What is the Retirement Calculator?
Estimate the size of your retirement fund from monthly savings and expected returns.
Enter current age, retirement age, current savings, monthly saving and return per year and the Retirement Calculator returns fund at retirement, total you put in and monthly income at a 4% yearly withdrawal. Results update as you type, and nothing you enter leaves your device.
How it is calculated
FV = S × (1 + i)^n + M × ((1 + i)^n − 1) ÷ i, with n months until retirement
How to use it
- Enter current age in years.
- Enter retirement age in years.
- Enter current savings.
- Enter monthly saving.
- Enter return per year in %.
- Read fund at retirement in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Worked example
Common questions
What formula does the Retirement Calculator use?
It uses: FV = S × (1 + i)^n + M × ((1 + i)^n − 1) ÷ i, with n months until retirement.
What do I need to use the Retirement Calculator?
You need current age, retirement age, current savings, monthly saving and return per year. Sensible starting values are filled in so you can see how it works straight away.
Is the Retirement Calculator free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.