Conversion Factor: 1 Hour = 3600 Seconds | 1 Second = 0.000277778 Hours

Seconds to Hours Converter

Accurately convert between seconds and hours for scheduling, scientific calculations, and everyday time management. Default precision: 2 decimal places.

Currently converting: Seconds → Hours
sec

Enter any non-negative number (e.g., 3600, 1500, 900.5)

hr

Precision: 2 Decimal Places | Formula: hr = sec ÷ 3600

Common Conversion Table

Seconds (sec) Equals Hours (hr)
60 sec = 0.0167 hr
300 sec = 0.0833 hr
600 sec = 0.1667 hr
1,200 sec = 0.3333 hr
1,800 sec = 0.5 hr
3,600 sec = 1 hr
7,200 sec = 2 hr
10,800 sec = 3 hr
18,000 sec = 5 hr
36,000 sec = 10 hr
86,400 sec = 24 hr (1 day)
604,800 sec = 168 hr (1 week)

Hours to Seconds Conversion Table

Hours (hr) Equals Seconds (sec)
0.01 hr = 36 sec
0.05 hr = 180 sec
0.1 hr = 360 sec
0.25 hr = 900 sec
0.5 hr = 1,800 sec
1 hr = 3,600 sec
24 hr = 86,400 sec

Quick Conversion Shortcuts

Seconds → Hours

About Seconds and Hours

Conversion Formulas

Seconds to Hours

hr = sec ÷ 3600

Example: 7200 sec ÷ 3600 = 2 hr

Hours to Seconds

sec = hr × 3600

Example: 2.5 hr × 3600 = 9000 sec

Unit Definitions

Second (sec)

A second is the base unit of time in the International System of Units (SI). It is defined as the duration of 9,192,631,770 periods of radiation from a specific cesium-133 atom transition. Seconds are used for measuring short durations in science, sports, cooking, and everyday life.

Hour (hr)

An hour is a unit of time equal to 60 minutes or 3600 seconds. It is commonly used for measuring longer durations in scheduling, work shifts, travel times, and general time management. The concept of hours dates back to ancient civilizations.

Practical Examples

Workout Duration

A workout lasts 4500 seconds. How long is this in hours?

hr = 4500 sec ÷ 3600

hr = 1.25

Result: 4500 seconds equals 1.25 hours (1 hour and 15 minutes)

Project Timeline

A project takes 3.75 hours to complete. How many seconds is this?

sec = 3.75 hr × 3600

sec = 13500

Result: 3.75 hours equals 13,500 seconds

Frequently Asked Questions

There are 3600 seconds in one hour. This is calculated by multiplying the number of seconds in a minute (60) by the number of minutes in an hour (60): 60 seconds × 60 minutes = 3600 seconds.

To convert seconds to hours and minutes:

  1. Divide the total seconds by 3600 to get hours (integer part)
  2. Take the remainder from step 1 and divide by 60 to get minutes
  3. The final remainder is the remaining seconds

Example: Convert 5460 seconds

5460 ÷ 3600 = 1 hour with remainder 1860 seconds

1860 ÷ 60 = 31 minutes with 0 seconds remaining

Result: 1 hour and 31 minutes

One hour equals 3600 seconds. This conversion is constant and comes from the definition of an hour as 60 minutes, with each minute containing 60 seconds (60 × 60 = 3600).

To find how many hours are in 10,000 seconds:

hours = seconds ÷ 3600

hours = 10,000 ÷ 3600

hours = 2.777...

Therefore, 10,000 seconds equals approximately 2.78 hours (or 2 hours, 46 minutes, and 40 seconds).

This converter uses the exact conversion factor of 3600 seconds per hour, making it suitable for most scientific applications. For high-precision work, you can:

  • Select up to 5 decimal places using the precision controls
  • Use the calculation breakdown to verify the math
  • For astronomical calculations, note that a "solar hour" can vary slightly, but this is typically beyond everyday needs

To convert seconds to days, first convert seconds to hours using this tool, then divide the result by 24 (since there are 24 hours in a day).

Formula:

days = seconds ÷ 3600 ÷ 24

or days = seconds ÷ 86400

Example: 172800 seconds ÷ 86400 = 2 days

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