Why this page exists
Measure simple return on investment from starting value, ending value, and extra costs.
Why this page exists
Keep net profit and ROI percentage visible together for fast comparison.
Why this page exists
Useful for marketing spend, purchases, side projects, and straightforward investment checks.
Workspace
ROI calculator
Additional costs are included in total cost before ROI is calculated, so the result is more realistic than a simple buy-versus-sell comparison.
Return breakdown
- Ending value$6,800.00
- Extra costs$150.00
- Formula(Net profit / total cost) × 100
Implementation note
How this tool is structured
Live inputs
Inputs update results instantly, so users can compare scenarios without reloading or leaving the page.
Readable outputs
Primary answers stay prominent, while supporting figures and formulas remain available for context.
Repeatable workflow
Clear and lightweight interactions keep these tools useful for repeated day-to-day calculations.