Compound growth workspace
After the first calculation, changing a parameter reactively updates the numbers and area chart.
Ready for a local calculation.
No uploadThe model assumes contributions at month-end and converts annual return to an effective monthly rate. It is not a return guarantee.
All inputs stay in this browser tab; no account, upload endpoint or remote storage is used.
DCA & compound features
Compare principal invested with portfolio value and translate the ending balance into an inflation-adjusted real value.
3-step guide
- 1Enter the assumptions and choose an input mode.
- 2Run the local calculation and inspect metrics and the Chart.js visualization.
- 3Copy the summary or download the local text result.
Browser-only privacy
All inputs stay in this browser tab; no account, upload endpoint or remote storage is used.
Financial outputs are scenario estimates; verify material decisions with qualified professionals.
Frequently asked questions
Are contributions made at the start or end of a month?
This calculator models end-of-month contributions; different timing changes the result.
How should I read real value?
Nominal ending assets are divided by the compounded inflation factor to express purchasing power in today-like units.
Is this investment advice?
No. Return, inflation and time horizon are editable assumptions; actual market results can differ substantially.