ROI percentage
ClientROI = (gain − cost) / cost—enter final value and initial cost.
Return on investment from final value and initial cost.
About ROI percentage
Return on investment from final value and initial cost. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.
How to use this page
Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.
Common use cases
- ROI percentage for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Open the page directly—multi-field inputs are not URL-prefilled.
More tools
Related utilities you can open in another tab—mostly client-side.
Profit margin calculator
ClientRevenue and cost—gross profit, margin %, and markup %, calculated locally.
Percentage calculator
ClientPercent of a value, ratio to percent, and percent change—no server round-trip.
Simple interest calculator
ClientI = P·r·t for principal, annual rate %, years—no compounding.
Break-even units
ClientFixed cost ÷ (price − variable cost) per unit.