Roman Numerals: Convert and Avoid the Classic Traps
Learnable completely in ten minutes: additive reading in blocks, the two traps behind nearly every wrong answer, and where the numerals still live today.
Encoding & Number Guides
Binary, hex, Base64, Morse and the other ways data gets rewritten without changing meaning. What encoding is for, why it is not encryption, and the conversions programmers reach for daily.
IP Addresses in Binary and Hex (Subnetting Basics)
Subnetting is binary reading with network vocabulary: the AND test routers run billions of times a second, and why masks that look odd in decimal are clean in bits.
Braille on the Web: How the Translator Works
A writing system sized to a fingertip, carried inside Unicode: how the cell works, what instant translation honestly covers, and where transcribers take over.
Unicode vs UTF-8 vs UTF-16: Text Encoding Untangled
One sentence untangles it: Unicode assigns numbers, the UTFs write bytes. With real byte values, the emoji that breaks length checks, and the mojibake cure.
Gray Code: One Bit at a Time (and Why It Matters)
A volume knob between 7 and 8 can briefly read 15: the representation problem, the reordering that fixes it, and the one-line trick that converts.
Two's Complement: Negative Numbers in Binary
Binary has no minus sign, so negatives are a convention: the one that won lets the same circuit add and subtract, and its edge cases explain real bugs.
Bitwise AND, OR, XOR: What the Bits Are Doing
Three column-by-column rules sit under permissions, masks and checksums: CC and AA run through all three operations, then each rule gets its job title.
Convert BSON to JSON and Reshape CSV Data
To convert BSON to JSON, you decode the binary form a database stores into the readable text form developers work with. BSON is the format MongoDB uses internally, and a raw BSON dump is unreadable until you convert it. Alongside it, CSV files often need reshaping rather than converting: a wrong separator, columns and rows … Read more
Convert Base64 to JSON, CSV or Hex
To convert Base64 to JSON, you decode the Base64 text back into the structured data it was wrapped from. Base64 is often used to carry a JSON payload, a CSV file, or raw bytes through systems that only handle plain text, and the result is an unreadable string until you decode it. This guide shows … Read more
Convert Base64 to Image or PDF
To convert Base64 to an image, you decode the text back into the picture it was made from. Base64 is a way of writing binary data, like a photo or an icon, as plain text so it can travel inside HTML, CSS, JSON, or an email. That text looks like a long random string, but … Read more
Convert ASCII to Hex, Binary, Decimal and More
Converting ASCII to hex means taking each character of text and writing its number code in hexadecimal. The letter A has the ASCII code 65, which is 41 in hex, so the text A becomes 41. The same idea lets you convert ASCII to binary, decimal, octal, Unicode, and more, because every character is really … Read more
Convert Binary to Decimal, Hex and Octal
To convert binary to decimal, you add up the place values wherever the binary number has a 1. Binary 1101 has a 1 in the eight, four, and one positions, so it is 8 plus 4 plus 1, which is 13. The same binary string can also be written as hexadecimal or octal, and each … Read more