SHA-256 hash generator for text input. Paste a string, review its hexadecimal digest, and copy the result for a test or comparison.
The SHA-256 Hash Generator computes a digest from text you type or paste. Use it to compare known test strings, check an API payload, or inspect how a text change affects its fingerprint. Keep sensitive credentials out of test input.
SHA-256 is part of the SHA-2 family of cryptographic hash functions. It produces a 256-bit digest, represented here as 64 lowercase hexadecimal characters. The same input bytes produce the same digest. Changes to the input can produce a very different result.
The generator uses window.crypto.subtle.digest('SHA-256', ...) and encodes the input as UTF-8 with TextEncoder. Matching the visible text is not enough when encodings, line endings, or trailing spaces differ.
A .sha256 companion file may hold a checksum for a downloaded file, and sha256sum --check can verify an appropriately formatted checksum file. This text-input tool is not a substitute for hashing the original binary file.
For a download, use a file-aware tool such as sha256sum on the file itself. A package-lock.json integrity field also needs its stated algorithm and encoding; do not assume it is a plain hexadecimal SHA-256 digest.
The output length is 256 bits = 32 bytes = 64 hex characters. The SHA-256 digest of the empty string is e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855. If that value appears unexpectedly, check whether the input is empty.
A hash is not encryption, and there is no general "decode" operation. A digest alone does not authenticate the source of a message or download. Compare against a trusted reference, not just another value from the same untrusted source.
Label the algorithm and the input being hashed. The example SHA-256: abc123... filename.tar.gz includes a file name; SHA-256: abc123... identifies the algorithm more clearly than checksum: abc123.... These abbreviated examples are labels, not complete digests.
For very large files, use a streaming file tool such as sha256sum. This page accepts text, and browser memory can limit the input it can handle.
Do not use bare SHA-256 to store passwords. Use a password-hashing scheme such as bcrypt, scrypt, or Argon2id with an appropriate configuration. Those schemes have different properties; they are not interchangeable with a fast text hash.
For an HMAC-SHA-256 signature, use an HMAC implementation with its secret key. Hashing a message or concatenating a key with it is not the same operation. This generator does not perform that signing step.
The hashing API is window.crypto.subtle. Its use does not establish a certification for this page or a guarantee about all network activity. If hashing fails, check the browser error and Web Crypto support.
Use non-sensitive samples for testing. Follow your organization's requirements before pasting credentials, internal payloads, or confidential file contents into any web tool.
How to Use SHA-256 Hash Generator - Hash Text Online
Type or paste the string into Input Text. Include the exact spaces and line breaks you intend to hash.
Read the SHA-256 Hash output. If an error appears, check browser support and try again.
Copy the hexadecimal digest and compare the entire value with the expected hash. Check the input encoding and whitespace if it differs.
SHA-256 hash generator for text input. Paste a string, review its hexadecimal digest, and copy the result for a test or comparison.
Tool Use:
110Added:
Apr 30, 2026Type:
Free ToolPrivacy:
Client SideByte array to string converter for decimal UTF-8 bytes. Paste comma-separated or whitespace-separated values and review the decoded text.