Compound Interest Calculator
See your money grow with compounding — daily, monthly, yearly.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use Compound Interest Calculator
Follow these steps — everything happens instantly in your browser.
- 1
Step 1. Enter your principal (starting amount) and the expected annual interest rate.
- 2
Step 2. Enter the time horizon in years and pick a compounding frequency.
- 3
Step 3. Optionally change the currency symbol.
- 4
Step 4. See the final amount, interest earned and a year-by-year growth chart update instantly.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about compound interest calculator.
Loan EMI Calculator
Calculate monthly EMI, total interest and payment — instant, private.
Simple Interest Calculator
Compute simple interest: SI = P × R × T / 100 — fast, free, private.
VAT / Tax Calculator
Add VAT to a net amount or strip it from a gross — any rate.
Tip Calculator
Split the bill and tip fairly — quick percentages, per-person total.