How Rich Will I Be? — Wealth Forecast Calculator

Project your future net worth with year-by-year compound interest — free, private, runs entirely in your browser.

Try it Free →

Features

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Year-by-year compound model

Simulates assets each year using your investment return, with income and expenses compounding at their own growth rates.

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FIRE age estimate

Pinpoints the age when your annual investment returns can cover your yearly expenses — your theoretical financial freedom point.

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Wealth milestones

Automatically marks the age you first reach 1M, 5M and 10M so you can see how far each goal really is.

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Interactive growth curve

An ECharts area chart of your net worth over time; hover any age to see that year's income, expenses and total assets.

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Real purchasing power

Toggle between nominal amounts and inflation-adjusted real value to understand what your money will actually be worth.

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Completely private

Every calculation runs locally in your browser. Your financial data is never uploaded or stored on any server.

How to Use

1

Enter your basics

Fill in your current age, target age, current savings, monthly income and monthly expenses.

2

Tune growth rates

Adjust income growth, expense growth (inflation) and annual investment return — or keep the sensible defaults.

3

Add one-off events

Add events like buying a house or a yearly bonus, each with an age and a positive or negative amount.

4

Read your forecast

Instantly see your projected wealth, the growth curve, milestones, your FIRE age and a year-by-year breakdown.

Frequently Asked Questions

Is this wealth forecast tool free?
Yes, it is completely free with no sign-up and no limits.
Is my financial data safe?
Absolutely. All calculations happen entirely in your browser and inputs are saved only in your local storage — nothing is ever uploaded to a server.
How is the future net worth calculated?
Each year your assets grow by your investment return, then your net savings (income minus expenses plus any events) are added. Income and expenses compound annually at the rates you set.
What is the FIRE age?
FIRE (Financial Independence, Retire Early) age is the first year your annual investment returns are large enough to cover that year's expenses, meaning you could theoretically live off your investments.
What does 'real purchasing power' mean?
It converts your projected wealth back to today's money using your expense growth (inflation) rate, so you can see what the amount is truly worth in current terms.

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