Working Hours Calculator

Purpose-built for time accounting, the tool computes total working hours between a start and end timestamp using a configurable work schedule. It supports timezone-aware input, DST changes, and region-specific calendars to ensure accurate day boundaries. Users can choose whether weekends count as workdays and supply a holidays list to exclude non-working days. The core calculation overlaps each calendar day with the daily work window, subtracts fixed daily breaks, and aggregates the result across the date range. Outputs typically include total_hours, regular_hours, overtime_hours, and optional per-day breakdowns for auditing. This is valuable for project planning, client invoicing, payroll reconciliation, and workforce planning, especially in distributed teams. Unique value lies in integrating calendar-aware logic with simple inputs and providing clear breakdowns that align with common labor rules (e.g., first 8 hours per day are regular; overtime beyond that can be policy-driven). Use cases include cross-border projects, shift-based staffing, and cost forecasting tied to actual worked time.