Converters

Number system converters

41 tools

Binary, hex, decimal, octal, fractions, and angles.

ASCII text to binary Convert ASCII text to binary. Runs locally in your browser. Free online tool — no sign-up. Clear formulas and worked examples. No account needed.
ASCII to Hex converter Convert ASCII text to hexadecimal. Each character → code point → two hex digits. Positional base-16 method, examples, and printable chart. Try it free.
ASCII, Hex, Binary, Decimal converter ASCII, Hex, Binary, Decimal converter with clear formulas, units, and examples. Runs locally in your browser. Free online tool — no sign-up.
Binary convert Binary number conversion hub: convert base-2 to decimal, hexadecimal, and ASCII. Positional notation overview and links to dedicated calculators.
Binary converter Convert with the free Binary Converter on CalculatorX. Exact factors, formulas, worked examples, and a conversion chart. Runs locally in your browser.
Binary to ASCII text Convert binary to ASCII text. Split into 8-bit bytes, interpret with positional base-2, map code points to characters. Runs locally in your browser.
Binary to Decimal converter Binary to Decimal converter. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Runs locally in your browser.
Binary to Hex converter Binary to Hex converter. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Runs locally in your browser.
Date to Roman numerals Convert calendar dates to Roman numerals. Convert year, month, and day integers with standard Roman rules (I, V, X, L, C, D, M). No account needed.
Decimal convert Decimal (base 10) conversion hub: to binary, octal, hex, fraction, and percent. Runs locally in your browser. Free online tool — no sign-up. Try it free.
Decimal degrees to DMS Convert decimal degrees to degrees, minutes, seconds. Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Decimal to Binary converter Convert decimal (base 10) to binary (base 2). Runs locally in your browser. Free online tool — no sign-up. Clear formulas and worked examples. Try it free.
Decimal to Fraction conversion Decimal to Fraction conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Decimal to Hex converter Convert decimal (base 10) to hexadecimal (base 16). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Decimal to Octal converter Convert decimal (base 10) to octal (base 8). Use repeated division by 8 or binary 3-bit grouping. Examples and conversion table. Works offline-ready.
Decimal to percent conversion Convert decimals to percents. Formula: percent = decimal × 100%. Worked examples, mental tips, and a conversion table. Runs locally in your browser.
Degrees to Radians conversion Convert degrees to radians. Exact relation: π rad = 180°. Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
DMS to decimal degrees Convert degrees, minutes, seconds (DMS) to decimal degrees. Free online tool — no sign-up. Mobile-friendly and privacy-first. Runs locally in your browser.
Fraction convert Fraction conversion hub: fraction to decimal (divide) and fraction to percent (×100%). Free online tool — no sign-up. Runs locally in your browser.
Fraction to Decimal conversion Convert fractions to decimals. Method 1: scale denominator to a power of 10. Method 2: divide numerator by denominator. Runs locally in your browser.
Fraction to percent conversion Convert fractions to percents. Formula: (a/b)×100%. Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Hex convert Hex convert: convert units with clear factors and examples. Fast local calculation on CalculatorX. Runs locally in your browser. Try it free.
Hex to ASCII text converter Convert hexadecimal to ASCII text. Pair hex digits into bytes, convert with base-16 positional notation, map to characters. Runs locally in your browser.
Hex to Binary converter Convert hexadecimal to binary. Each hex digit expands to a 4-bit nibble. Digit map, worked examples, and conversion table. Runs locally in your browser.
Hex to Decimal converter Hex to Decimal converter. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Runs locally in your browser.
Hex, decimal, octal, binary converter Convert among hexadecimal, decimal, octal, and binary. Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Number base converter Convert integers between number bases (binary, octal, decimal, hex, and more). Use positional notation and divide-by-radix; examples for 2, 8, 10, 16.
Octal to Decimal converter Convert octal (base 8) to decimal (base 10). Formula: sum digit × 8ⁿ. Runs locally in your browser. Free online tool — no sign-up. Fast and free.
Percent Convert Convert percentages to decimals, fractions, and ppm. Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Percent to decimal conversion Convert percent (%) to a decimal. Formula: decimal = percent ÷ 100. Worked examples and a percent↔decimal chart. Switch % → decimal or decimal → %.
Percent to fraction conversion Percent to fraction conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Percent to ppm Conversion Convert percent (%) to parts-per million (ppm). Exact: 1% = 10 000 ppm. Formula, worked examples, and a conversion chart. Runs locally in your browser.
ppb to ppm conversion Convert parts-per billion (ppb) to parts-per million (ppm). Free online tool — no sign-up. Mobile-friendly and privacy-first. Runs locally in your browser.
ppm converter Convert with the free ppm Converter on CalculatorX. Exact factors, formulas, worked examples, and a conversion chart. Runs locally in your browser.
ppm to percent conversion Convert parts-per million (ppm) to percent (%). Exact: 1 ppm = 0.0001%. Formula ppm ÷ 10 000, examples, and a chart. Runs locally in your browser.
ppm to ppb conversion Convert parts-per million (ppm) to parts-per billion (ppb). Free online tool — no sign-up. Mobile-friendly and privacy-first. Runs locally in your browser.
ppm to ppt conversion Convert parts-per million (ppm) to parts-per trillion (ppt). Free online tool — no sign-up. Built for quick, accurate checks. Runs locally in your browser.
ppt to ppm conversion Convert parts-per trillion (ppt) to parts-per million (ppm). Free online tool — no sign-up. Built for quick, accurate checks. Runs locally in your browser.
Radians to Degrees conversion Convert radians to degrees. Exact: π rad = 180°. Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Roman numerals converter Convert between roman numerals and numbers. Runs locally in your browser. Free online tool — no sign-up. Clear formulas and worked examples. Try it free.
Scientific Notation Converter Scientific Notation Converter with clear formulas, units, and examples. Runs locally in your browser. Free online tool — no sign-up. Try it free.