Savings Calculator
Last updated: June 7, 2026Project your savings with monthly deposits.
The Savings Calculator projects how a savings pot grows from an initial deposit plus regular monthly contributions earning compound interest. Enter your starting amount, monthly saving, annual rate and number of years, and it instantly returns your future balance, the total contributions you paid in, and the interest earned on top. It runs entirely in your browser, needs no sign-up, and works for any currency you save in.
Disclaimer: This calculator is for informational and educational purposes only and is not financial advice. Actual figures depend on your provider, interest rates, fees, taxes and personal circumstances. Consult a qualified financial professional before making financial decisions.
How to use Savings Calculator
Use the Savings Calculator to model a savings or deposit account in seconds. It assumes monthly compounding with contributions added at the end of each month, then splits the result into your own money versus growth. Change any field and the three result cards recalculate live, so you can test different rates, timelines and monthly amounts without ever reloading the page.
Read the full guide: How to Calculate Savings Growth With Compound Interest
- 1Enter your initial deposit (the lump sum you start with) and your monthly contribution (the amount you add at the end of each month).
- 2Type the annual interest rate as a percentage, for example 6 for 6%, then enter how many years you plan to keep saving.
- 3Read the future balance, total contributions and interest earned cards, which update instantly as you edit any input.
- 4Try smaller or larger monthly amounts and longer timelines to see how compounding and extra contributions reshape the final balance.
Splits saving from growth
Separate cards show exactly how much you paid in versus how much was added by compound interest, so the real return is obvious.
Instant live results
Every figure recalculates the moment you change a deposit, contribution, rate or year, making it easy to compare scenarios.
Currency-agnostic and private
The math works for dollars, pounds, euros or rupees, and runs fully in your browser with nothing uploaded or saved.
Planning a monthly savings habit
See what setting aside a fixed amount each month becomes over five, ten or twenty years. Start with a small deposit, add your realistic monthly contribution, and watch how the interest earned card grows relative to what you paid in, helping you commit to a number you can sustain.
Comparing savings account interest rates
Keep your deposit, monthly contribution and years fixed, then change only the annual rate to compare a 3% account against a 5% one. The gap in future balance and interest earned shows in cash terms why a higher-rate account or fixed deposit is worth switching to.
Setting an emergency fund or deposit goal
Work out how long it takes to reach a target, such as a house deposit or a six-month emergency fund. Adjust the monthly contribution and years until the future balance matches your goal, so you know the exact amount to save each month to get there on time.
Showing kids or beginners compound interest
Use round numbers to demonstrate how money grows on its own. With contributions set to zero you see pure compounding on a lump sum; add a monthly amount and the future balance jumps, making the value of starting early and saving regularly easy to grasp visually.
Savings Calculator — frequently asked questions
What formula does the Savings Calculator use?
It adds two parts: the future value of your initial deposit, initial x (1 + i)^n, and the future value of your monthly contributions as an ordinary annuity, monthly x ((1 + i)^n - 1) / i, where i is the monthly rate (annual rate / 12) and n is the number of months (years x 12).
How is interest earned calculated?
Interest earned is your future balance minus your total contributions. Total contributions equal the initial deposit plus every monthly payment (monthly amount x years x 12), so the remainder is purely the compound growth.
Does it compound monthly or annually?
Monthly. The annual rate is divided by 12 and applied each month, and contributions are assumed to be made at the end of each month (an ordinary annuity). Real accounts that compound daily or pay at a different time may differ slightly.
Is it accurate enough for real planning?
The math is exact for the assumptions shown, but it is an estimate. It uses a single fixed rate and ignores taxes, fees, inflation and rate changes, so treat the result as a clear projection rather than a guaranteed outcome.
Is my financial data private?
Yes. Every calculation happens locally in your browser. Nothing you type is uploaded, logged or stored, and there is no sign-up, so your deposit amounts and savings goals never leave your device.
Share this tool
Send it to someone who needs it or save the link for later.
More calculators
View allPregnancy Due Date Calculator
Estimate your baby's due date from your last period.
Body Fat Calculator
Estimate body fat % with the Navy method.
Ideal Weight Calculator
Healthy weight for your height and sex.
Running Pace Calculator
Pace per km/mile and speed from time & distance.
Grade Calculator
Weighted class grade from your assignments.
Fraction Calculator
Add, subtract, multiply and divide fractions.