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CCalculateWise

Home & Property

Compound Interest Calculator

Project the future value of savings or investments with compound growth and recurring contributions.

CalculateWise provides estimates for informational purposes only and is not financial, tax, legal, lending or investment advice.

How to use the Compound Interest Calculator

  1. Enter the starting principal.
  2. Add a monthly contribution and annual return.
  3. Choose years and compounding frequency.

How it works

Principal compounds at the chosen frequency, and contributions grow with the same compounding schedule.

Formula

A = P(1 + r/n)^(nt) + PMT × ((1 + r/n)^(nt) − 1) ÷ (r/n)

Example

$10,000 plus $200/month at 7% annual return for 20 years grows to roughly $128,000.

Common uses

  • Retirement savings
  • Investment planning
  • Long-term goals

Frequently asked questions