Base64

Encode text to Base64 or decode Base64 to plain text

Binary ↔ Hex

Convert between binary and hexadecimal representations

URL Encode

URL-encode or decode a string

HTML Entities

Encode or decode HTML special characters

Number Base

Convert between binary, octal, decimal and hexadecimal

Temperature

Convert between Celsius and Fahrenheit

Length

Convert between millimetres and inches

Weight

Convert between grams, kg, lb, oz, stone and more

Volume

Convert between ml, litres, pints, gallons and more

Area

Convert between m², ft², acres, hectares and more

Speed

Convert between mph, km/h, knots and m/s

Pressure

Convert between PSI, bar, pascals, atm and more

Energy

Convert between joules, calories, kWh, BTU and more

Fuel Consumption

Convert between MPG (UK/US), L/100km and km/L

Angle

Convert between degrees, radians, gradians and more

Power

Convert between watts, kW, horsepower, BTU/hr and more

Force

Convert between newtons, lbf, kgf, kilonewtons and more

Torque

Convert between N·m, lb·ft, lb·in and more

JSON Formatter

Format, minify or validate JSON

Regex Tester

Test a regex pattern against a string with match highlighting

Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes

Colour Converter

Convert between HEX, RGB and HSL with a live preview

Lorem Ipsum

Generate lorem ipsum placeholder text

UUID Generator

Generate random UUID v4 identifiers

Password Generator

Generate a secure random password with configurable rules

Timestamp Converter

Convert between Unix timestamps and readable dates

JWT Decoder

Decode a JWT token's header and payload

Data Size

Convert between bits, bytes, KB, MB, GB, TB, PB

Date Difference

Calculate days, weeks, months between two dates

Time Duration

Convert between seconds, minutes, hours, days and weeks

Time Zone

Convert a date & time between any two world time zones

Working Days

Count working days excluding weekends & UK bank holidays

VAT Calculator

Add or remove UK VAT at 20%, 5% or 0%

Percentage

X% of Y, what % is X of Y, percentage change

Tip Calculator

Calculate a tip and split the bill

Word Counter

Count words, characters, lines and paragraphs live

Case Converter

Convert between UPPER, lower, Title, camelCase, snake_case and more

Whitespace Cleaner

Remove extra spaces, trim lines and strip blank lines

Deduplicate Lines

Remove duplicate lines with optional sorting

Text Diff

Compare two blocks of text and highlight differences

Line Sorter

Sort lines alphabetically, in reverse, or randomly

Find & Replace

Find and replace text within a block of content

Profit Margin

Calculate profit margin and markup from cost and selling price

Markup Calculator

Calculate selling price from cost and markup percentage

Discount Calculator

Calculate the final price and saving after a discount

Break-Even

Calculate units needed to cover fixed and variable costs

Invoice Total

Build an invoice with line items, discount and VAT

Hourly Rate

Calculate hourly and day rate from an annual salary

UTM Builder

Build UTM-tagged URLs for Google Analytics campaign tracking

Reading Time

Estimate how long it takes to read a block of text

Word Frequency

Find the most common words in a block of text