Free Compound Interest Calculator
Calculate how your savings and investments grow over time with daily, monthly, quarterly, or yearly compounding. Includes regular contributions and inflation adjustment.
| Year | Balance | Interest Earned | Inflation Adj. Balance |
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All calculations happen locally in your browser. Your financial data never leaves your device. No signup, no tracking, no storage.
Compound Interest Calculator: See Your Money Grow
Our free compound interest calculator helps you understand how your savings and investments can grow over time. Whether you're planning for retirement, saving for a down payment, or just curious about the power of compounding, this tool provides accurate projections based on the compound interest formula. Use it to compare different scenarios and make informed financial decisions.
Choose from daily, weekly, monthly, quarterly, semi-annual, or annual compounding. More frequent compounding leads to faster growth.
Add monthly or yearly contributions to see how consistent saving can dramatically increase your returns over time.
Factor in inflation to see the real purchasing power of your future savings, not just the nominal value.
View detailed annual growth tables showing how your balance evolves and how much interest you earn each year.
Visualize your investment growth with dynamic charts that update instantly as you change your inputs.
All calculations are performed locally in your browser. No uploads, no signup, no tracking — complete privacy guaranteed.
How to Use This Free Compound Interest Calculator
1. Enter your initial principal (starting amount).
2. Set your annual interest rate and number of years.
3. Choose how often interest compounds — daily, monthly, quarterly, or annually.
4. Add regular contributions (monthly or yearly) if you plan to add money over time.
5. Optionally, factor in inflation to see the real value of your savings.
6. Click "Calculate Growth" to see your projected future value, total interest earned, and a year-by-year breakdown.
Why Use a Compound Interest Calculator?
- Retirement Planning — Estimate how much your retirement savings could grow with regular contributions.
- Investment Comparison — Compare different investment scenarios with varying rates and compounding frequencies.
- Savings Goals — Determine how much you need to save monthly to reach a specific financial goal.
- Educational Tool — Understand the powerful effect of compound interest over long time periods.
- Debt Analysis — See how compound interest works against you with credit cards and loans.
The Compound Interest Formula
This calculator uses the standard compound interest formula: A = P(1 + r/n)^(nt) where:
- A = future value of the investment/loan
- P = principal amount (initial deposit)
- r = annual interest rate (as a decimal)
- n = number of times interest is compounded per year
- t = time in years
For regular contributions, the tool also calculates the future value of a series of payments.
Frequently Asked Questions
Learn how to use this tool correctly by reading our step-by-step tutorial.
