Measure return on investment the standard way. Enter what you spent (cost) and what you got back (gain or revenue) to get ROI as a percentage plus the absolute profit. Useful for marketing campaigns, freelance projects, side hustles and comparing where money actually works hardest.
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It depends on the channel and risk. A single campaign that doubles spend (100% ROI) is very different from a diversified portfolio average. Always compare against your own baseline and alternatives, not a universal number.
The tool reports negative ROI when cost exceeds gain. That is still useful information — it shows which activities destroyed value so you can stop or redesign them.
No. ROI here is a simple cost-vs-return ratio. For multi-year returns, annualise separately or combine with the compound interest tool to compare growth rates.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | Yes | Yes | No | Not required |
| PWA | Yes | Yes | Yes | No | Not required |
| ANDROID | Yes | Yes | Yes | No | Not required |
| IOS | Yes | Yes | Yes | No | Not required |
Project savings growth with compounding interest over time.
Find X% of a number, what percent one number is of another, and percentage change.
Compute sale prices and savings from a discount percent.
Add or remove sales tax worldwide — US states, Canadian provinces, EU/UK VAT, GST and more. Pick a region — the standard rate fills in and stays editable — or stack your own rows with +. Shows the CGST/SGST split for India.
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