Git Conventional Commit & URL Converter
About Git Commit Hash Generator
The Git Commit Object SHA-1 / SHA-256 Hash Generator constructs authentic Git commit object payloads (`commit <size>\0tree...author...committer...message`) and calculates exact 40-character SHA-1 and 64-character SHA-256 commit hashes.
How to Use Git Commit Hash Generator
Step 1
Enter tree hash, parent commit hash (optional), author info, and commit message.
Step 2
Review the assembled raw Git commit object text.
Step 3
Inspect the generated SHA-1 and SHA-256 commit hashes.
Step 4
Click "Copy Hash".
Practical Use Cases for Git Commit Hash Generator
Understanding Git Internal Object Hashing
Learn how Git constructs commit object headers and computes immutable SHA-1 hashes from tree hashes, parent commits, timestamps, and commit messages.
Forensic Commit Verification & Vanity Hash Mining
Simulate commit hashing with varying commit dates and committer timestamps to audit Git history integrity.
Input & Output Examples
Calculating SHA-1 for Git Commit Object
Tree: `4b825dc642cb6eb9a060e54bf8d69288fbee4904`, Message: "Initial commit", Author: "Alice <alice@test.com> 1700000000 +0000"
Raw Git Object: `commit 178\0tree 4b82...` | SHA-1 Commit Hash: `94e5e7834220b333...`
Key Features & Performance
- ✓Constructs canonical Git commit object payload with null-byte delimiter (`commit <bytes>\0`).
- ✓Calculates both standard SHA-1 (40 hex chars) and modern Git SHA-256 hashes.
- ✓Configurable Author, Committer, Commit Timestamps, Parent Commits, and GPG Signature fields.
- ✓100% Client-Side Web Crypto API execution.
- ✓1-Click Copy commit hash.
Key Terminology & Definitions
Git Commit Object
An immutable Git object storing a pointer to a root tree object, parent commit SHAs, author/committer metadata, and the commit message.
Git Object Header (`type size\0`)
The standard prefix prepended to all Git objects before computing their cryptographic hash.