// calculator

Compound Interest

Project how an investment grows with compound interest. Compare a fixed return against a simulation with annual volatility of ±2 to 6 points.

Initial amount

Annual return

Monthly contribution (optional)

Investment years 20 years

0 50 100

Fixed %

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Variable %

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Random simulation: each year the return shifts between 2 and 6 points, up or down, from your rate. It regenerates when you move the time slider.

Total invested

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Interest earned

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Multiplier

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Investment growth

Fixed Variable Other simulations