What does this tool do?
The Savings Goal Calculator tells you when you'll reach a target amount. Enter your goal, current savings, monthly contribution and annual interest rate, and the tool simulates month-by-month compound growth to show the time required, your total contributions and the interest earned.
How to use it
- Enter your values into the fields.
- The result is calculated instantly.
- Read or copy the result.
How the compounding works
Each month the tool applies one month of interest to your running balance and then adds your contribution. The annual rate is divided by twelve to get a monthly rate, and the loop repeats until the balance meets your goal. Because interest is earned on both your deposits and on previously earned interest, the balance grows faster than it would with simple interest. The results panel breaks out the number of months and years needed, the total you contributed, and how much the interest alone added.
Reaching your goal sooner
Raising the monthly contribution shortens the timeline the most, since every extra deposit immediately starts earning interest. Increasing your current savings lifts your starting point, and adjusting the rate lets you compare different accounts or investments. Because the result updates instantly as you change each value, you can see in concrete terms how, for example, saving an extra 50 per month pulls your goal forward by several months.
Frequently asked questions
Is interest applied monthly or annually?
The annual rate you enter is divided by twelve and applied to your balance each month, so it uses monthly compounding. Your contribution is added after interest is credited each month.
Why does it say the goal cannot be reached?
The simulation is capped at 600 months (50 years). If your monthly contribution is very low or the goal is very high relative to your savings and contribution, it won't be met in that window. Try increasing the monthly amount.
How is interest earned calculated?
It subtracts your total contributions (starting savings plus every monthly deposit) from the final balance. What remains is the gain that interest alone produced.
Is Savings Goal Calculator free?
Yes. Savings Goal Calculator and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. Savings Goal Calculator works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.