useful tools

This is a collection of tools I've written for my own use and have made
available for anyone else who finds them of use.

**bmi calculator** - Calculate your Body Mass Index and get your normal weight range.

**commute time** - Learn how long your commute would be based on average speed

**escape HTML** - Escape the angle brackets in HTML so it can be published.

**QR code generator** - Generates the QR code needed to add a site to Google Authenticator

**sum** - Calculate the sum of a list of numbers.

**word value** - Calculate the sum of a word, with a = 1, b = 2, etc