Find what your field actually uses

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

Project investment growth with periodic contributions and compounding.

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

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

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

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.

Create random passwords locally with configurable length and character sets.

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

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

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

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

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

Keep image and video proportions when changing width or height.

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

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

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

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

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

Combine grades with different weights and calculate the final score.

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

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

Solve direct proportions quickly using three known values.

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

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

Generate one or more random integers within a selected range.

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

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.

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

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

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

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

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

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

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

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

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

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.

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

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

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

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