Independent, unofficial app developed by James Jenrette / 1102tools using public GSA per diem data. It is not affiliated with or endorsed by GSA or the U.S. government.
Look up CONUS lodging and meals-and-incidental-expenses rates by city, ZIP code, or state; see seasonal lodging and M&IE breakdowns; and estimate or compare travel per diem. Seven read-only tools provide source-backed rates and calculations. No user sign-in or API key is needed. Estimates exclude airfare and ground transportation. Verify the fiscal year, month, and work locality before using a rate.
How to use
- 1Add it in ChatGPT
Open GSA Per Diem by 1102tools in ChatGPT's Plugin directory (button above), select + to add it and sign in if asked.
- 2Use it in a chat
Type @ in the composer and pick GSA Per Diem by 1102tools, or start your message with its name. ChatGPT may also suggest it when it fits what you ask.
Things to ask
- “What is the federal per diem for Arlington, Virginia in November?”
- “Estimate per diem for a 3-night trip to Chester, Massachusetts in March.”
- “Compare per diem for Denver, Austin, and San Diego for FY2027.”