Fast online calculators and everyday tools.
WeUtils.uk keeps common calculations simple: no sign-up, no clutter, just quick answers on any device.
Finance
Currency Converter
Convert currencies with live exchange rates. Free, fast and clutter-free converter.
Discount Calculator
Calculate final price and savings after applying single or multiple discounts instantly.
Reverse VAT calculator
Remove VAT from a gross amount and calculate net amount and VAT value instantly.
VAT calculator
Calculate VAT, net amount and gross total instantly.
Tip calculator
Work out the tip and split the total per person instantly.
Loan calculator
Calculate your monthly loan payment, total interest and total cost.
Compound interest calculator
See how your savings grow with compound interest and monthly contributions.
Mortgage calculator
Estimate your monthly mortgage payment with interest, property tax, insurance and a full amortization chart.
Gross to net salary calculator
Convert a gross salary to net take-home pay after income tax and social security.
Net to gross salary calculator
Work out the gross salary needed for a target net pay after deductions.
Date & time
Age calculator
Calculate current age from a date of birth.
Date difference calculator
Calculate days and approximate months between two dates.
Day of the week calculator
Find out what day of the week you were born and your exact age.
Age difference calculator
Work out the exact age gap between two people in years, months and days.
Time zone converter
Convert a time between time zones and see the current time around the world. Plan meetings across countries.
Unix timestamp converter
Convert a Unix timestamp to a date and back, with UTC and ISO output.
Math
BMI Calculator
Calculate your Body Mass Index (BMI) instantly and check WHO categories.
Percentage calculator
Calculate what percentage one number is of another.
Random number generator
Generate random numbers within a range, instantly and locally.
GCD and LCM calculator
Find the GCD and LCM of two or more numbers instantly.
Prime number checker
Check if a number is prime and see its prime factors.
Factorial calculator
Calculate the factorial (n!) of a number, exact for large values.
Binary / decimal / hex converter
Convert numbers between binary, decimal, hexadecimal and octal.
Text
Developer
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to plain text online and locally.
JSON Formatter
Format, validate, prettify, and minify your JSON data in real-time in your browser.
Password Generator
Generate secure, random passwords with custom length and character sets instantly in your browser.
QR Code Generator
Create custom, downloadable QR codes for URLs, text, Wi-Fi or email instantly.
UUID Generator
Generate single or bulk secure RFC4122 version 4 UUIDs instantly in your browser.
URL encoder / decoder
Encode or decode URLs and query strings (percent-encoding) instantly.
Hash generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes of any text locally.
HTML entity encoder / decoder
Encode text to HTML entities or decode entities to plain text.
Converters
cm to pixels calculator
Calculate how many pixels you need for a final size in cm or inches at any PPI/DPI, with aspect ratio checks for photo printing.
Pixel to cm converter
Convert image pixels to cm, mm or inches using PPI/DPI. Select an image locally to read dimensions without uploading it.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit and Kelvin instantly.
Color converter
Convert colors between HEX, RGB and HSL instantly with a live picker.
Length converter
Length converter (cm, m, inches, feet, miles). online converter.
Weight converter
Weight converter (kg, g, pounds, ounces, stone). online converter.
Volume converter
Volume converter (litres, mL, gallons, cups, pints). online converter.
Speed converter
Speed converter (km/h, mph, m/s, knots). online converter.
Area converter
Area converter (m², ft², acres, hectares). online converter.