# Mercury Retrograde Calculator

> Mercury retrograde calculator: find every Mercury retrograde start, end, and shadow period for any year, with exact dates. Free, runs in your browser.

- **Canonical URL:** https://boringtoolskit.com/mercury-retrograde-calculator/
- **Category:** Astrology
- **Evidence level:** catalogue
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

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