Free Online Calculators
Fast, accurate financial and health calculators. No sign-up, no fees — just answers.
36 calculators and counting!
🏠 Home & Mortgage
Mortgage Calculator
Monthly payments, interest, escrow with state taxes.
Rent vs Buy
Compare renting vs buying over 5 and 10 years.
Home Affordability
How much house can you afford? DTI-based estimate.
Rent Affordability
How much rent can you afford based on your income?
Auto Loan
Monthly car payments and total financing cost.
💰 Investing & Growth
Compound Interest
See how investments grow with compound returns.
Investment Calculator
Growth with dividends, tax advantages, and inflation.
ROI Calculator
Calculate return on investment and annualized return.
FIRE Calculator
Financial Independence — how soon can you retire?
Retirement Calculator
Plan your savings for a comfortable retirement.
Savings Goal
How long until you reach your savings target?
Net Worth Calculator
Add up assets minus liabilities. Know your number.
🏗️ Real Estate
Rental Property ROI
Cash flow, cap rate, and cash-on-cash return.
Cap Rate Calculator
Calculate capitalization rate and NOI.
BRRRR Calculator
Buy, Rehab, Rent, Refinance, Repeat analysis.
House Flip Profit
Estimate flip profit, ROI, and profit per month.
Depreciation
Straight-line depreciation with yearly schedule.
💳 Debt & Loans
💼 Income & Work
Paycheck Calculator
Take-home pay after taxes and deductions.
Hourly to Salary
Convert hourly, weekly, monthly, and annual pay.
Salary Calculator
Convert hourly/weekly/monthly/annual with tax estimate.
Side Hustle Tax
Estimate self-employment taxes on freelance income.
GPA Calculator
Calculate your college GPA on a 4.0 scale.
Grade Calculator
What do you need on your final exam?
Tip Calculator
Calculate tips and split bills easily.
Discount Calculator
Find final price after discounts or BOGO deals.
Percentage Calculator
Three modes: % of, what %, and % change.
🏥 Health & Fitness
🎉 Life Events
⚠️ All calculators are for informational and educational purposes only. Results are estimates and should not be considered financial, legal, or tax advice. Always consult a qualified professional for your specific situation.