Converters & Encoders
164 free converters & encoders tools in the Developer Tools collection — every one runs in your browser with no signup and no uploads. Page 2 of 2.
Sign-Magnitude Converter
Encode signed integers as a sign bit plus a plain magnitude in binary.
snake_case Converter
Convert camel, space, or kebab text to lowercase_snake_case
Soundex Encoder
Encode names to their 4-char Soundex phonetic code
Tab ↔ Space Converter
Expand tabs to spaces or compress spaces to tabs at a chosen width
TCF Consent String (IAB) Decoder
Decode any IAB TCF v2.x base64 consent string into human-readable purpose consents
Tel URI Encoder
Format phone numbers as RFC 3966 tel: URI strings
Balanced Ternary Converter
Convert integers to and from balanced ternary using digits T (−1), 0 and 1.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates in any timezone.
Timezone Abbreviation Decoder
Look up which timezones use an abbreviation like CST or IST
Timezone Offset Converter
Convert date-times between any two timezone offsets
TLS Certificate Decoder
Paste a PEM certificate and decode every X.509 field in your browser.
TLS Cipher Suite Decoder
Paste a cipher suite name or IANA code and get security rating and deprecation status
TTF to WOFF2 Converter
Compress a TTF or OTF font for the web — smaller files, no upload.
Two's Complement Converter
Compute the two's-complement binary of a signed integer at any bit width.
Unicode Code Point Inspector
Show code point, category, block, and UTF-8 bytes per character
Homoglyph Steganography Encoder
Hide bits by swapping Latin letters for Cyrillic lookalikes
Current Unix Timestamp
See the current Unix timestamp in seconds, ms, µs, and ns
Unix Timestamp (Microseconds) Converter
Convert Unix epoch microseconds to/from human-readable date-time
Unix Timestamp (Milliseconds) Converter
Convert Unix epoch milliseconds to/from human-readable date-time
Unix Timestamp (Nanoseconds) Converter
Convert Unix epoch nanoseconds to/from human-readable date-time
Unix Timestamp (Seconds) Converter
Convert Unix epoch seconds to/from human-readable date-time
UPC-E to UPC-A Expander
Expand a 6-digit UPC-E suppressed barcode to 12-digit UPC-A
UTF-16 to UTF-8 Converter
Transcode text or byte sequences from UTF-16 to UTF-8
UTF-8 to Unicode Code Points
Explode any UTF-8 text into its Unicode code point values
UUencode Encoder/Decoder
Encode and decode files with classic UNIX uuencode format
UUEncode / UUDecode
Classic Unix-to-Unix email attachment encoding, in your browser
vCard to LDIF Converter
Convert VCF contacts to LDIF format for LDAP and Active Directory import
Whitespace Steganography Encoder
Hide a secret message in space/tab patterns in blank lines
Windows FILETIME Converter
Convert Windows FILETIME 64-bit values to readable dates
WOFF2 to TTF Converter
Decompress a WOFF2 web font back to a usable TrueType/OpenType file.
XXEncode / XXDecode
UUEncode variant using only alphanumerics, plus and minus
yEnc Encoder/Decoder
Usenet binary encoding roughly twice as efficient as UUEncode
Z85 Encoder/Decoder
ZeroMQ's printable Base85 variant safe in code strings
ZigZag Integer Encoder
Encode signed integers via protobuf ZigZag encoding
SVG to Data URI Converter
Turn SVG markup into an optimized CSS data URI or Base64 string.
URL Decoder
Decode percent-encoded text and URLs back to readable form.
Case Converter
Convert text between camelCase, snake_case, PascalCase, kebab-case and more.
Unix Timestamp Converter
Convert Unix epoch timestamps to dates and back — UTC, local, ISO and relative.
Binary to Decimal Converter
Turn any binary number into its base-10 value instantly.
Decimal to Binary Converter
Convert any whole number to binary, grouped for readability.
Decimal to Octal Converter
Convert any whole number to octal (base 8) instantly.
Roman Numeral Converter
Convert numbers to Roman numerals and back, both directions.
Timestamp to Relative Time Converter
Turn a Unix timestamp into "3 hours ago" or "in 2 days".
Milliseconds to Time Converter
Break milliseconds into days, hours, minutes, seconds.
Epoch Milliseconds Converter
Convert between epoch milliseconds and human dates.
PX to EM Converter
Convert pixels to em relative to a parent font size.
IP to Binary Converter
Convert an IPv4 address to binary, hex and decimal.
CIDR to IP Range
Expand a CIDR block to its network, broadcast and host range.
Subnet Mask Converter
Convert between CIDR prefix and dotted-decimal subnet mask.
Base-N Number Converter
Convert a number between any bases from 2 to 36.
Markdown to Jira
Convert Markdown into Jira wiki markup for tickets and comments.
Jira to Markdown
Convert Jira wiki markup back into clean Markdown.
Kebab Case to Camel Case Converter
Turn 'kebab-case' identifiers into 'camelCase' instantly.
Snake Case to Camel Case Converter
Turn 'snake_case' identifiers into 'camelCase' instantly.
Camel Case to Snake Case Converter
Turn 'camelCase' identifiers into 'snake_case' instantly.
Constant Case Converter
Turn any text into 'CONSTANT_CASE' for env vars and constants.
Dot Case Converter
Turn any text into 'dot.case' for keys and namespaces.
cURL to Code Converter
Paste a curl command, get ready-to-run fetch, axios, Python or PHP code.
Crontab to Human
Paste a cron expression and get a plain-English schedule plus the next run times.
Batch Timestamp Converter
Convert a whole list of Unix timestamps and dates at once — timezone-aware, copy and export.
Number Base Converter
Convert between binary, octal, decimal, hex and any base from 2 to 36.
Markdown to PDF Converter
Write Markdown, preview live, export a styled PDF — all in your browser.
REM to PX Converter
Convert rem to pixels instantly — single values, batch lists, and full spacing-scale previews.
PX to REM Converter
Convert pixel values to rem — single, bulk, reference table, and reverse lookup.