Make the numbers
make sense.
Useful calculators for money, home, work, business, health, fitness, travel and everyday life. No signup. No spreadsheets. Just clear answers.
What are you trying to figure out?
Pick a real-life question, not just a calculator name.
Is this rental property a good investment?
Screen the deal, calculate NOI and cash flow, test financing, vacancy and long-term ROI.
Open Rental Property Toolkit →How much home can I afford?
Estimate a realistic home price from income, debt and housing-cost assumptions.
Check affordability →Am I saving enough for retirement?
Estimate the portfolio you may need and compare it with projected savings.
Plan retirement →What am I actually earning?
Turn salary, bonus and deductions into estimated annual, monthly and paycheck take-home pay.
Understand my pay →What should my protein target be?
Estimate a daily protein target from body weight and your selected goal.
Calculate protein →What will this trip actually cost?
Build a practical vacation budget across travel, lodging, food and other expenses.
Plan trip cost →What car can I afford?
Estimate a practical vehicle budget before comparing payment options.
Check car budget →What pace do I need to run?
Convert distance and time into pace so you can plan a run or race target.
Calculate pace →Browse the calculator library
Pick a tool. Enter a few numbers. Get an answer.
Money
10 calculatorsCompound Interest Calculator
Estimate future value with compounding and regular contributions.
Simple Interest Calculator
Calculate total value using simple interest.
Savings Goal Calculator
Find the monthly amount needed to reach a savings target.
Investment Return Calculator
Calculate total investment return percentage.
ROI Calculator
Calculate return on investment.
Profit Margin Calculator
Calculate profit and profit margin.
Markup Calculator
Calculate markup from cost and selling price.
Discount Calculator
Calculate sale price and savings.
Sales Tax Calculator
Calculate sales tax and final price.
Tip Calculator
Calculate tip, total bill, and split amount.
Home & Real Estate
7 calculatorsMortgage Calculator
Estimate monthly principal and interest.
Mortgage Affordability Calculator
Estimate home price from a target monthly payment.
Mortgage Refinance Calculator
Estimate refinance break-even time.
Rent vs Buy Calculator
Compare rent with estimated ownership cost.
Home Equity Calculator
Calculate home value minus mortgage balance.
Property Tax Calculator
Estimate annual property tax.
Home Appreciation Calculator
Estimate future home value.
Rental Property
Screen a deal, understand operating performance, add financing, and model long-term returns.
Rental Property Calculator
Analyze cash flow, NOI, cap rate, cash-on-cash, DSCR and the 1% rule.
Rental Yield Calculator
Compare gross and net rental yield after vacancy and operating expenses.
Cap Rate Calculator
Measure net operating income relative to property value.
Cash-on-Cash Return Calculator
Measure annual cash flow against the cash you invested.
1% Rule Calculator
Quickly screen monthly rent against acquisition price.
Gross Rent Multiplier Calculator
Compare property price with annual gross rental income.
Vacancy Cost Calculator
Estimate lost rent and the occupancy needed to cover costs.
Rental Property ROI Calculator
Model cash flow, appreciation, principal paydown and sale equity.
Work & Business
10 calculatorsFreelancer Rate Calculator
Find the hourly rate needed for an income goal.
Consulting Fee Calculator
Calculate a project fee from annual targets.
Hourly to Salary Calculator
Convert hourly rate to annual salary.
Salary to Hourly Calculator
Convert annual salary to hourly equivalent.
Salary Increase Calculator
Calculate salary after a raise.
Bonus Calculator
Calculate bonus amount.
Commission Calculator
Calculate commission earnings.
Overtime Pay Calculator
Estimate weekly pay including overtime.
Total Compensation Calculator
Calculate salary plus bonus, equity and benefits.
Customer Acquisition Cost Calculator
Calculate average cost to acquire a customer.
Salary & Taxes
10 calculatorsTake-Home Pay Calculator
Estimate monthly take-home pay.
Effective Tax Rate Calculator
Calculate taxes as a percentage of income.
Raise Take-Home Calculator
Estimate monthly take-home increase from a raise.
Paycheck Calculator
Estimate gross pay per paycheck.
Bonus After Tax Calculator
Estimate bonus after tax.
Retirement Contribution Calculator
Calculate employee and employer contributions.
401(k) Match Calculator
Estimate employer matching dollars.
Salary Growth Calculator
Project salary after repeated raises.
Income Per Day Calculator
Convert annual income to income per workday.
Annual Overtime Calculator
Estimate annual overtime earnings.
Retirement & Investing
10 calculatorsRetirement Calculator
Estimate a rough retirement savings target.
Retirement Savings Growth Calculator
Project retirement savings with ongoing contributions.
Safe Withdrawal Calculator
Estimate annual withdrawal from a portfolio.
Retirement Income Calculator
Estimate monthly retirement income.
Future Value Calculator
Calculate future value of a lump sum.
Present Value Calculator
Calculate present value of a future amount.
Annualized Return Calculator
Calculate compound annual growth rate.
Dividend Income Calculator
Estimate annual dividend income.
Dividend Reinvestment Calculator
Estimate growth with dividends reinvested.
Investment Contribution Calculator
Estimate future value of regular contributions.
Debt & Credit
10 calculatorsDebt-to-Income Calculator
Calculate debt-to-income ratio.
Debt Payoff Calculator
Estimate months to pay off debt.
Credit Card Interest Calculator
Estimate credit-card payoff time.
Loan Payment Calculator
Estimate monthly fixed-rate loan payment.
Loan Interest Calculator
Estimate total interest over a loan.
Credit Utilization Calculator
Calculate credit utilization.
Minimum Payment Calculator
Calculate percentage-based minimum payment.
Loan-to-Value Calculator
Calculate loan-to-value ratio.
Monthly Interest Calculator
Estimate one month of interest on a balance.
Debt Snowball Estimator
Estimate payoff time for one debt with a fixed payment.
Life & Family
10 calculatorsWedding Budget Calculator
Estimate wedding budget from major expenses.
Wedding Cost Per Guest Calculator
Calculate average wedding cost per guest.
Vacation Budget Calculator
Estimate total trip budget.
Trip Cost Per Day Calculator
Calculate average daily trip cost.
Car Affordability Calculator
Set a simple vehicle-price target from income.
Car Payment Calculator
Estimate monthly auto loan payment.
Childcare Cost Calculator
Estimate annual childcare costs.
College Savings Calculator
Estimate monthly savings needed for college.
Life Insurance Needs Calculator
Estimate simple income-replacement coverage needs.
Household Budget Calculator
Calculate monthly income remaining after expenses.
Everyday Money
10 calculatorsMonthly Expense Calculator
Add recurring expenses to estimate monthly spending.
Annual Expense Calculator
Convert monthly expenses into annual spending.
Moving Cost Calculator
Estimate the total cost of a move.
Cost of Living Calculator
Estimate annual living costs from monthly spending.
Pet Cost Calculator
Estimate annual pet ownership costs.
Subscription Cost Calculator
See how much subscriptions cost annually.
Savings Rate Calculator
Calculate percentage of income saved.
Financial Independence Calculator
Estimate a portfolio target from annual spending.
Net Income After Expenses Calculator
Calculate income remaining after expenses.
Rent Increase Calculator
Calculate future rent after annual increases.
Health & Fitness
10 calculatorsBMI Calculator
Calculate body mass index from height and weight.
BMR Calculator
Estimate basal metabolic rate.
Calorie Maintenance Calculator
Estimate daily calorie maintenance.
Calorie Deficit Calculator
Calculate a calorie target after a deficit.
Water Intake Calculator
Estimate daily water intake.
Protein Intake Calculator
Estimate daily protein target.
Running Pace Calculator
Calculate average running pace.
Running Speed Calculator
Calculate average running speed.
Steps to Miles Calculator
Estimate miles from steps and stride length.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method.
Business Metrics
10 calculatorsBreak-Even Sales Calculator
Find revenue needed to cover fixed costs.
Revenue Growth Calculator
Calculate revenue growth rate.
Gross Profit Calculator
Calculate gross profit and margin.
Customer Lifetime Value Calculator
Estimate customer lifetime value.
Conversion Rate Calculator
Calculate conversion rate.
Payback Period Calculator
Estimate investment payback period.
Profit Per Unit Calculator
Calculate profit per unit before fixed costs.
Price Increase Calculator
Calculate new price after an increase.
Market Share Calculator
Calculate percentage of total market.
Employee Cost Calculator
Estimate annual employer cost.
No accounts.
No nonsense.
Every calculator runs directly in your browser. There is no login, database or subscription required. Each page is a dedicated, indexable tool designed to answer one practical question quickly.