Time Calculator

The Time Calculator helps you perform various time calculations including finding the duration between two times, adding time periods together, or subtracting time. Perfect for calculating work hours, project time tracking, or any time-based calculations.

Use Cases

• Work Hours: Calculate total hours worked between clock-in and clock-out times
• Project Tracking: Track time spent on tasks and projects
• Time Management: Plan schedules and time allocations
• Payroll: Calculate billable hours and overtime
• Travel Time: Determine travel duration and arrival times
• Event Planning: Calculate event duration and scheduling
• Cooking & Baking: Add up preparation and cooking times
• Exercise: Track workout duration and rest periods

How to Use

Time Conversions

Common Time Calculations

• Standard Work Day: 8 hours (9 AM to 5 PM with 1-hour lunch)
• Full-Time Week: 40 hours (5 days × 8 hours)
• Overtime: Hours worked beyond 40 per week (or 8 per day)
• Break Time: Usually 15 minutes per 4 hours worked
• Lunch Break: Typically 30 minutes to 1 hour (often unpaid)
• Time Zone Difference: Calculate meeting times across zones

Tips for Accurate Calculations

• Use 24-Hour Format: Or carefully select AM/PM to avoid confusion
• Include Breaks: Subtract break time from total work hours
• Round Appropriately: Some employers round to nearest 15 minutes
• Account for Daylight Saving: Spring forward, fall back affects calculations
• Double-Check Input: Verify all times before calculating
• Consider Time Zones: For international calculations, convert to same zone first

Decimal Hours Explanation

Many payroll systems use decimal hours instead of hours:minutes format: