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Biometric Calculator

Raw punch logs → worked hours, instantly

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Biometric Calculator — live app screenshot

Overview

Biometric attendance devices export raw punch in/out logs. Turning those into hours worked is tedious, error-prone arithmetic. This tool does it the moment the data lands, and keeps working without a connection.

A fast, offline-capable tool that turns biometric punch in/out logs into worked time, break time, and remaining hours. Manual, bulk, and file-upload entry with live calculations and one-click CSV export.

  • React
  • TypeScript
  • Tailwind CSS
  • Offline / PWA

How it works

  1. 01

    Bring in the logs

    Type punches in manually, paste them in bulk, or upload the device's file.

  2. 02

    Calculate live

    Worked time, break time and remaining hours update as you enter data. No submit button.

  3. 03

    Take it with you

    Export the result as CSV in one click. It's an offline-first PWA, so it works without a network.