Calculate CRC-16/XMODEM from text and copy the hexadecimal result. XMODEM uses the 0x1021 polynomial with an initial value of 0x0000.
This profile does not reflect input or output bytes. That detail separates it from KERMIT even though both use the same polynomial and initial value.
Batch mode is useful when comparing a list of short protocol values. Each non-empty line is encoded as UTF-8 and checked independently.
It returns a 16-bit checksum, usually written as 4 hexadecimal characters.
Paste text into the input pane. Batch mode calculates one CRC-16/XMODEM value per line.
CRC-16/XMODEM uses polynomial 0x1021, initial value 0x0000, no reflection, and final XOR 0x0000.
Calculate CRC, Adler, Fletcher, BSD, and System V checksums for text input. Batch mode processes one value per line.
Calculate bitwise AND, OR, XOR, NOT, and shifts on fixed-width integers. Choose the word size, input base, and signed result display.
Generate placeholder text for layouts. Customize the paragraph count, line length, and copy the exact Lorem Ipsum needed.
Generate aHash, dHash, pHash, and wHash fingerprints for JPEG, PNG, and WebP images. Set hash size, copy values, and export results as a CSV.
Calculate the duration between two date-time values. Show the result in milliseconds, seconds, minutes, hours, days, weeks, average months, or average years.
Encode text to Base32 or decode it back to plain text. Process single strings or batch process multiple lines instantly.
Encode text to Base36 or decode it back to plain text. Process single strings or batch process multiple lines instantly.
Encode text to Base58 or decode it back to plain text. Process single strings or batch process multiple lines instantly.
Encode text to Base45 or decode it back to plain text. Process single strings or batch process multiple lines instantly.
Encode text to Base62 or decode it back to plain text. Process single strings or batch process multiple lines instantly.
Encode text to Base85 (Ascii85) or decode it back to plain text. Process single strings or batch process multiple lines.
Encode text to Base91 or decode it back to plain text. Process single strings or batch process multiple lines instantly.