Calculators
Everyday calculators for money, dates, health and more.
Age Calculator Free live age calculator: enter your date of birth and instantly see your exact age in years, months and days, the day you were born, a countdown to your next birthday, lifetime totals and milestones. Runs in your browser. Percentage Calculator Free online percentage calculator with four modes. Find X% of Y, what percent one number is of another, percentage change, and add or subtract a percent, live in your browser. No sign-up. BMI Calculator Free BMI calculator in metric or imperial (kg/cm or lb/ft-in). Get your Body Mass Index, weight category, a visual scale and the healthy weight range for your height, instantly in your browser. Loan Calculator Free loan calculator with a live amortization schedule, payoff chart and extra-payment savings. See your monthly payment, total interest and total repaid instantly. Runs in your browser, no sign-up. GPA Calculator Free live GPA calculator. Add a row per course with its credits and letter grade, pick a 4.0, 4.3 or weighted scale, and see your term and cumulative GPA update instantly in your browser. No sign-up, private, works on any device. Mortgage Calculator Free live mortgage calculator: enter home price, down payment, rate, term, property tax and insurance to see a realistic total monthly payment, amortization schedule, payoff chart and extra-payment savings. Runs in your browser. Tip Calculator Free live tip calculator to work out gratuity and split the bill fast. Enter the bill, tap a tip preset or slider, split between any number of people, and optionally round up. Updates instantly in your browser. Discount Calculator Free live discount calculator: enter the original price and one or more percent-off discounts to instantly see the final price, how much you save, and the effective discount rate. Add tax after the discount too. Runs in your browser. Date Difference Calculator Free online date difference calculator. Pick two dates and instantly see the exact years, months and days between them, plus totals in weeks, months and years. Optional business-days mode. Runs in your browser, private, no sign-up. VAT Calculator Free VAT calculator to add or remove VAT and sales tax at any rate. Enter an amount, set the rate, and get net, VAT, and gross instantly in your browser. Average Calculator Free average calculator: paste numbers and instantly get the mean, median, mode, sum and count. Works in your browser, no sign-up, data stays private. Time Duration Calculator Free Time Duration Calculator: enter a start and end time in HH:MM and instantly get the hours and minutes between them. Runs in your browser, no sign-up. Compound Interest Calculate how your savings or investments grow over time. Enter a starting amount, annual rate, years, compound frequency, and optional regular contributions to see your final balance split into starting amount, contributions, and interest, plus a year-by-year table and growth chart. Simple Interest Free simple interest calculator to work out the interest and final balance on a loan or deposit. Enter principal, annual rate, and years for instant results. Aspect Ratio Calculator Calculate aspect ratios fast. Enter a width and height to get the simplified ratio like 16:9, the decimal value, and the matching height for any new width. Margin Calculator Free profit margin calculator. Enter your cost and selling price to instantly see profit, profit margin percent, and markup percent right in your browser. Ratio Calculator Free online ratio calculator that simplifies any ratio, shows its decimal value, and scales it to a new size. Reduce 16:9 in one click, no sign-up. Sales Tax Calculator Free sales tax calculator that adds US-style sales tax on top of any price. Enter the amount and rate to get the total, the tax amount, and the pre-tax price. Unit Price Calculator Compare two products by unit price and instantly see which one is the better value. Enter each item's price and size to find the real cost per unit fast. Grade Calculator Free weighted grade calculator: enter your scores and their weights to instantly find your overall grade as a percentage. Runs in your browser, no sign-up. ROI Calculator Free ROI calculator: enter your initial investment and final value to instantly see your return on investment as a percentage and your net profit in money. Break-Even Calculator Free break-even calculator that finds how many units you must sell to cover costs. Enter fixed costs, price, and variable cost to get units and revenue. Savings Goal Calculator Find out how long it takes to reach a savings goal. Enter your target, what you have saved, and your monthly contribution to see the months and years needed. Pace Calculator Calculate your running pace per kilometer or mile and your average speed from any distance and time. Free, fast, and works for training runs or races. Speed Distance Time Free Speed Distance Time Calculator: enter any two of distance, speed, and time, and instantly solve for the missing third value. Runs in your browser, no sign-up. Fuel Cost Calculator Free fuel cost calculator that works out the total cost of a trip and the litres you will burn. Enter distance, consumption, and fuel price for an instant figure. Add/Subtract Days Free online date calculator to add or subtract days from any date. Enter a start date, pick add or subtract, set the days, and get the result plus weekday. Business Days Calculator Free business days calculator that also subtracts public holidays. It auto-detects your country (or pick from 200+), and every holiday is editable. Runs in your browser.