Calculate trigonometric functions, solve triangles and convert between degrees and radians with this easy-to-use calculator.

Calculate percentages easily for discounts, taxes, growth rates, and more. Solve common percentage problems with this free online tool.

Secure your sensitive information with AES, TripleDES, Rabbit or RC4 encryption algorithms. Encrypt and decrypt text easily with a secret key.

Calculate your GPA, final exam score needed, and average grades with this comprehensive grade calculator. Perfect for students and teachers.

Convert any text to the NATO phonetic alphabet (Alpha, Bravo, Charlie) for clear verbal communication in aviation, military, or customer service.

Convert between binary, decimal and hexadecimal numbers instantly. Perfect for programmers and computer science students.

A collection of essential financial calculators including compound interest, loan amortization, depreciation, and gross margin calculations.

Instantly convert table data between CSV and JSON formats in your browser. Supports custom delimiters, headers, and table formatting.