Choose a calculator
21 free tools. No sign-up. Instant results.
Grow your money
Compound Interest
See how regular investing snowballs over time thanks to compound growth.
Calculate growth →Savings Interest
See how much a high-yield savings account or CD will earn you.
Estimate interest →Savings Goal
Work out exactly how much to save each month to hit any target.
Set your goal →Emergency Fund
Find your target safety net and how soon you'll reach it.
Size your fund →ROI Calculator
Find your total and annualized return on any investment.
Calculate ROI →Inflation
See how inflation erodes the value of cash and why investing matters.
Check purchasing power →Retire & reach FIRE
FIRE Calculator
Find your "freedom number" and the year you could retire early.
Find your FIRE number →Retirement
Project your nest egg and the income it could pay you in retirement.
Project retirement →401(k)
Project your retirement balance and see how much your employer match is worth.
Project your 401(k) →Roth IRA
Project your tax-free retirement growth.
Grow tax-free →Net Worth
Add up assets and debts to see your true net worth at a glance.
Calculate net worth →Home, car & loans
Mortgage Calculator
Estimate your monthly payment and the real lifetime cost of a home loan.
Estimate payment →Home Affordability
Find out how much house you can afford with the 28/36 rule.
Check affordability →Rent vs Buy
Compare the true long-term cost of renting versus buying a home.
Compare options →Car Loan
Estimate your monthly auto payment and the true cost of financing a car.
Estimate payment →Student Loan
See your payment, total interest, and payoff date.
Plan payoff →Debt, budget & pay
Debt Payoff
See how fast you can be debt-free and how much interest you'll save.
Plan payoff →Debt-to-Income
Calculate your DTI ratio and see how lenders view it.
Check your DTI →Budget (50/30/20)
Split your take-home pay into needs, wants and savings.
Plan your budget →Paycheck
Estimate your take-home pay after taxes, FICA and 401(k).
Estimate take-home →Salary to Hourly
Convert an annual salary into hourly, weekly and monthly pay.
Convert pay →What is financial freedom?
Financial freedom means having enough income from savings and investments that working becomes a choice rather than a necessity. It doesn't require a huge salary — it requires a plan, consistency, and an understanding of how compound growth works in your favor over time.
These free calculators are built to make that plan concrete. Instead of vague advice, you get real numbers: how much your investments could be worth, when you could retire, and how to get out of debt faster. Everything runs instantly in your browser — nothing is stored, and you never need an account.
How to use these tools together
- Start with the FIRE calculator to find your target — the amount of invested money that would cover your living costs forever.
- Use the compound interest calculator to see how monthly investing gets you there.
- Clear high-interest debt first with the debt payoff planner — it's a guaranteed return.
- Set concrete milestones using the savings goal and retirement calculators.
The earlier you start, the less you need to save each month — because time, not timing, is the most powerful force in building wealth.
Quick answers
Real questions, worked out by the calculators. Tap one to change the numbers.
Latest guides
All 61 guides →
How to Build a CD Ladder
Long-term CD rates with access to part of your money every year — a worked $25,000 example.
Updated
Read the guide →
Why Did My Savings Rate Drop?
Four causes, one fingerprint each — and what the gap is costing you per year.
Updated
Read the guide →
How Much Cash Is Too Much?
Emergencies plus anything with a date attached — and what the excess quietly costs you.
Updated
Read the guide →