Category
Software & Dev Tools
Programming, data, security, formatting, DevOps, and workflow helpers for technical teams.
Password Entropy Calculator
Estimate password entropy, search space, and brute-force time from length, character set size, and guess rate.
API Rate Limit Planner
Plan request throughput, worker count, backlog drain time, and spacing from an API rate limit.
Latency Budget Calculator
Add client, network, service, database, queue, and retry latency into a single request budget.
A/B Test Sample Size Calculator
Estimate per-variant sample size for a two-proportion A/B test from baseline rate, minimum detectable effect, confidence, and power.
Image Aspect Ratio Calculator
Resize images proportionally by calculating target width, target height, aspect ratio, and scale factor.
Hex / Binary / Decimal / Base64 Multi-Converter
Convert register values, byte payloads, and encoded data.
Regex Tester
Test expressions for C++ and embedded strings.
JSON Formatter/Validator
Format and validate JSON documents.
YAML to JSON Converter
Translate configuration files between YAML and JSON.
String Escaper/Unescaper for C Strings
Prepare text for firmware string literals.
Unix Timestamp to Human Date Converter
Convert epoch timestamps to readable dates.
Markdown Table Generator
Create clean Markdown tables from rows and columns.
Diff Checker
Compare two snippets of code or text.
Git Command Generator
Find commands for common Git recovery tasks.
SQL Query Formatter
Format SQL for review and debugging.
HTML Entity Encoder
Encode and decode HTML-safe text.
CSS Flexbox/Grid Playground
Experiment with common layout controls.
Variable Name Converter
Convert snake_case, camelCase, PascalCase, and more.
Hash Generator
Generate SHA-1 and SHA-256 digests.
UUID/GUID Generator
Create random identifiers for systems and tests.
Technical Lorem Ipsum Generator
Generate engineering-flavored placeholder copy.
Color Picker
Convert Hex, RGB, HSL, and CMYK color values.
C Struct Padding Calculator
Show how struct fields align in memory.
Endianness Swapper
Swap big-endian and little-endian byte order.
Crontab Generator
Build cron expressions from schedule controls.
Bcrypt Password Hasher
Generate bcrypt hashes for application testing.
Docker Run to Docker Compose Converter
Translate CLI containers into compose services.
Number to Words Converter
Spell numeric values in words.
Text to Morse Code
Encode text into Morse symbols.
Data URI Generator
Create data URIs from text or binary content.
Certificate Decoder
Inspect PEM and CRT certificate metadata.