one. Build checks also verify page addresses, internal links, structured data, and representative browser interactions.
Limits of the tools
- Results are estimates or transformations, not a substitute for a licensed professional or project-specific safety review.
- Dynamic-array functions such as FILTER, UNIQUE, and XLOOKUP require a spreadsheet version that supports them.
- Excel and Google Sheets can differ in available functions, array behavior, separators, and external-workbook syntax; formula pages call out practical differences where they matter.
- Imported dates, text-formatted numbers, regional settings, material conditions, local requirements, and product instructions can change a result.
Corrections and feedback
Use the contact page to report an incorrect result, outdated source, broken export, or accessibility problem. Include the page URL, anonymized inputs, the result you received, and what you expected. Henry Weng reviews correction reports and updates the maintained source when a problem is confirmed. Do not send private documents or images.