Blog
Developer guides, tips, and best practices
VAT Calculator: How to Calculate Value Added Tax
Learn how VAT works, how to calculate VAT-inclusive and VAT-exclusive prices, and use our free online VAT calculator.
Percentage Calculator: Formulas, Examples & Tips
Master percentage calculations with clear formulas, practical examples, and our free online percentage calculator tool.
Age Calculator: Calculate Your Exact Age in Seconds
Learn how age calculation works and find your exact age in years, months, days, hours, and minutes with our free tool.
BMI Calculator: Understanding Body Mass Index
Learn what BMI is, how it's calculated, what the ranges mean, and use our free BMI calculator for instant results.
Unix Timestamp Explained: What It Is and How to Convert It
Understand Unix timestamps, how they work, and how to convert between human-readable dates and epoch time.
PX to REM Converter: A CSS Units Guide
Learn the difference between px and rem CSS units, when to use each, and convert between them with our free tool.
Turkish ID Number Validation: Algorithm and Rules
Learn how Turkish ID (TC Kimlik) number validation works, the algorithm behind it, and validate numbers with our free tool.
IBAN Validation: How International Bank Account Numbers Work
Learn the structure of IBAN numbers, how validation works with the MOD-97 algorithm, and validate IBANs with our free tool.
Credit Card Validation: Understanding the Luhn Algorithm
Learn how credit card numbers are validated using the Luhn algorithm, card number patterns, and use our free validator tool.
Email Validation: Rules, Regex Patterns, and Best Practices
Learn how email validation works, common regex patterns, RFC rules, and validate email addresses with our free tool.
Temperature Converter: Celsius, Fahrenheit & Kelvin Explained
Learn how to convert between Celsius, Fahrenheit, and Kelvin with formulas, tables, and our free temperature converter tool.
Byte Converter: Understanding Digital Storage Units
Learn the difference between bytes, kilobytes, megabytes, and more. Convert between storage units with our free byte converter.
JSON Path Finder: Navigate and Query JSON Data
Learn how to use JSON Path expressions to navigate and extract data from complex JSON structures with our free tool.
ROT13 Encoder: The Simple Letter Substitution Cipher
Learn how ROT13 works, its history, use cases, and encode or decode text with our free ROT13 tool.
Morse Code Converter: Learn and Translate Morse Code
Learn Morse code patterns, its history, and convert text to Morse code or decode Morse back to text with our free tool.
Interest Calculator: Simple and Compound Interest Explained
Learn the difference between simple and compound interest, formulas, and calculate interest with our free online tool.
Area Calculator: Formulas for Every Shape
Learn how to calculate the area of common shapes with formulas, examples, and our free online area calculator tool.
Date Difference Calculator: Days Between Two Dates
Calculate the exact number of days, weeks, months, and years between any two dates with our free date difference tool.
ASCII Table: Complete Character Reference for Developers
A complete ASCII table reference with decimal, hex, octal, and character values. Essential for developers and programmers.
Epoch Converter: Convert Between Epoch Time and Dates
Learn what epoch time is, how it differs from Unix timestamps, and convert between epoch and human dates with our free tool.
Hash Algorithms Compared: MD5, SHA-1, SHA-256, SHA-512
Compare popular hash algorithms - their strengths, weaknesses, and when to use each one.
Regular Expressions: A Beginner's Guide
Learn the fundamentals of regular expressions with practical examples for common text patterns.
Understanding JWT Tokens: Structure and Security
A developer's guide to JSON Web Tokens - how they work, their structure, and security considerations.
JSON Formatting Best Practices for Developers
Master JSON formatting with best practices for readability, validation, and common pitfalls to avoid.
What is Base64 Encoding? A Complete Guide
Learn what Base64 encoding is, how it works, and when to use it in web development and data transfer.