Git Commit Hash Generator
Calculate exact SHA-1 hashes and understand how Git builds commit objects.
Commit Details
Results
Generated SHA-1 Hash
Raw Commit Object String
This is the exact string Git hashes. Notice the commit [size]\0 prefix.
...
Generate Real Git Commit Hashes
Fill in the tree hash, parent, author, committer, timestamp, and message — this free tool constructs the exact commit object Git would build and computes its SHA-1 hash, just like git hash-object.
Hashing uses your browser's Web Crypto API, so the computation happens locally and instantly. The raw commit object is shown too, so you can verify the format.
Authentic commit objects
The tool builds the real 'commit
Instant SHA-1
Web Crypto computes the SHA-1 digest locally in milliseconds, with the raw object displayed for inspection.
Private by design
Everything — object construction and hashing — runs in your browser. Your commit details are never uploaded.
How to use
- Enter the tree hash, parent hash, author and committer details.
- Set the timestamp (or use Now) and type the commit message.
- Click Generate to compute the SHA-1 hash.
- Copy the hash or inspect the raw commit object.
Frequently Asked Questions
How does Git compute a commit hash?
Git builds a commit object (header 'commit
What is the tree hash?
The SHA-1 of the tree object representing the repository's file snapshot for the commit — you can get it with 'git write-tree'.
Is the generated hash valid in real Git?
Yes — if the inputs match a real commit's contents byte-for-byte, the hash matches what Git produces.
Is my commit data uploaded anywhere?
No. Object construction and SHA-1 hashing run entirely in your browser via Web Crypto.
Is the tool free?
Yes, free with no signup.
Related Developer Tools
Check Out Other Popular Tools
Dew Point Calculator
Calculate the dew point temperature from air temperature and relative humidity. Accurately measure atmospheric moisture and comfort levels.
YouTube Subscriber Counter
Track live YouTube subscriber counts with real-time updates. Watch your favorite creators grow and compare channel statistics.
Email Permutator
Find anyone's email address by generating common email permutations based on their name and domain. Useful for sales and outreach.
Was this tool helpful?
Comments
Loading comments...