OceanCalc

Time Calculator

Add or subtract time and convert between 12-hour and 24-hour formats.

Time Calculator

Start Time

Time to Add

Time Format Reference

12-Hour Format

  • Uses AM (midnight to noon)
  • Uses PM (noon to midnight)
  • Hours: 12, 1, 2, ... 11

24-Hour Format

  • No AM/PM designation
  • Hours: 00 to 23
  • Military time standard
Result
Adding time
12-Hour Format11:30:00 AM
24-Hour Format11:30:00
Total Seconds41,400