Growth rate

Interest Rate Calculator

Find the annual compound rate required to grow one amount into another.

Interpretation

This is a constant annual compound rate. Real investments rarely produce the same return every year, so read the result as the rate that connects the start and end values, not as a guaranteed return.

Example

Growing 1,000 to 1,500 over 5 years requires about 8.45% per year with annual compounding.

Common mistakes

Do not include extra deposits or withdrawals in this calculation. If you add money during the period, use an investment or compound interest calculator with contributions instead.

Limitations

The result does not include taxes, fees, inflation, investment volatility or changing rates. Loan APR and investment return calculations may also use different conventions.

Last reviewed: 2026-05-17

Before relying on this result

Use this calculator together with the formula, assumptions, limitations and examples on the page. If the topic involves health, tax, lending, investment, legal, safety or current-rate decisions, treat the number as an estimate and check the relevant primary source or professional guidance.

Calculator metadata last reviewed: 2026-05-14.