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or Base64. The same bytes always produce the same digest. A hash is one-way: it is not encryption and cannot be decrypted to recover the original input. SHA-256 is commonly used for integrity checks， UTF-16LE， trailing spaces， and Base64 can produce different byte sequences from similar-looking input. Hex and Base64 modes interpret the input as encoded bytes rather than hashing the visible characters themselves. Line endings， select the input encoding， the SHA-256 digest is ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad. Input encoding changes the hash SHA-256 operates on bytes， Calculate a SHA-256 hash online SHA-256 is a cryptographic hash function that maps input data to a fixed 256-bit digest. Enter text or encoded bytes，。

and output the result as lowercase Hex。

not on how characters look. UTF-8， confirm the exact bytes and encoding used on both sides. SHA-256 is specified by NIST in FIPS 180-4. SHA-256 and HMAC FAQIs SHA-256 secure for passwords? Do not store passwords with a single fast SHA-256 hash. Password storage should use a dedicated password-hashing or key-derivation scheme with salt and an appropriate work factor. What is HMAC-SHA-256? HMAC combines SHA-256 with a secret key to authenticate a message. A plain hash can detect a difference when compared with a trusted value， digital-signature systems， Unicode normalization， uppercase Hex。

Hex， and comparing data without storing the data itself. How to calculate SHA-256 Enter the source text or encoded byte sequence. Select the encoding that describes how the input should become bytes. Choose Hex or Base64 for the digest representation. Enable HMAC and enter a secret key only when keyed authentication is required. Calculate and compare the complete output with the expected digest. For UTF-8 text abc。

and letter case also change the digest. When matching another system。

but it does not prove who created the value. How do I hash a file instead of text? Use the SHA-256 File Checksum tool to process local files or URL content without first converting the file into text. ， content identifiers。