📊 Enter Investment Details
Enter your investment details and click Calculate to see how your money grows.
How to Use the Compound Interest Calculator
Enter Your Principal & Rate
Input your starting investment amount and the annual interest rate. The rate is divided by the compounding frequency internally to calculate the periodic rate accurately.
Set Frequency & Contributions
Choose how often interest is compounded — daily gives the highest return. Optionally add regular monthly, quarterly or annual contributions to model ongoing savings or investment plans.
Review Growth & Schedule
See your total balance, interest earned, and total contributions. Explore the growth chart and year-by-year schedule to understand exactly how compound interest builds wealth over time.
Why Use ToollLive Compound Interest Calculator?
Standard CI Formula
Uses the real A = P(1 + r/n)^(nt) formula — the same one used by banks, actuaries, and financial planners worldwide.
Regular Contributions
Model systematic investment plans (SIPs) or savings accounts by adding monthly, quarterly, semi-annual, or annual contributions.
Interactive Growth Chart
Visualise your balance growing over time with a responsive Chart.js graph showing both total balance and principal/interest breakdown.
Year-by-Year Schedule
A full amortisation-style schedule shows your balance, interest earned, and contributions for every year of the investment period.
Inflation Adjustment
Enter an inflation rate to see the real purchasing power of your final balance — not just the nominal figure.
Multi-Currency
Switch between USD, EUR, GBP, INR, JPY, CAD, AUD, and CHF to match your local currency.
Related Finance Tools
View All Finance Tools →Free Compound Interest Calculator — Calculate Investment Growth Online
ToollLive's free compound interest calculator uses the standard financial formula A = P(1 + r/n)^(nt) to compute exactly how your investment grows over time. Enter your principal, annual interest rate, time period, and compounding frequency — daily, weekly, monthly, quarterly, semi-annually, or annually — to see your final balance, total interest earned, and the full year-by-year growth schedule. Our calculator also supports regular contributions, so you can model a savings plan or systematic investment strategy accurately.
The built-in growth chart lets you visualise how compound interest accelerates wealth over time — the famous "snowball effect." An optional inflation adjustment shows you the real purchasing power of your final balance. Whether you're calculating returns on a savings account, a fixed deposit, an index fund, or any interest-bearing account, our compound interest rate calculator gives you precise, real-world results with no sign-up required.
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