Concrete Calculator

🔢 Base Converter Convert numbers between binary, octal, decimal, hex 💯 Number Format Format numbers with thousands separators 📊 Percent Calculator Calculate percentage increase, decrease and ratio ⚖ BMI Calculator Calculate BMI from height and weight 🎲 Random Number Generate random numbers in a specified range ⚡ Bitwise Calculator AND, OR, XOR, NOT, shift operations 📐 Ratio Calculator Calculate proportional scaling 🔢 Prime Checker Check if a number is prime, list primes 🌀 Fibonacci Sequence Generate Fibonacci sequences 🔢 Factorial Calculator Calculate large integer factorials 💰 Loan Calculator Calculate monthly payment and total interest 💵 Tip Calculator Calculate tip and per-person split