The FIRENumber
Free FIRE Calculator Suite

When can you stop
working for money?

Eight free calculators that answer the questions behind financial independence — no finance degree needed. Enter your numbers, get your answer in seconds.

No sign-up. No email. Just the math.

New to FIRE? Start here.

Three calculators. That's all you need to begin.

You don't need to understand all 8 calculators right away. Start with these three — in order.

1

Find your FIRE number

This is the total amount of money you need saved/invested to never need a paycheck again.

FIRE Number Calculator →
2

See how fast you're getting there

Based on your income and spending, find out your savings rate and how many years until you hit your number.

Savings Rate Calculator →
3

Get your retirement date

Run a year-by-year projection to see the exact age you can stop working.

Retirement Date Calculator →

All eight calculators.

Every tool you need for financial independence, in one place.

Start here

How much money do I need to retire?

FIRE Number Calculator

Enter your yearly spending — we'll tell you the exact portfolio size you need to never work again.

≈ 30 sec Try it →

What year will I actually be able to retire?

When Can I Retire?

Enter your savings, income, and expenses — get a year-by-year roadmap showing exactly when you hit your goal.

≈ 1 min Try it →

How fast am I saving money?

Savings Rate Calculator

Enter your income and spending — see your savings rate and how many years until you're financially free.

≈ 30 sec Try it →

Can I stop saving and just let my money grow?

Coast FIRE Calculator

Check if your current savings are already enough to compound to your retirement goal on their own — no new contributions needed.

≈ 45 sec Try it →

What if I work part-time instead of fully retiring?

Barista FIRE Calculator

See how a small part-time income (like a barista job) dramatically shrinks the portfolio you need to retire.

≈ 30 sec Try it →

Can I retire early on a tight budget?

Lean FIRE Calculator

Planning to live simply and spend less in retirement? See how a frugal lifestyle can get you to freedom years earlier.

≈ 30 sec Try it →

I want a comfortable retirement — not just scraping by.

Chubby FIRE Calculator

A step above the basics — calculate the portfolio you need for a comfortable life with a solid financial cushion.

≈ 30 sec Try it →

What if I want to retire rich?

Fat FIRE Calculator

Target a high-spending retirement — travel freely, cover healthcare, and live well above your current lifestyle.

≈ 30 sec Try it →
The Basics

What is FIRE — explained simply.

In plain English:

Imagine having a big pile of money invested in stocks or funds. If that pile is large enough, it grows by more than you spend each year — so you can live off the growth forever, without ever touching a paycheck again. FIRE is simply the plan to build that pile as fast as possible.

FIRE stands for Financial Independence, Retire Early. The math is simpler than it sounds:

The rule of thumb

Your FIRE number = Annual spending × 25

Spend ₹6L/year? You need ₹1.5 Cr invested. Spend $50K/year? You need $1.25M.

The "25×" comes from the 4% safe withdrawal rate — a rule backed by decades of research saying you can safely spend 4% of your portfolio each year without running out of money (because good investments grow at roughly 7% per year after inflation, covering your withdrawals and then some).

The different types of FIRE — which one fits you?

Lean FIRE — Minimalists
Retire on a tight budget — spend less, retire sooner.
Standard FIRE — Most people
Retire with the same lifestyle you have today.
Chubby FIRE — Comfort seekers
A bit more cushion — live comfortably, not extravagantly.
Fat FIRE — High earners
Retire rich — travel, splurge, and have zero money anxiety.
Coast FIRE — Mid-journey savers
Your savings are already big enough — stop contributing, just let them grow.
Barista FIRE — Semi-retirees
Leave your career, work part-time, let your portfolio cover the rest.

How the calculators work together

Each tool answers a different question. Start with the FIRE Number Calculator to find your target. Then use the Savings Rate Calculator to understand how fast you're building toward it. Finally, the When Can I Retire? calculator gives you a precise year to aim for.

All calculators update instantly as you drag the sliders, use real inflation-adjusted returns, and encode your inputs into a shareable URL. No sign-up. No email. Just the math.

Read the full FIRE guide →

The 4 numbers behind every FIRE calculation

4%
Safe Withdrawal Rate
How much you can spend each year without running out
25×
Expenses = FIRE Number
Multiply your annual spending by 25
50%
Savings Rate
Save half your income → retire in ~17 years
7%
Avg Real Return
What stocks have historically grown after inflation

Built to be better than the rest.

Shareable results

Every calculation encodes to a URL — copy it and share your exact scenario.

Real-time math

Drag a slider, see the answer update instantly. No submit button needed.

Dark mode

Easy on the eyes, day or night.

Print-friendly

Clean print styles so you can take your results to a financial adviser.

The FIRE Number calculators are for educational purposes only and do not constitute financial advice. All figures use inflation-adjusted (real) returns. Past performance does not guarantee future results. Consult a qualified financial professional before making investment decisions.