how many seconds are in 24 hours

There are 86,400 seconds in 24 hours. This is calculated as:
24 hours×60 minutes/hour×60 seconds/minute=86,400 seconds24\text{ hours}\times 60\text{ minutes/hour}\times 60\text{ seconds/minute}=86,400\text{ seconds}24 hours×60 minutes/hour×60 seconds/minute=86,400 seconds