BinaryDecimal

Short, clear explainers about the numbers in your life: your lab results, your fitness, your money, your passwords and the code you write.

Each video takes one idea you've heard of and shows how it actually works, with animation instead of jargon. Why your A1C remembers last month more than three months ago. How to count to 1,023 on your fingers. Why four plain words beat a "strong" password.

Health videos cite their sources on screen and in the description. They explain; they aren't medical advice. Talk to your doctor about your own results.

Every video comes with a free tool at binarydecimal.com, so you can try it with your own numbers. More than 80 calculators, converters and tools: free, no sign-up, and most run entirely in your browser.

New Shorts every week.