ATR Calculator

ATR Calculator reads your attendance table and calculates how many ATR days you need each week — using the fewest days possible.

How it works:

1. Open your attendance portal and generate the monthly report
2. Click the extension icon
3. Hit Calculate ATR

Features:

• Week-by-week breakdown with required vs actual hours
• Donut chart showing percentage of hours logged
• ATR priority recommendations (minimum days to cover shortfall)
• Detects holidays, leaves, and weekends automatically
• Shows days where ATR is already applied
• Saves last report locally for quick access
• Collapsible weekly cards with day-by-day details

Privacy:

• No data collected or transmitted
• No backend, no server, no accounts
• Everything runs 100% locally in your browser

Note: Designed for a specific HRMS attendance table format. May not work with all portals.