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ToolDesktop v3.0

Compound Interest Calculator

Project how a lump sum plus recurring contributions grows over time.

Quick utilities

About this tool

Start from a lump sum, an opening balance and a regular contribution, choose how often interest compounds, and follow the balance year by year. Set an inflation rate to read the result in today money.

How to use it

Set the values in the compound interest calculator above and the result updates as you type. Everything runs in your own browser — there is no account, no upload and no server-side calculation, so nothing you type is transmitted or stored.

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