Convert between metric and imperial, and work out fuel use and travel time for a journey.
What a journey really costs at the pump, with consumption and price per litre.
Add or remove GST at any rate, with the amount and the net both shown.
Estimated due date from the last period, plus the current week and trimester.
Open Graph and Twitter card tags from a form.
Every status code, searchable, with plain-English notes.
Generate robots.txt and a sitemap skeleton.
Spaced-repetition decks that live in your browser.
