Free Number & Data Tools
Base conversion, statistics, fractions, CSV/JSON, ASCII and more.
Number to Words Converter
Convert numbers to words in English — including currency and ordinal formats.
💻Binary / Octal / Hex Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly.
🏛️Roman Numeral Converter
Convert numbers to Roman numerals and back with step-by-step breakdown.
🔍Prime Number Checker
Check if a number is prime, find factors, and list primes in a range.
📊Statistics Calculator
Calculate mean, median, mode, standard deviation, and more from any dataset.
📄CSV to JSON Converter
Convert CSV to JSON and JSON to CSV with file upload support.
🔤ASCII Table & Character Lookup
Full ASCII reference table with character lookup and all encoding formats.
➗Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.
💾Data Storage Converter
Convert between bits, bytes, KB, MB, GB, TB with real-world comparisons.
📐Aspect Ratio Calculator
Calculate, scale, and convert aspect ratios for video, photo, and design.