ROI calculator

Client

ROI = (gain − cost) / cost × 100.

About ROI calculator

Return on investment from gain and 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.

ROI 50.00%

Nearby workflows on Toolcore

  • ROI percentage — Return on investment from final value and initial cost. when units or numeric output should be checked on a related calculator.
  • Percentage calculator — Percent of a value, ratio to percent, and percent change—no server round-trip. when units or numeric output should be checked on a related calculator.
  • Profit margin calculator — Margin % from cost and selling price. when units or numeric output should be checked on a related calculator.
  • Compound interest calculator — Principal, APR, and compounding—future value, interest earned, and APY for savings-style growth. when units or numeric output should be checked on a related calculator.

Common use cases

  • ROI calculator 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.