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Time Duration Calculator - RTO/RPO Planning Tool
Calculate time durations between dates, add or subtract time, and convert between time units. Essential for disaster recovery planning to determine acceptable downtime windows and recovery time objectives (RTO).
Example: Calculate Downtime Window
Start:
2025-01-04 02:00 AM (maintenance start)End:
2025-01-04 06:30 AM (maintenance end)Duration:
4h 30m (270 minutes / 16,200 seconds)Calculation Modes:
- • Calculate duration between two dates
- • Add time to a date
- • Subtract time from a date
- • Convert between time units
- • Business days calculation
Use Cases:
- • RTO/RPO planning
- • Maintenance window calculation
- • SLA downtime tracking
- • Project duration estimation
- • Backup schedule planning
Quick presets for common recovery time windows from 15 minutes to 30 days.
Frequently Asked Questions
Common questions about the Time Duration Calculator
Select "Calculate Duration" mode, enter your start date/time and end date/time, and the calculator instantly shows the duration in days, hours, minutes, and seconds. It also shows business days (excluding weekends) for project planning.
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ℹ️ Disclaimer
This tool is provided for informational and educational purposes only. All processing happens entirely in your browser - no data is sent to or stored on our servers. While we strive for accuracy, we make no warranties about the completeness or reliability of results. Use at your own discretion.