Math Tools

Calculators for arithmetic, trigonometry, number bases and checksums, built for students, engineers and developers.

91 free tools in 4 subcategories

Arithmetic & Number Calculators (8) Solve everyday math problems instantly, including square roots, logarithms, exponents, factorials, Fibonacci numbers, rounding and prime checks. Error Detection & Checksum Tools (9) Calculate and verify parity bits, Hamming codes, and CRC checksums used for error detection and correction. Number Base Converters (30) Convert numbers between binary, decimal, hexadecimal, octal, Gray code, and base 36. Trigonometry & Angle Calculators (44) Calculate sine, cosine, tangent, and their inverses, convert angles between degrees, radians, arcminutes, arcseconds, milliradians, gradians, turns, and DMS, and solve circle arc, chord, and sector problems.
Octal To Gray Code Free online octal to Gray code converter. Convert octal (base 8) numbers to reflected Gray code with instant real-time results. Arcminutes To Radians Converter Convert arcminutes to radians with the formula radians = arcminutes × pi / 10,800. Octal To Decimal Free online octal to decimal converter. Convert numbers from octal (base 8) to decimal (base 10) with instant real-time calculation. Degrees To Arcminutes Converter Free online degrees to arcminutes converter. Convert degrees to minutes of arc instantly; one degree equals 60 arcminutes. Fibonacci Calculator Free online Fibonacci calculator. Compute the nth Fibonacci number from 0 to 99 instantly with exact sequence values. Square Root Calculator Free online square root calculator. Calculate the square root of any positive number instantly with high precision. Gray Code To Binary Free online Gray code to binary converter. Convert reflected Gray code values to standard binary numbers instantly. Hamming (7,4) Calculator Free online Hamming (7,4) code calculator and encoder. Encode 4 data bits into a 7-bit Hamming code for reliable transmission.
Unit Converters Convert between metric, imperial and engineering units for length, area, volume, weight, temperature, speed, pressure, energy, power, electric charge, frequency and digital storage. Text & Encoding Tools Clean, format, analyse and encode text online, from case conversion and word counts to Base64, hex, Unicode and URL encoding.