FIRE Calculator: Plan Your Early Retirement
FIRE Number
$1,176,471 dollars
FIRE Age
54.1
Years to FIRE
24.1 yrs
What your result means
At your current inputs you reach your FIRE number of $1,176,471 dollars at 54.1, which is 9.1 yrs later than your target retirement age of 45. The levers below show what moves that date most.
$50,000 dollars saved of $1,176,471 dollars needed
What moves your date most
Each line changes one input from your current setup and shows the new FIRE age.
- Save 10% more each monthFIRE at 53.1 (1 yr sooner)
- Plan for 10% lower yearly spendingFIRE at 52.7 (1.4 yrs sooner)
- Assume 1 percentage point higher real returnFIRE at 52.1 (2 yrs sooner)
Sensitivity table: FIRE age
FIRE age for different real returns (rows) and monthly savings (columns). The highlighted cell is your current setup.
| Return \ Monthly savings | $750 | $1,125 | $1,500 | $1,875 | $2,250 |
|---|---|---|---|---|---|
| 4% | 70.8 | 64.2 | 59.6 | 56.2 | 53.5 |
| 5% | 65.6 | 60.3 | 56.5 | 53.7 | 51.4 |
| 6% | 61.7 | 57.3 | 54.1 | 51.7 | 49.8 |
| 7% | 58.5 | 54.8 | 52.1 | 50 | 48.3 |
| 8% | 56 | 52.8 | 50.5 | 48.7 | 47.2 |
A dash means the FIRE number is not reached within 60 years. Real return is after inflation.
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How to Use FIRE Calculator
- Free
- No sign-up
- Nothing stored on a server
- Available in 4 languages
- 1
Use the sliders on the left to set your current age (18-80) and target retirement age, your current investment portfolio, how much you save and invest each month, and your expected annual expenses in retirement. You can also fine-tune your expected real annual return (0-15%), safe withdrawal rate (2-6%), and effective tax rate in retirement (0-40%) to match your own investing style and tax situation. Choose from 5 currencies ($, €, £, ₩, ¥) to run the numbers in whichever unit makes sense for you.
- 2
As soon as you change an input, the result cards on the right instantly recalculate your FIRE number, the age you'll reach it, and the years remaining. The chart below separates the accumulation phase, while you're still saving, from the withdrawal phase, after you retire, using different colors, so you can see at a glance how your portfolio grows and then gets drawn down.
- 3
Turn on "Scenario A/B comparison" to enter two different saving strategies at once, for example a higher monthly contribution or a different target age, and see both paths plotted side by side on the chart and result cards. This makes it easy to see exactly how much sooner a small increase in savings could get you to FIRE, or how much a later target age would ease your monthly savings burden.
- 4
All calculations run instantly in your own browser, and nothing you enter, your age, assets, or income, is ever stored or sent to a server. Your FIRE number also isn't just annual expenses divided by the withdrawal rate: it's grossed up for the effective tax rate you set, so with the tax rate at 0% you'll see the classic "25x rule," and with a higher rate you'll see the larger target you'd actually need.
Pick your kind of FIRE
Coast, Barista, Lean and Fat FIRE each have their own target. Open the calculator that matches your plan.
Barista FIRE
See how part-time income shrinks the portfolio you need and how much sooner you can leave full-time work.
Coast FIRE
Find how much you need today to stop saving and still reach FIRE by retirement age.
Lean FIRE
Retire on a minimalist budget with a much smaller target.
Fat FIRE
Keep a comfortable lifestyle in early retirement and see the larger target.
Explore the Guides
Practical guides on FIRE savings, withdrawal strategy, and country-specific retirement accounts.
Finding Purpose and Protecting Mental Health After FIRE
Reaching your FIRE number solves a math problem, not a meaning problem. Here's why the transition out of work is harder than most people expect, and how to plan for it.
FIRE vs Traditional Retirement: What's the Difference?
How FIRE differs from a conventional retirement plan in timeline, funding sources, withdrawal math, and the risks each approach has to manage.
Dollar-Cost Averaging and the FIRE Strategy
How dollar-cost averaging works, why it fits naturally with a FIRE savings plan, and when a lump sum actually beats it.
Starting an Investing Habit With a Small Monthly Amount
You don't need a big paycheck to start investing. Here's a concrete, example-driven plan for turning $50–$100 a month into a real long-term habit.
Estate Planning Basics for Early Retirees
Why reaching FIRE in your 30s or 40s makes estate planning more urgent, not less, with a worked example and the beneficiary-designation mistake that trips up even careful planners.
7 Common Mistakes People Make on the Way to FIRE
The recurring planning errors that quietly derail FIRE timelines — from arbitrary savings targets to ignoring sequence-of-returns risk — and how to avoid each one.
Frequently Asked Questions
A few common questions about the FIRE Calculator.
How is my FIRE number calculated?+
Your FIRE number is your annual expenses divided by your chosen withdrawal rate (commonly 4%, i.e. multiplied by 25), then grossed up for the effective tax rate you set on withdrawals — a higher tax rate raises the target, since you need to withdraw more to keep the same after-tax spending power. With the tax rate set to 0%, this is simply expenses × 25. The calculator projects your savings growth year by year until that number is reached.
Which currencies are supported?+
You can switch the currency from the selector at the top of the calculator; the input ranges automatically rescale to match the selected currency.
What is FIRE?+
FIRE stands for Financial Independence, Retire Early. It's the practice of aggressively saving and investing so your portfolio can cover your living expenses well before traditional retirement age.
Do I need to create an account to use this calculator?+
No. The FIRE Calculator works entirely in your browser without sign-up — your inputs are not saved or sent to a server.
Is this financial advice?+
No. This tool is for educational and illustrative purposes only and does not constitute financial, tax, or investment advice. Please consult a licensed professional for advice specific to your situation.