Simple & Compound Interest Calculator — Free Online Tool
Calculate simple or compound interest with yearly, half-yearly, quarterly or monthly compounding.
FAQ
Interest Calculator — frequently asked questions
What is the difference between simple and compound interest?
Simple interest is calculated on the principal only. Compound interest is calculated on the principal plus the interest already earned, so it grows faster over time.
How often can the interest compound?
Yearly, half-yearly, quarterly or monthly. Pick the compounding frequency when you choose compound interest.
Are my numbers uploaded or stored anywhere?
No. Interest Calculator runs in your browser, so your numbers stay on your device and are never sent to our servers or saved anywhere.
Is Interest Calculator really free? Do I need to sign up?
Yes, it is completely free. There is no account, signup, watermark or email to hand over; open the page and use it as often as you like.
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QUICK GUIDE
How to use Simple & Compound Interest Calculator
- Fill in the fields above.
- Click Calculate.
- See the result instantly below.
Privacy
This tool runs in your browser. No data is ever sent to a server, and there is no usage limit.