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Convert amounts using daily reference rates and display the rate date.

Convert a date and time between cities using the browser's time-zone rules.

Estimate fuel needed, total cost, and cost per person for a trip.

Add accommodation, food, transport, activities, and extra costs per traveler.

Check the weather and open an exact forecast for any city.

Enter a flight number and open its live tracking page directly.

Compare the current time across cities and time zones worldwide.

Find a percentage of a number or determine what percentage one value represents of another.

Measure the increase or decrease between an initial value and a final value.

Solve direct proportions quickly using three known values.

Get the mean, sum, minimum, maximum, and count for a list of values.

Combine grades with different weights and calculate the final score.

Reduce a fraction to lowest terms and display its decimal value.

Generate one or more random integers within a selected range.

Calculate years, months, and days between a birth date and a reference date.

Measure the interval between two dates in days, weeks, and calendar components.

Count Monday-to-Friday days and optionally exclude manually entered holidays.

Solve basic operations with parentheses, percentages, and keyboard input.

Estimate monthly payment, total paid, and interest for a fixed-rate loan.

Estimate a mortgage payment with optional down payment, property tax, and insurance.

Project investment growth with periodic contributions and compounding.

Find how much you would need to save each month to reach a target.

Organize income and expenses to see available cash and savings rate.

Add tax to a net price or extract tax from a tax-inclusive total.

Calculate final price, savings, and an optional second discount.

Calculate tip, total bill, and the amount per person.

Convert hourly, weekly, monthly, or annual pay using your work schedule.

Calculate profit, sales margin, and markup on cost in real time.

Find the units and sales needed to cover fixed and variable costs.

Convert bytes, KB, MB, GB, TB, and binary KiB, MiB, and GiB units.

Turn a title into a readable lowercase path separated by hyphens.

Create random passwords locally with configurable length and character sets.

Check your public IP, provider, time zone, and approximate location.

Validate and format JSON instantly without sending it to a server.

Create UUID v4 identifiers locally and generate several at once.

Convert UTF-8 text to Base64 and decode it back in real time.

Convert millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.

Convert grams, kilograms, tonnes, ounces, pounds, and stones.

Convert between Celsius, Fahrenheit, and Kelvin.

Convert square meters, square kilometers, hectares, square feet, acres, and more.

Convert liters, milliliters, cubic meters, cups, pints, and gallons.

Count words, characters, sentences, paragraphs, and approximate text density.

Estimate how long a text takes to read at a selected reading speed.

Transform text to uppercase, lowercase, title case, sentence case, or alternating case.

Build campaign URLs with UTM parameters while you fill the fields.

Keep image and video proportions when changing width or height.

Get a general body mass index estimate for adults.

Estimate adult maintenance energy from age, height, weight, and activity.

Split maintenance calories among protein, carbohydrates, and fat.

Estimate a general daily adult hydration reference from weight, activity, and climate.

Estimate appliance energy use and cost from power, usage time, and tariff.

Estimate cubic metres of concrete for slabs and add a waste allowance.

Estimate paint litres from area, openings, coverage, and number of coats.

Convert rise and run into slope percentage, angle, and ratio.

Solve any one of the three variables using the other two.

Add calendar or business days and exclude weekends and selected public holidays.