# Convert Hour to Second (hr to sec)

In next fields, kindly type your value in the text box under title [ From: ] to convert from hour to second (hr to sec). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].

**Definitions:**

**Hour** (abbreviations: **hr, or h**): is a unit of time, conventionally counted as 1/24 of a day. In the modern metric system, it is equivalent to 3,600 seconds.

**Second** (abbreviations: **sec, or s, or s (SI), or sec (US)**): is the base unit of time in the International System of Units (SI, Système International d'Unités). It is the second division of the hour by sixty, where the first division by sixty being the minute.

## How to Convert Hours to Seconds

*Example: How many seconds are equivalent to 4.74 hours?*

As;

1 hours = 3600 seconds

4.74 hours = Y seconds

Assuming Y is the answer, and by criss-cross principle;

Y equals 4.74 times 3600 over 1

(i.e.) Y = 4.74 * 3600 / 1 = 17064 seconds

Answer is: 17064 seconds are equivalent to 4.74 hours.

*Practice Question: Convert the following units into sec:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 13.95 hr

( ii ) 31.25 hr

( iii ) 14.45 hr

### Convert Hour to More Time Units