Developer & DevOps for Student

28 developer & devops tools hand-picked for Student.

Number Base Converter

Number base converter — binary, octal, decimal, hex, and any base 2-36. Bitwise too.
BCD Converter

Decimal ⇄ binary coded decimal in 8421 code, with packed view, hex and per-digit nibbles, all in your browser
Binary Calculator

Add, subtract, multiply and divide two binary numbers, exact BigInt math, results in binary, decimal, hex and octal, browser-only
Chinese Idiom Search

800+ everyday chengyu — pinyin, origin, usage.
Collatz Conjecture Calculator

Enter any positive integer, watch 3n+1 run to 1 — full hailstone sequence, stopping time, and peak, exact via BigInt
CSS Flexbox Generator

Generate production-ready flexbox CSS from visual controls — pick a layout preset, tweak properties, copy CSS, Tailwind, or React inline styles in one click.
CSS Flexbox Playground

Visual CSS Flexbox sandbox — tweak container and item properties live, see the layout update instantly, copy ready-to-use CSS.
CSV to LaTeX Table

Paste CSV, get a compile-ready LaTeX tabular with booktabs, l/c/r alignment, a table environment and safe escaping, all in your browser
CSV Transposer

Flip CSV rows and columns from uploaded files or pasted data, with ragged-row handling and local output.
Factorial Calculator

Exact n! for any non-negative integer, with digit count, trailing zeros, double factorial and scientific notation, computed on BigInt right in your browser
Fibonacci Generator

First N terms, a range, or the nth value, with running sum and golden-ratio convergence, exact via BigInt, all in your browser
Gray Code Converter

Decimal, binary and Gray code three ways, gray = n^(n>>1), one click each side, all in your browser
Hamming Code Calculator

Encode, decode and error-correct Hamming (SEC / SECDED) codes — syndrome, parity coverage, one-click copy — browser-only
Hamming Distance Calculator

Count the differing positions between two equal-length inputs, in characters, binary bits or integer XOR, all in your browser
IEEE 754 Floating Point Converter

Decimal to single and double precision bits, sign exponent mantissa split, full hex and binary, all in your browser
ISSN Validator

Check an 8-digit journal ISSN with the MOD 11 check digit — single or batch, computes the check character, one-click copy, browser-only
Markdown Cheat Sheet

Markdown syntax cheat sheet — every rule with live preview side by side, GFM + flavors.
Markdown Link Extractor

Upload Markdown and extract inline links, reference links, images, and bare URLs into a local CSV.
Modular Exponentiation Calculator

Compute a^b mod m with fast exponentiation and BigInt, plus modular inverse and step-by-step squaring, all in your browser
ORCID Validator

Check an ORCID iD check digit with ISO 7064 MOD 11-2, complete the check digit from the first 15 digits, validate a whole list, all in your browser
Password Strength Checker

Check password strength — entropy, time-to-crack, breach pattern check (offline).
Prime Factorization Calculator

Break any integer into prime factors with exponent form, divisor count and full divisor list, exact BigInt math, browser-only
Python Cheatsheet

Python cheat sheet — 100+ idiomatic Python snippets for string, list, dict, file, async, with real examples.
Regex Cheatsheet

Interactive regex cheat sheet — quick reference for every flavor (JS, Python, PCRE).
SQL Cheatsheet

SQL cheat sheet — 100+ statements covering SELECT, JOIN, window functions, indexing, MySQL/PostgreSQL/SQLite differences.
Text File Cleaner

Upload a text file and remove BOM, null bytes, trailing spaces, and excessive final blank lines locally.
Text File Line Ending Converter

Upload or paste text and convert CRLF, CR, and LF endings to a consistent LF or CRLF output locally.
Two's Complement Converter

Signed decimal to two's complement binary and hex at 4, 8, 16, 32, 64 bits, with sign-magnitude and one's-complement steps, runs in your browser