What compounding frequencies are supported?

Annually, semiannually, quarterly, monthly, and daily.

Can I include regular contributions?

Yes, set an extra contribution amount added at every compounding period.

Is this financial advice?

No, it's an educational estimator only.

Is my data uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your input never leaves your device and nothing is logged or stored on our servers.

Does it work offline and on mobile?

Yes. Once the page has loaded it keeps working without a network connection, and the layout is responsive so it stays usable on phones and tablets.

Compound Interest Calculator

Project investment growth with compounding and recurring contributions.

Support

Works Offline

Privacy First

No Login

No API

Investment details

Principal

Annual rate (%)

Years

Compounding

Extra contribution per period

Result

Final balance

16470.09

Total contributed

10000.00

Interest earned

6470.09

About the Compound Interest Calculator

Calculate how an investment grows over time with compound interest, adjustable compounding frequency, and optional recurring contributions per period.

Examples

$10,000 at 5% for 10 years

P=10000, r=5%, t=10y, monthly

Output

≈ $16,470

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

Related tools

Discount & Sales Tax Calculator

Math & Numbers

Calculate a discounted price plus sales tax and total savings.

GCD & LCM Calculator

Math & Numbers

Find the greatest common divisor and least common multiple of numbers.

Loan & EMI Calculator

Math & Numbers

Calculate monthly loan payments, total interest, and view the full amortization schedule.

Matrix Calculator

Math & Numbers

Add, multiply, transpose, and invert matrices with an editable grid.

Tip & Bill Split Calculator

Math & Numbers

Calculate tip amount and split the bill evenly among a group.

BMI Calculator

Math & Numbers

Calculate your Body Mass Index and healthy weight range.

Frequently asked questions

Comments

No login needed. Comments appear after a quick review.

Loading comments…

Version 1.0.0 · Updated 2026-08-07 · Runs entirely in your browser