Numbers & Bases
Binary, hexadecimal, octal and decimal conversion, text encoding, fractions, percentages, Roman numerals and more, computed in your browser with nothing uploaded.
ppm to Percent Conversion
Type a parts-per-million value, press Convert, and read the percentage (ppm divided by 10000).
Percent to ppm Conversion
Type a percent value and get the equivalent in parts per million, multiplied by 10000.
ppb to ppm Converter
Convert parts per billion to parts per million by dividing by 1000, with the result one click away from your clipboard.
ppm to ppb Conversion
Multiply the ppm value by 1000 to get parts per billion, in one field with the answer shown below.
ppm to ppt Conversion
Multiply by 1,000,000 to turn parts per million into parts per trillion.
Parts per Trillion to Parts per Million Conversion
Change parts per trillion into parts per million by dividing by 1,000,000 - a quick ppt to ppm conversion that runs in your browser.
Binary to Decimal Converter
Turn a binary number into decimal, with hexadecimal and octal shown as well. Signs, fractional points and several numbers at once are accepted.
Binary to Hex Converter
Convert binary to hexadecimal, with the decimal and octal values shown. Takes a sign, a fractional point and space-separated lists.
Binary to Octal Converter
Turn binary numbers into octal in your browser, with decimal and hexadecimal alongside.
Decimal to Binary Converter
Type a decimal number and get its binary form, with the hexadecimal and octal values shown beside it.
Decimal to Hexadecimal Converter
Turn a decimal number into hexadecimal, with binary and octal shown alongside. Signs, fractions and several numbers at once work.
Decimal to Octal Converter
Turn a decimal number into octal in one field, with the binary and hexadecimal forms shown alongside, worked out in your browser.
Hex to Binary Converter
Paste a hexadecimal number and read the binary form, with decimal and octal alongside. Everything is computed in the browser.
Hexadecimal to Decimal Converter
Turn a hexadecimal number into its decimal value, with binary and octal shown too, all computed in your browser.
Hex to Octal Converter
Turn a hexadecimal number into octal, with the binary and decimal forms shown beside it.
Octal to Binary Converter
Turn an octal number into its binary form, with the decimal and hexadecimal forms shown alongside it.
Octal to Decimal Converter
Convert octal numbers to decimal, with the binary and hexadecimal forms shown, all in your browser.
Octal to Hex Converter
Turn octal into hexadecimal, with the binary and decimal shown too. Accepts signs, fractional points and several numbers at once.
Base Converter
Convert a number between any two bases from 2 to 36, using digits 0-9 and letters A-Z.
Number Converter
Convert a number between binary, octal, decimal or hexadecimal, and any other base from 2 to 36.
Text to Binary Converter
Turn text into binary byte values with an ASCII, UTF-8 or UTF-16 encoding and a space, comma or no delimiter.
String to Binary Converter
Encode text into binary byte values, choosing the character encoding and how the bytes are separated.
Text String to Hex Code Converter
Turn a text string into hexadecimal byte values with ASCII, UTF-8 or UTF-16 and a space, comma or no delimiter.
Binary to Text Translator
Turn binary byte values into readable text using ASCII, UTF-8, or UTF-16.
Binary to String Converter
Turn binary byte values into readable text using ASCII, UTF-8 or UTF-16, with the bytes split by spaces or commas or run together.
Hex to String Converter
Decode hexadecimal byte values into text with an ASCII, UTF-8 or UTF-16 encoding select.
Decimal to Fraction Converter
Turn a decimal into an exact fraction by writing it over a power of ten and reducing with the greatest common divisor.
Fraction to Decimal Converter
Divide the numerator by the denominator to read a fraction as a decimal, with ≈ marking a rounded result.
Fraction to Percent Conversion
Convert a fraction to a percent by multiplying it by 100, with a short reference table.
Percent to Fraction Conversion
Turn a percent into a reduced fraction, with a mixed number shown for a value that is not a whole number above 100%.
Decimal to Percent Converter
Multiply a decimal by 100 to write it as a percent, from one number field, with an exact result.
Percent to Decimal Conversion
Divide a percent by 100 to get its decimal, with a small percent-to-decimal table for the common values.
Degrees, Minutes, Seconds to Decimal Degrees Conversion
Enter degrees, minutes and seconds and get the angle in decimal degrees, calculated in your browser.
Decimal Degrees to Degrees, Minutes, Seconds
Convert an angle from decimal degrees into degrees, minutes and seconds, entirely in your browser.
Degrees to Radians Converter
Convert degrees to radians in one field by multiplying the angle by pi and dividing by 180.
Radians to Degrees
Turn radians into degrees in your browser: multiply by 180, divide by pi, round to 15 significant digits.
Roman Numerals Converter
Convert a Roman numeral to a decimal number or a decimal number to a Roman numeral, in your browser, with one button press.
Date to Roman Numerals Converter
Enter a month, day and year and get the same date written in Roman numerals, in the order and separator you choose.
Scientific Notation Converter
Switch a number between decimal, scientific, E, and engineering notation, computed in your browser.
Binary Converter
Convert a binary number into decimal, hexadecimal, octal and ASCII text right in your browser.
Binary/Decimal/Hex/Octal Converter
Convert a value between binary, decimal, hex and octal with plain or signed formats, with results in copyable cards.
PPM Converter
Convert a proportion between decimal, percent, permille, ppm, ppb and ppt, worked out in your browser.
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