MIT vs Unlicense: what is the difference?

Short answer: MIT: commercial use, modification, redistribution: Yes. Unlicense: the same uses: Yes.

MIT: Deal in the software without restriction, including to use, copy, modify, merge, publish, distribute, sublicense and sell it, as long as the copyright and permission notice go with all copies or substantial portions. Unlicense: Dedicates the software to the public domain; anyone may use it for any purpose without conditions.

MIT: commercial use, modification, redistribution: Yes

License: MIT License (MIT, curated)

• Every use you described is granted by MIT, and nothing you described is prohibited.

Duties: attribution, license_notice

Unlicense: the same uses: Yes

License: The Unlicense (Unlicense, curated)

• Every use you described is granted by Unlicense, and nothing you described is prohibited.

Duties and notes compared

• MIT: duties attribution, license_notice. Provided as is, without warranty.
• Unlicense: duties none. Provided as is, without warranty.

Combined in one work: compatible.

Context

• The duties differ: compare the duties and notes listed for each license below.

Sources

• MIT License: official text
• MIT on the SPDX License List
• The Unlicense: official text
• Unlicense on the SPDX License List

Check it yourself (free, no key)

{
  "tool": "check_license",
  "arguments": {
    "license": "MIT",
    "intended_use": {
      "commercial_use": true,
      "modification": true,
      "redistribution": true
    }
  }
}

Computed from Rightshold's license profiles; not legal advice. Updated 2026-10-19. JSON · Markdown