All Calculators
38 free calculators for finance, home improvement, and everyday math.
Financial
Calculators for loans, investments, budgeting, and more.
Compound Interest Calculator
See how your savings grow over time with the power of compound interest. Enter your principal, rate, and time horizon.
Mortgage Calculator
Calculate your monthly mortgage payment, total interest paid, and full amortization schedule.
50/30/20 Budget Calculator
Plan your monthly budget by allocating income across needs, wants, and savings using the 50/30/20 rule.
Retirement Calculator
Project your retirement savings, find the gap between what you have and what you need, and get a recommended monthly savings target.
Debt Payoff Calculator
See exactly how long it will take to pay off your debt and how much interest you can save by adding extra monthly payments.
Savings Goal Calculator
Calculate how much you need to save each month to reach your goal, and whether your current contributions will get you there on time.
Car Loan Calculator
Calculate your monthly car payment, total interest, and true cost of your auto loan — including trade-in value, sales tax, and a full amortization schedule.
Loan Comparison Calculator
Compare two loan offers side by side — monthly payment, total interest, and total cost — to instantly see which deal is truly better.
Salary to Hourly Calculator
Convert annual salary to hourly rate — or hourly to annual. See your hourly, daily, weekly, bi-weekly, and monthly pay in one table.
Inflation Calculator
See how inflation erodes purchasing power over time. Enter a starting amount, start year, end year, and inflation rate to find the future equivalent value.
Paycheck Calculator
Calculate your exact take-home pay after federal taxes, state taxes, Social Security, Medicare, 401(k), and health insurance deductions.
Rent vs. Buy Calculator
Compare the true long-term cost of renting vs. buying a home. See the break-even point, year-by-year comparison, and which option is better for your situation.
Investment Return Calculator
Project your portfolio growth with monthly contributions. See total returns, the real cost of management fees, and a year-by-year growth table.
Down Payment Calculator
Calculate how much down payment you need for a house, how long it will take to save, and whether you can avoid PMI. See your savings timeline with monthly contributions.
Credit Card Payoff Calculator
Find out exactly how long it will take to pay off your credit card, how much interest you will pay, and your payoff date. See the true cost of minimum payments.
Net Worth Calculator
Calculate your total net worth by entering your assets and liabilities. See your financial picture with an assets-vs-liabilities breakdown and debt-to-asset ratio.
CD Calculator
Calculate how much your certificate of deposit will earn at maturity. Enter your deposit, APY, and term to see total interest, value at maturity, and a full growth schedule.
Tax Bracket Calculator 2025
Calculate your 2025 federal income tax bracket, effective tax rate, and total tax owed. See exactly how your income is taxed across each bracket for any filing status.
Debt-to-Income Ratio Calculator
Calculate your front-end and back-end DTI ratios to see if you qualify for a mortgage. Enter your gross income and monthly debt payments for an instant assessment.
Emergency Fund Calculator
Calculate exactly how much you need in your emergency fund based on your monthly expenses. See your savings progress, gap remaining, and target date to reach your goal.
Refinance Calculator
Mortgage refinance calculator with break-even analysis. See your new payment, monthly savings, lifetime savings, and the exact month a refi pays for itself.
FIRE Calculator
Calculate your FIRE number, see when you can retire early, and visualize your path to financial independence with an interactive timeline and what-if scenarios.
Home & DIY
Calculators for home improvement and renovation projects.
Paint Coverage Calculator
Calculate how many gallons of paint you need for any room. Enter your wall dimensions and number of coats.
Square Footage Calculator
Calculate square footage for rectangles, triangles, circles, and L-shaped rooms. Convert to square meters and estimate project costs per square foot.
Everyday Math
Practical calculators for everyday calculations.
Tip Calculator
Quickly calculate tip amounts and split the bill evenly among any number of people.
Unit Converter
Convert between common units of length, weight, temperature, volume, and more.
Percentage Calculator
Calculate percentages three ways: find X% of Y, determine what percentage X is of Y, or calculate the percentage change from X to Y.
Age Calculator
Calculate exact age in years, months, and days from a birthdate, or find the date difference between two dates.
BMI Calculator
Calculate your Body Mass Index, see your BMI category, and find the healthy weight range for your height — in imperial or metric.
Electricity Cost Calculator
Calculate how much any appliance or device costs to run per day, month, and year. Choose from common presets or enter custom wattage.
Date Calculator
Find the number of days between two dates, add or subtract days from any date, and look up the day of the week for any date in history.
GPA Calculator
Calculate your GPA on a 4.0 scale. Add courses with letter grades (A through F) and credit hours to instantly compute your semester or cumulative GPA.
Fuel Cost Calculator
Calculate the gas cost for any road trip. Enter your distance, MPG, and gas price to see total fuel cost, cost per mile, and round-trip cost.
Discount Calculator
Calculate the sale price and amount saved for any discount. Supports stacked discounts, quick percentage buttons, and final price with sales tax.
Time Zone Converter
Convert time between any time zones. See the current time in 8 major cities, date-change indicators, and the time difference between zones.
Health
Calculators for nutrition, fitness, and health metrics.
Calorie Calculator (TDEE)
Calculate your BMR and Total Daily Energy Expenditure using the Mifflin-St Jeor equation. Get calorie targets for weight loss, maintenance, and muscle gain.
Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles. Enter your wake-up time or bedtime and get optimal sleep schedule options.
Running Pace Calculator
Calculate running pace, finish time, or distance covered. Get mile and km splits, equivalent race times for 5K, 10K, half marathon, and marathon.
Quick Answers
Pre-calculated results for common questions