The Fixed Deposit Calculator is a free tool that helps you calculate fixed deposit using the formula A = P x (1 + r/n)^(n x t). Enter your values above and press Calculate to get interest earned, maturity amount instantly, with a full step-by-step breakdown.
What is the Fixed Deposit Calculator?
The fixed deposit calculator is a free online tool that helps you calculate fixed deposit quickly and accurately. It applies the standard formula A = P x (1 + r/n)^(n x t) to the values you enter and, when you press Calculate, displays the result together with a clear, step-by-step explanation of how the answer was reached.
Also known as: fd calculator, sbi fixed deposit calculator, fd calculator sbi, fd interest calculator, post office fd calculator, fd calculator hdfc.
How to use the Fixed Deposit Calculator
- Enter the deposit amount.
- Enter the FD interest rate.
- Enter the tenure.
- Choose the compounding frequency (banks usually compound quarterly).
- See maturity value.
Formula used
The fixed deposit calculator is based on this formula:
A = P x (1 + r/n)^(n x t)Each term in the formula corresponds to one of the inputs explained below. The calculator performs the arithmetic for you and shows every step so you can check the working by hand if you wish.
Worked example
Suppose you enter 100000, 7%, 5y, quarterly. The calculator works as follows:
| Inputs | 100000, 7%, 5y, quarterly |
|---|---|
| Working | A = 100000 x (1 + 0.07/4)^(4x5) |
| Result | Maturity about 141478 |
Step-by-step calculation
- Apply the formula:
A = P x (1 + r/n)^(n x t) - Substitute your values: A = 100000 x (1 + 0.07/4)^(4x5)
- Read the result: Maturity about 141478
Inputs explained
- Deposit amount — the deposit amount used in the calculation.
- Annual interest rate (%) — the annual interest rate used in the calculation.
- Tenure (years) — the tenure used in the calculation.
- Compounding — the compounding used in the calculation.
Understanding your result
- Interest earned — the calculated interest earned.
- Maturity amount — the calculated maturity amount.
Benefits and practical uses
The fixed deposit calculator saves time and removes the risk of manual errors when you need to calculate fixed deposit. It is useful for students, professionals and anyone who wants a fast, dependable answer. Results update the moment you press Calculate, work on any device, and can be copied or shared in a single click — and because the maths runs in your browser, your figures stay completely private.
Tips for an accurate result
- Keep all related inputs in the same units.
- Use the worked example above to confirm you are entering values in the right places.
- Review the assumptions below so the result fits your situation.
- Press Reset to clear everything and try a different scenario.
Common mistakes to avoid
- Entering values in the wrong unit (mismatched units give wrong answers).
- Leaving a required field empty — the calculator will ask you to fill it in.
- Confusing the annual rate with a monthly rate, or tenure in years with months.
- Treating the estimate as a guaranteed return — markets and rates vary.
Assumptions and limitations
- Rate fixed for the tenure.
- Interest reinvested (cumulative FD).
- TDS and taxes are not deducted in this estimate.
Frequently asked questions
How is FD interest compounded?
Most Indian banks compound fixed-deposit interest quarterly.
Is FD interest taxable?
Yes. Interest is added to your income and taxed at your slab rate; TDS may apply above thresholds.
How do I use the Fixed Deposit Calculator?
Enter your values in the fields, then press the Calculate button to see the result. Use Reset to clear the form and start again. Nothing is calculated until you click Calculate.
What formula does the Fixed Deposit Calculator use?
It uses the standard formula: A = P x (1 + r/n)^(n x t). The full step-by-step working is shown with every result so you can verify it.
What information do I need to use the fixed deposit calculator?
You need: deposit amount, annual interest rate, tenure, compounding. Sensible example values are pre-filled so you can see how it works.
Is the Fixed Deposit Calculator free to use?
Yes. Every DigiToolkit calculator is completely free, with no sign-up, no login and no usage limits.
Does the Fixed Deposit Calculator work on mobile phones?
Yes. The calculator is mobile-first and works on phones, tablets and computers in any modern browser.
Do I need to install an app?
No. The fixed deposit calculator runs directly in your web browser — there is nothing to download or install.
Is my data private when I use this calculator?
Yes. All calculations run inside your browser. The numbers you enter are never uploaded to a server or shared with anyone.
How accurate is the Fixed Deposit Calculator?
It uses the generally accepted formula for fixed deposit and computes to several decimal places. Results are accurate for the assumptions listed on this page.
Can I copy or share my result?
Yes. After calculating, use the Copy button to copy the result, or Share to copy the page link.
Why is nothing showing until I press Calculate?
By design, the calculator only computes when you press Calculate, so you can finish entering all your values first. Press Reset any time to clear everything.