Everyday tools
Quick tools for everyday jobs: calculate percentages and ages, convert units and time zones, read text aloud, count characters, take notes, pick a random name, and make or scan barcodes. Everything runs in your browser.
Percentage calculator
X% of Y, percentage change, and adding or removing a percent.
Age calculator
Exact age in years, months and days, and your next birthday.
Unit converter
Length, weight, temperature, area, volume, speed and more.
Time zone converter
See a time in New York, London, Dubai, Dhaka, Tokyo and more.
Text to speech
Read any text aloud in natural voices, in many languages.
Character counter
Check captions, posts and SEO titles against every limit.
Online notepad
Quick notes that save in your browser automatically.
Spin the wheel
Random name picker wheel for classes, giveaways and games.
Barcode generator
Code 128, EAN-13 and UPC-A barcodes as PNG or SVG.
QR code scanner
Read QR codes and barcodes with your camera or a photo.
Guides
- Barcode types explained: EAN-13, UPC-A and Code 128
Barcode types explained: EAN-13, UPC-A and Code 128, which to use for products, stock and shipping, how check digits work, and how to make and print barcodes that scan.
- How to calculate percentages (with examples)
How to calculate percentages: X% of a number, what percent one number is of another, percentage increase and decrease, discounts and adding tax, with worked examples.
- How to calculate your exact age
How to calculate exact age in years, months and days from a date of birth, find your age on a specific date, and count total days lived. Includes leap-year rules.
- How to convert time zones and plan meetings across countries
How to convert a time between time zones, plan meetings across countries, and handle daylight saving time and half-hour offsets, with a free world clock.
- How to pick a random name or winner fairly
Pick a random name or winner fairly with a spinning wheel: classroom picks, giveaways, teams and decisions. How to make it fair and pick several winners.
- How to scan a QR code (on a phone, laptop or from a screenshot)
How to scan a QR code on a phone, laptop or from a screenshot, read barcodes, and check where a QR code links before opening it to avoid scams.
- How to use an online notepad that saves automatically
Use a free online notepad that saves notes automatically in your browser: quick lists, drafts and ideas, with no account, plus how to keep notes safe and move them between devices.
- How to use text to speech to read any text aloud
Turn text into speech for free in your browser: listen to articles, notes and your own writing in many languages, change speed and pitch, and add more voices to your device.
- Unit conversion chart: cm, inches, kg, lbs, °C, °F and more
A quick unit conversion chart for length, weight, temperature, volume and data, with the exact factors (inches to cm, lbs to kg, °F to °C) and a free converter for any value.