Overview: Hours Ago Calculator is a lightweight, offline Firefox extension that helps you quickly calculate time differences in both directions:
Convert a number of hours into a past or future timestamp (e.g., “36 hours ago” → 2025-11-04 03:15:00). Convert a specific date/time into how many hours or days ago it occurred.
Perfect for time tracking, log analysis, scheduling, or simply satisfying your curiosity about “how long ago” something happened.
Features: Convert hours → timestamp and timestamp → hours ago instantly. Works entirely offline — no data ever leaves your browser. Copy results to clipboard with one click. Clean, responsive interface. No ads, no analytics, and no external connections.
Why it’s safe: The extension does not collect or transmit any personal data. All calculations happen locally on your device.
