30 Free Tools · No Login Required
Engineering Made Easy
Simplify your workflow with powerful conversion, encoding, and calculation tools — all in one place, free and instant.
Popular Tools
CRC Tool
Calculate CRC checksums with 100+ algorithms for data integrity verification
3D Rotation Converter
Convert between Quaternions, Euler Angles, and 3×3 Rotation Matrices bidirectionally with interactive 3D visualization
ASCII Converter
Convert text to ASCII codes and vice versa with multiple formats
Number Base Converter
Convert numbers between binary, decimal, hexadecimal, and octal with precision
Cron Expression Parser
Parse and validate cron expressions with next execution times, timezone support, and human-readable descriptions
Base32 Encoder/Decoder
Encode and decode Base32 data for TOTP, 2FA secrets, and human-readable encoding
Categories
All Tools (30)
3D Rotation Converter
Convert between Quaternions, Euler Angles, and 3×3 Rotation Matrices bidirectionally with interactive 3D visualization
ASCII Converter
Convert text to ASCII codes and vice versa with multiple formats
Base32 Encoder/Decoder
Encode and decode Base32 data for TOTP, 2FA secrets, and human-readable encoding
Base64 Encoder/Decoder
Encode and decode Base64 data with support for files and URLs
Color Converter & Palette Generator
Convert between HEX, RGB, HSL, HSV, CMYK color formats and generate harmonious palettes
CRC Tool
Calculate CRC checksums with 100+ algorithms for data integrity verification
Cron Expression Parser
Parse and validate cron expressions with next execution times, timezone support, and human-readable descriptions
Elapsed Time Calculator
Calculate duration between two dates in seconds, minutes, hours, days, months, and years
File Hash Calculator
Calculate MD5, SHA-1, SHA-256, SHA-512 hashes for files and text
Format Converter
Convert between YAML, JSON, and TOML formats for configuration files and data exchange
HTML Entity Converter
Encode and decode HTML entities for safe web content display
HTTP Request Code Generator
Build HTTP requests and generate code snippets for cURL, JavaScript, Python, Java, Go, and Rust with headers, auth, and body support
JSON Formatter & Converter
Format, validate, minify and beautify JSON data with error detection
JWT Encoder & Decoder
Create, decode, verify, and debug JSON Web Tokens with HMAC signature support and claim inspection
Markdown Previewer
Live Markdown editor with GFM support, tables, task lists, footnotes, TOC, and HTML export
Number Base Converter
Convert numbers between binary, decimal, hexadecimal, and octal with precision
Password Generator
Generate secure passwords, API keys, and tokens with customizable strength
QR Code Generator
Create custom QR codes for URLs, WiFi, vCards, email, phone, SMS with color customization and multiple formats
Regular Expression Tester
Test and debug regex patterns with live matching, group capture, and replacement
Text Case Converter
Convert between camelCase, PascalCase, snake_case, kebab-case, and more
Text Diff Comparator
Compare two texts line by line with side-by-side, inline, and unified diff views
Time Calculator
Add or subtract time from any date with full timezone and DST support. Calculate durations in seconds, minutes, hours, days, and weeks
Timestamp Log Sorter
Parse, sort, and convert timestamps in log files with auto-detection for ISO-8601, Unix, and RFC 2822 formats
TLS Certificate Analyzer
Parse and analyze X.509 TLS/SSL certificates with chain visualization, expiration tracking, cipher suite info, and security vulnerability detection
TOTP Generator
Generate and verify time-based one-time passwords (TOTP) compatible with Google Authenticator. Create QR codes, test 2FA implementation.
Unit Converter
Convert between length, weight, temperature, pressure, speed, area, volume, data size, time, and energy units
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates with timezone support
URL Encoder/Decoder
Encode and decode URLs for proper web transmission and parsing
UUID Generator
Generate RFC-compliant UUIDs (v4) for unique identification in applications
XML Formatter & Viewer
Format, validate, and visualize XML documents with tree view, syntax highlighting, and error detection