Less busywork.
More doing.
ToolNuvilo is a collection of small, practical tools for selling, making and everyday work. This release includes: 20 tools, all free.
Useful before impressive.
A tool should answer a question, explain the answer and get out of your way. We start with focused calculators and text utilities, not a wall of sign-up forms.
How the tools are built
Each tool has a documented formula or transformation, example inputs and a clear limits section. Calculations happen in the browser. There are no external AI calls or input-upload endpoints in this release.
Inputs are not saved automatically. Pressing Save project explicitly stores the project name and inputs in this browser. Favorites store only selected tool identifiers. CSV files are processed locally; clipboard, backup and result downloads are initiated by you.
When a rule can change
Platform-specific presets include a source and a checked date. The first eBay preset covers a narrow, labeled scenario; it is not advertised as complete coverage of every category, store plan or surcharge.
Estimates need context
Business calculators are planning aids. They do not determine tax obligations, provider terms, legal requirements or a guaranteed market price. Bring your actual costs and verify assumptions before making a decision.
What this release does not claim
ToolNuvilo does not promise traffic, revenue, search ranking or professional-grade validation for every possible input. It has not connected paid plans, advertising, affiliates or customer accounts.
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