Free Calculators & Converters
Calculate everyday numbers and convert units or currencies with free, focused online utilities.
9 tools · no sign-up · free to use
Online Calculator
A clean, iPhone-style calculator that works with your keyboard and numpad. Percent, sign, history, copy — no ads, nothing installed.
Open free tool →Unit Converter
Convert between every common unit — metric and imperial, cooking, data, pressure, energy, speed, fuel economy — instantly, in your browser.
Open free tool →Currency Converter
Convert between 160+ currencies with daily reference rates. USD, CAD, EUR, GBP, JPY, CNY, INR and more — free, no ads, no signup.
Open free tool →Percentage Calculator
Every common percentage question on one page, each showing the formula with your numbers. Plus fraction ↔ decimal ↔ percent.
Open free tool →Discount Calculator
Sale price and savings from % off, stacked discounts and coupons, with sales tax. Or work back to the original price.
Open free tool →Salary to Hourly Calculator
Convert pay between hourly, weekly, biweekly, semi-monthly, monthly and annual. Plus an overtime calculator with Ontario rules.
Open free tool →Date Calculator
Days between dates, business days excluding Canadian and US holidays, add or subtract days, and age.
Open free tool →Time Zone Converter
Convert a time across cities with DST handled, and find meeting hours that suit everyone. Shareable link.
Open free tool →Online Timer
Countdown timer with alarm, stopwatch with laps and a Pomodoro timer, with a big fullscreen display.
Open free tool →