Add or Subtract Time

Enter time values and choose whether to add or subtract them.

Calculate Time Difference

Find the duration between two different times.

Convert Time Units

Convert between hours, minutes, seconds, and days.

Time Calculator Features

Add & Subtract

Easily add or subtract time values for calculating total durations or time adjustments.

Time Differences

Calculate precise time differences between start and end times for scheduling and tracking.

Unit Conversion

Convert seamlessly between hours, minutes, seconds, and days with accurate results.

Work Hours

Perfect for calculating work hours, overtime, and project time allocations.

Project Planning

Essential for project managers to calculate task durations and deadlines.

Mobile Friendly

Use our time calculator on any device - perfect for on-the-go calculations.

Common Time Calculation Examples

Work Shift: 9:00 AM to 5:30 PM = 8 hours 30 minutes
Meeting Duration: 1 hour 15 minutes + 45 minutes = 2 hours
Cooking Time: 2.5 hours = 150 minutes = 9,000 seconds
Exercise: 45 minutes × 5 days = 3 hours 45 minutes per week
Travel Time: 3 hours 20 minutes - 30 minutes break = 2 hours 50 minutes