Mello
¤ Finance

Compound Interest Calculator

See how an investment grows over time with compounding.

Runs in your browserNo account requiredNo uploadFree
Loading tool…

About Compound Interest Calculator

Model an initial deposit plus optional monthly contributions over any number of years.

Frequently asked questions

Pick the frequency that matches your account; monthly is the default.

More finance tools

Invoice Generator
Build an invoice and download a clean PDF — no account, no upload.
¤Finance
Mortgage Calculator
See your monthly payment, total interest, and amortization at a glance.
¤Finance
Loan Amortization Calculator
See your loan payment, total interest, and an amortization schedule.
¤Finance
Percentage Calculator
Solve any percentage question in one place.
¤Finance
Profit Margin & Markup Calculator
Cost, price, margin, markup — fill in any two, get the rest.
¤Finance
ROI Calculator
Calculate ROI and annualized return for any investment.
¤Finance