Calculators
48 tools
Forty-eight calculators, most of them for money. The borrowing group covers mortgages, refinancing, home affordability, closing costs, HELOCs, property tax, car payments, student loans, credit-card payoff, general debt payoff and amortization schedules. The earning and saving group covers paychecks, salary conversion between hourly, weekly and annual rates, freelance rates, 401(k) growth, retirement, compound interest, investment returns, net worth and college savings. The business group covers profit margin, break-even points, ROI and stock profit. Outside finance there are everyday calculators for percentages, tips, discounts, fuel cost, electricity cost, unit price comparison, concrete volume, aspect ratio, days between dates and age, plus academic tools for GPA and grades, and two work-time calculators that convert hours and minutes to decimal hours for payroll. All of them compute in your browser, so the figures you enter — salary, debt, savings — never leave your device.
Tools
Calculator
Free online calculator for basic and advanced math operations. Perform calculations with percentage, memory functions, and more.
Percentage Calculator
Five percentage calculations in one: a percentage of a number, an increase, a decrease, what percent one number is of another, and percent change.
Age Calculator
Calculate your exact age in years, months, days, hours, and seconds. Find out how old you are or the age difference between two dates.
Tip Calculator
Calculate tips and split bills easily among friends. Choose tip percentage and see per-person amounts for group dining.
Loan Calculator
Calculate monthly loan payments and total interest for any loan type. See amortization schedules and compare loan terms.
Discount Calculator
Calculate sale prices, discounts, and savings instantly. Find out how much you save with percentage or fixed amount discounts.
Fuel Cost Calculator
Work out the fuel, the cost and the CO2 for a trip from distance, consumption and price, in metric or imperial units.
Grade Calculator
Calculate weighted grades and final scores. Find out what grade you need on exams to achieve your target average.
Aspect Ratio Calculator
Calculate and convert aspect ratios for images, videos, and screens. Find dimensions, resize proportionally, and maintain quality.
Days Between Dates
Count the days between two dates, in calendar or business days, and read the same span in weeks, months, hours and years — or add days to a date.
Unit Price Comparator
Compare unit prices across products to find the best deal and save money shopping.
Electricity Cost Calculator
Calculate how much electricity your appliances cost per day, month, and year
Percentage Change Calculator
Calculate percentage change, percentage of a number, and what percent a number is of another
Investment Calculator
Calculate investment growth with compound interest over time. Plan your portfolio with different contribution scenarios.
Mortgage Calculator
Calculate monthly mortgage payments with principal, interest, taxes, and insurance. Compare loan terms and see amortization.
Tax Calculator
Simulate income tax calculations for different countries and scenarios. Compare tax brackets and optimize your tax strategy.
Gross to Net Salary Calculator
Convert gross salary to net salary for different countries and tax situations. Calculate take-home pay after deductions.
Retirement Calculator
Plan your retirement savings and estimate when you can retire comfortably. Factor in inflation, returns, and Social Security.
401(k) Calculator
Calculate your 401(k) retirement savings with employer matching contributions. Plan your future with our free retirement calculator tool.
Debt Payoff Calculator
Create a debt payoff strategy using avalanche or snowball methods. Calculate payoff timeline and interest savings.
Credit Card Payoff Calculator
Calculate how long to pay off credit card debt and total interest costs. Create a payment plan to become debt-free faster.
Net Worth Calculator
Track your assets and liabilities to calculate your total net worth. Monitor financial progress and set wealth goals.
Stock Profit Calculator
Calculate stock trading profits, returns, and percentage gains. Factor in commissions and see your real investment performance.
ROI Calculator
Work out return on investment as a percentage and a net gain, get the compound annual rate for a holding period, and rank several investments side by side.
Profit Margin Calculator
Work out gross profit, margin and markup from a cost and a selling price, then reverse it to find the price or the maximum cost for a target margin.
Break-Even Calculator
Calculate your business break-even point with fixed and variable costs. Find out how many units you need to sell to be profitable.
Rent vs Buy Calculator
Compare the true costs of renting versus buying a home. Factor in appreciation, maintenance, taxes, and opportunity cost.
House Affordability Calculator
Find out how much house you can afford based on income, debts, and down payment. Calculate your home buying budget.
Refinance Calculator
Calculate potential savings from refinancing your mortgage. Compare new rates, break-even points, and monthly payment changes.
Property Tax Calculator
Estimate your annual property taxes based on home value and local tax rates. Factor in exemptions and deductions.
Rental Property Calculator
Analyze rental property ROI, cash flow, and cap rate. Calculate potential returns on your real estate investment.
HELOC Calculator
Calculate your home equity line of credit (HELOC) options. Estimate borrowing power, monthly payments, and interest costs.
Closing Cost Calculator
Estimate closing costs when buying or selling a home. Calculate fees, taxes, and total amount needed at closing.
Student Loan Calculator
Calculate student loan payments, total interest, and payoff timeline. Compare repayment plans and find the best strategy.
GPA Calculator
Calculate your GPA on various scales (4.0, 5.0). Enter grades and credits to get your cumulative grade point average.
Scholarship Calculator
Estimate your financial aid and scholarship eligibility based on income, grades, and college costs. Plan your education funding.
Child Support Calculator
Estimate monthly child support with the income shares method: both incomes, number of children, custody arrangement, health insurance and childcare.
College Savings Calculator
Plan your college savings with 529 plan projections. Calculate how much to save monthly for your childs education.
Freelance Rate Calculator
Work out the hourly, daily, weekly and monthly rate your income target, expenses, tax rate and billable hours actually require.
Time to Decimal Calculator
Convert hours and minutes to the decimal hours payroll and invoicing need: 7:45 becomes 7.75.
Compound Interest Calculator
Calculate investment growth with compound interest.
Amortization Calculator
Calculate loan amortization schedules and payment breakdowns.
Car Payment Calculator
Calculate your monthly car payments and total loan cost.
Paycheck Calculator
Calculate your net pay after taxes and deductions. Estimate your take-home pay from gross salary.
Time Clock Calculator
Calculate work hours and overtime from time clock entries.
Fraction Calculator
Add, subtract, multiply and divide fractions.
Scientific Calculator
Scientific calculator with advanced functions, trigonometry and logarithms.
Concrete Calculator
Calculate how much concrete you need for your project.