Business Days & Workday Calc
ChatGPT pluginWorkdays, holidays, SLA & PTO
Count workdays, office days and PTO days between two dates, add business days for an SLA due date, or list bank holidays and school breaks. Ask "how many working days are there between 14 July and 18 August in Germany?", "what date is 37 business days after 11 August in England?", "is Monday a bank holiday in Bavaria?" or "what are the school holidays in Bavaria?".
Business Days and Workday Calculator does the date arithmetic exactly and reads each country's public holidays from Nager.Date, the UK's bank holidays from GOV.UK and school holidays from OpenHolidays, so the result does not depend on a guess about which days are holidays. People also call it OpenKrill Business Days. It does not count trading days, banking days, or settlement days.
It says how it counted. A working day is any day that is not a weekend day (Saturday and Sunday unless you set another weekend) and not a public holiday of the country or region. When you add days, the start date is day 0 and is not counted; when you count a range, both ends are counted unless you say otherwise. Bank holidays that are not days off, optional days and half days such as Christmas Eve count as working days.
Add a region (for example DE-BY, GB-SCT or US-CA) to include that region's holidays. Without one, holidays that only some regions keep are not counted, and the answer lists them so you can see the difference.
It covers more than 200 countries and territories for public holidays and a smaller set, mostly in Europe, for school holidays. It moves up to 1000 business days at a time and reads up to eight calendar years in one question. Company closures, local observances and legal deadline rules are not included, so check the official calendar and the contract before relying on a date.
It stores nothing about you: answers are cached for up to 24 hours, and the only lasting record is a daily count of calls per tool.
Business Days & Workday Calc is #12,589 of 13,927 ChatGPT plugins by placement.
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Rank in Business & operations
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How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.
Business & operations2,166th of 2,396 by placement
| # | Plugin | Position | 7d |
|---|---|---|---|
| 2164 | #12582 | 1,317places down | |
| 2165 | #12584 | 1,318places down | |
| 2166 | #12589 | — | |
| 2167 | #12590 | — | |
| 2168 | #12591 | 1,322places down |
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Example prompts
- “How many working days are there between 14 July and 18 August 2026 in Germany?”
- “What date is 37 business days after 11 August 2026 in England?”
- “List the public holidays in Bavaria in 2027”
- Categories
- Made by
- HIẾU VŨ TRUNG NGUYEN · Website
- Sign-in
- On Install
- Capabilities
- Counts workdays, office days and PTO days between two dates for a country or region, Adds or subtracts business days from a date, skipping weekends and public holidays, Lists bank holidays and statutory public holidays of a country and year, by region, Lists school holidays and school breaks where they are published, States how days were counted, including the weekend and which holidays were applied
- Availability
- Available
- Version
- 1.0.2
- Keywords
- workdays, office days, bank holiday, school holidays, PTO, SLA deadline, statutory holidays
- Created
- October 3, 2026
- More info
- Sponsorship
- Promote this plugin