Articles that explain how each calculator works, when to use it, and how to interpret the results. Written for real use—loans, health metrics, maths, and dev tools.
Base64 is a way to turn binary data—images, files, or any sequence of bytes—into plain text. Not encrypted; just represented using only letters, numbers, and a couple of symbols so it can go wherever text is allowed. That’s useful when you need to send or store binary data in a place that only accepts text: […]
Area is what you get when you multiply length by length—square metres, square feet, acres, hectares. Property listings use one unit; you might think in another. A room is “20 square metres”; what’s that in square feet? A plot is “0.5 acres”; how many square metres is that? Getting area wrong can mean ordering too […]
“How old are you?” Usually we answer in years. “I’m 28.” But sometimes you need more than that. A form asks for age in years and months. A programme says you must be “18 years and 0 months” by a certain date. You’re curious how many days you’ve been alive, or you want to know […]
