Convert ASCII characters into binary numbers.

Convert binary numbers back into ASCII characters.

Convert ASCII characters into octal values.

Convert octal values back into ASCII characters.

Convert ASCII characters into decimal code values.

Convert decimal code values back into ASCII characters.

Convert ASCII characters into hexadecimal values.

Convert hexadecimal values back into ASCII characters.

Convert ASCII characters into numbers of any base up to 36.

Convert numbers of any base back into ASCII characters.

Convert an ASCII string into raw byte values.

Convert raw byte values back into an ASCII string.

Draw a 7-bit or extended 8-bit ASCII reference table.

Look up a character by code or a code by character.

Show decimal, hex, octal, binary, and name for each character.

Reveal control characters and label them with their names.

Keep only printable ASCII characters and drop the rest.

Mark every character that falls outside the ASCII range.

Check whether a string contains only ASCII characters.

Transliterate accented characters down to plain ASCII.

Turn text into a FIGlet ASCII art banner.

Render text across multiple ASCII banner fonts.

Draw a box around your text.

Wrap text in a decorative ASCII frame.

Render rows of data as an ASCII grid table.

Generate divider and separator lines.

Turn a percentage into an ASCII progress bar.

Render numbers as horizontal ASCII bars.

Convert text into large block-style ASCII letters.

Underline or strike text using ASCII characters.

Add letter spacing using a chosen fill character.

Generate framed scrolling-banner snapshots of text.

Convert ASCII text into HTML escape codes.

Convert HTML entities back into ASCII text.

Percent-encode ASCII text for use in URLs.

Decode percent-encoded text back into ASCII.

Reconstruct Unicode symbols from ASCII codes.

Convert Unicode text down to ASCII bytes.

Encode ASCII text into Morse code.

Decode Morse code back into ASCII text.

Encode and decode Base32 (RFC 4648, base32hex, Crockford, z-base-32).

Produce a canonical hex+ASCII dump, plain hex, or reverse a dump back to text.

Encode and decode Base58 (Bitcoin, Flickr, Ripple) with Base58Check support.

Generate a random string of ASCII characters.

Dump all ASCII characters within a chosen range.

Build a string from a list of ASCII code numbers.

Apply a Caesar shift within the ASCII range.

Rotate the bits of each ASCII byte.

XOR ASCII text with a repeating key.

Encode and decode with a keyed Polybius square, with an ASCII grid diagram.

Encode and decode tap (knock) code with a rhythm timeline.

Encrypt and decrypt with the Bifid cipher, with a square diagram and fractionation trace.

Count characters grouped by ASCII category.

Show the ratio of ASCII to non-ASCII characters.

Calculate the byte size of ASCII text.

List the position of every non-ASCII character.

Count characters, bytes, and n-grams with entropy, a histogram, and a crypto fingerprint.

Convert an uploaded image into ASCII art.

Render CSV data as a grid, rounded, or markdown ASCII table.

Turn a list of paths into an ASCII directory tree.

Render numbers as a compact sparkline.

Draw a month as an ASCII calendar grid.

Auto-align and repair broken box-drawing diagrams.

Remove control characters and report what was found and where.

Replace Unicode lookalikes with their nearest ASCII equivalent.

Trim blank borders and center an ASCII art block.

Render text as pseudo-3D extruded ASCII letters.

Wrap each character in a keycap-style box.

Wrap characters in bubble-style brackets.

Generate a column ruler for alignment.

Turn label and value lines into a labeled bar chart.

Tune a custom shading ramp for ASCII art.

Render a series of numbers as an ASCII waveform.

Export ASCII art as scalable SVG markup.

Overlay two ASCII art blocks and highlight changed cells.

Flip ASCII art horizontally or vertically with proper box characters.

Rotate an ASCII art block by 90 or 180 degrees.