🧮 Interest Calculator
Use our free Simple Interest Calculator to determine exactly how much interest you’ll earn or owe over time. Whether saving money, taking out a loan, or comparing accounts, this tool gives you fast, accurate results in seconds.
Calculator
Simple Interest Calculator
Inputs
Results
| Year | Total Deposits | Total Interest | Final Balance |
|---|---|---|---|
| 1 | |||
| 2 |
📌 What Is Simple Interest?
Simple interest is a method of calculating interest where it is charged or earned only on the original principal amount, not on accumulated interest. It’s commonly used in:
Short-term personal loans
Bank savings accounts
Government bonds
Car finance agreements
💡 Why Use a Simple Interest Calculator?
Our tool helps you:
Plan savings goals
Compare short-term investments
Understand how much you’ll pay in interest on loans
Estimate returns for junior ISAs, bonds, or fixed accounts
It’s fast, accurate, and doesn’t require registration.
📚 FAQs
Is this interest calculator free to use?
Yes — 100% free with no signup required.
Is it accurate for loans and credit cards?
It’s accurate for loans using simple interest. For credit cards or mortgages, which use compound interest, use this tool.
Can I use it for junior ISAs or Premium Bonds?
Yes — for accounts with fixed rates and no compounding, this calculator is ideal.