Number, Math & Measurement Tools
The Number Conversion Toolkit gathers converters for numeral systems, fractions, percentages, angles and floating-point values. Every tool runs locally in your browser and shows the working behind each result, so you can verify conversions instead of trusting a black box.
23 free tools in this category.
Number base converters
Number Converter Converting an integer between radices by repeated division and place-value expansion. Number Base Converter General base-to-base integer conversion across radices 2 through 36. Hex to Decimal Converter Expanding a base-16 numeral into its base-10 value. Decimal to Hex Converter Encoding a base-10 integer as a base-16 numeral. Decimal to Binary Converter Representing a base-10 integer in base-2 by repeated division. Binary to Decimal Converter Evaluating a base-2 numeral as a base-10 integer via place value. Hex to Binary Converter Translating base-16 numerals to base-2 bit strings. Binary to Hex Converter Encoding a base-2 bit string as a base-16 numeral. Octal Converter Converting base-8 numerals to and from other radices. BCD Converter An encoding where each decimal digit is stored as a separate four-bit binary value. Two's Complement Converter The standard scheme for encoding signed integers in binary using the most significant bit as sign.
Fractions, percentages & rounding
Fraction to Decimal Converter Dividing a numerator by a denominator to produce a decimal value. Decimal to Fraction Converter Expressing a decimal as a reduced ratio of two integers. Fractional Inches to Decimal Converter Converting imperial fractional measurements into decimal inches. Percent to Decimal Converter Dividing a percentage value by 100 to obtain a decimal fraction. Decimal to Percent Converter Multiplying a decimal fraction by 100 to obtain a percentage. Decimal Rounding Calculator Reducing a number to a target precision using a rounding rule.
Time, angle & notation converters
Minutes to Decimal Converter Dividing minutes by sixty to express time as decimal hours. Decimal to Minutes Converter Converting decimal hours into whole hours and minutes. Decimal Hours Converter Two-way conversion between decimal hours and hours-plus-minutes. DMS to Decimal Degrees Converter Converting sexagesimal angle notation to and from decimal degrees. Floating Point Converter The binary representation of real numbers using sign, exponent and fraction fields. Scientific Notation Converter Expressing a number as a coefficient multiplied by a power of ten.