Tools

Calculate your Body Mass Index (BMI), based on height and weight. It indicates if you are underweight, normal weight, overweight, or obese.

Discover and copy CSS color codes, sorted alphabetical. Click on a color button to get its CSS rules, including matching hover states.

Discover and copy CSS color codes sorted in color groups. Click on a color button to get its CSS rules, including matching hover states.

A simple currency converter. Set the conversion rate once. The page will remember your preferred currency and its rate.

A tool to calculate the difference between two dates. The difference is presented in different ways: Years, Months, Days, Hours, etc.

This Decimal Clock divides a day in 10 hours. Each hour is divided in 100 minutes and each minute has 100 seconds.

Lookup words and terms in the Merriam Webster dictionary. See the short definitions of a word or listen to the pronunciation.

A tool to design magic squares. Download a magic square and send it together with a birthday greeting.

Metric time with 10 hours in a day, 100 minutes in an hour, and 100 seconds in a minute. Noon is at 5:00.

A simple and free tool to make your own QR code. Download the code as a PNG file to share it with others.

SPELL IT is a tool to spell words using different code lists, such as Alfa Bravo Charlie, or Amsterdam Baltimore Casablanca.

Convert between three commonly used temperature scales: Celcius, Fahrenheit and Kelvin. Use the slider or pick a number.

Test your vocabulary with a database of over 40,000 English words, and find definitions for the words you didn't know yet.