The Rule of 72

A simple rule of thumb: Divide 72 by the annual interest rate to estimate the years required to double your investment.

Example: At 6% interest, it takes about 12 years (72 / 6 = 12).

How does this tool work?

Using it is simple: Enter your values into the provided fields. The calculator processes this data immediately and shows you the precise result. No installation or registration required.

Why use this calculator?

Perfect for personal financial planning, investment decisions, or quick checks. Our tools are designed to handle complex calculations for you and provide instant answers. Optimized for desktop, tablet, and smartphone.

Frequently Asked Questions (FAQ)

Is this calculator free?

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Is my data saved?

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