This might be a strange feeling to know that 1 billion seconds is a long time equivalent to more than 30 years. If you’re wondering how long is 1 billion seconds and start counting how long is 1 million seconds, quadrillion seconds, trillion seconds, you would definitely go crazy. Don’t worry, in this article, we’ll show you how to do it. So, let’s start and find out how long is 1 billion seconds in hours.

**1. How long is 1 Billion Seconds in Hours?**

1 billion seconds can be written as 1000000000 seconds or 10^{9 }seconds. So how long is 1 billion seconds in hours? Well, it can be calculated in hours as 1 second is equal to 0.000277 hours. Therefore, 1 billion seconds is equal to 0.000277 × 10^{9 }hours i.e., **277777.778 hours**. (See How long is 1 Million Hours?)

**2. How do you Calculate 1 Billion Seconds in Years?**

Specifically, one billion seconds is 31.68 years or a little less than 32 years.

- 1 billion seconds is equal to 1000000000 seconds which can be converted to minutes.
- 1 second is equal to 0.0166 minutes i.e., 0.000278 hours.
- Therefore, 1 billion seconds is equal to 0.000277 × 10
^{9 }hours which is equal to 277777.778 hours. - The number of days in a year is considered to be 365.2425 and not 365 because every four years leap year gives an extra day but not at the end of the century unless divisible by 400.
- So, 1 billion seconds is equal to 277777.778/24 days which is 11574.074 days which when divided by 365.2425 gives the
**number of years to be 31.68 in 1 billion seconds**. Therefore, 1 billion seconds is equal to 31 years 8 months 5 days. Also, check out how many minutes are there in a Year?

**3. How many Years is 1 Billion Seconds?**

Image from convertunits.com
To answer how long is 1 billion seconds, in terms of years it is 31.68 calendar years. You can follow the traditional approach or can do using the online calculator as depicted above. This way you can save time and do some more interesting sums. Must read how Calculator works?

**4. Is a Billion Seconds 32 Years?**

A billion seconds is somewhat less than 32 years or you can say 31.68 years. (See What is the Time Difference between Australia and USA?)

**5. Convert 1 Billion Seconds into Years and Months**

1 billion seconds is equal to 31.68 years as calculated above but how long is 1 billion seconds in months can be calculated?

- 1 year is equal to 365.2425 days so 0.68 years is equal to 365.2425 multiplied by 0.68 years i.e., 248.3649 days.
- To find months, we have to do division, 248.3649/30.5 i.e., 8.14 months approximately.
- So, 1 billion seconds is 31 years and 8 months long. (See How Do You Say 12:30 In Spanish?)

**6. How long is 1 Million Seconds?**

Photo by Anton Makarenko
1 million seconds is just over 11 and a half days. Let’s see how it works.

- 1 million seconds can be written as 10,00,000 seconds i.e., 10
^{6}seconds. - 1 second is 1/60 minutes so 10
^{6}seconds is 10^{6}/60 minutes which is equal to 16,666.667 minutes. - 1 minute is 1/60 hours so 16,666.667 minutes is 16,666.667 minutes/60 hours which is equal to 277.778 hours.
- 1 hour is 1/24 days so 277.778 hours is 277.778 hours/24 days which is equal to 11.574 days.
- Now 0.574 days can be converted to hours as 1 day has 24 hours so 0.574 days will have 0.574 days × 24 hours i.e.,13.778 hours.
- But, 1 hour has 60 minutes so 0.788 hours have 0.788 hours × 60 minutes i.e., 46.667 minutes.
- 1 minute contains 60 seconds so, 0.667 minutes will contain 0.667 minutes × 60 seconds i.e.,40 seconds.

Hence, we can conclude that 1 million seconds or 1,000,000 seconds is** 11 days, 13 hours, 46 minutes, and 40 seconds long.** (See How to Write 1 Million in Numbers?)

**7. How long is a Million Seconds compared to a Billion Seconds?**

Here, how long is 1 million seconds, quadrillion seconds, or trillion seconds can be compared by the concept of how long is 1 billion seconds which is approximately 31.68 years while 1 million seconds is approximately 11.574 days. Therefore, **1 billion seconds is much greater than 1 million seconds.**

- Comparison in terms of minutes: 1 billion minutes ago is approximately the year 114AD while 1 million minutes ago is approximately 2 years ago.
- Comparison in terms of hours: 1 billion hours ago is approximately the time when humans evolved i.e., 141k ya while 1 million hours ago is approximately the 20
^{th}century. - Comparison in terms of days: 1 billion days ago is 2.7 million years BC i.e., 141k ya while 1 million days ago is about 700BC. (See What is A.M. and P.M. in Time?)

**8. How many Years is 1 Trillion Seconds?**

- 1 trillion seconds is equal to 1,000,000,000,000 seconds which can be converted to minutes as 1 second is equal to 0.0166 minutes i.e., 0.000278 hours.
- Therefore, 1 trillion seconds is equal to 0.000277 × 10
^{12 }hours which is equal to 277777777.78 hours. - The number of days in a year is considered to be 365.2425 and not 365 because every four years leap year gives an extra day but not at the end of the century unless divisible by 400.
- So, 1 trillion seconds is equal to 277777777.78/24 days which is 11574074.07 days which when divided by 365.2425 gives the number of years to be 31688.74 in 1 trillion seconds.
- Therefore, 1 trillion seconds is equal to 31688.74 years. 1 year is equal to 12 months so 0.74 years is equal to 0.74 × 12 months i.e., 8.88 months, and 1 month is approximately equal to 30.5 days so 0.88 months is equal to 27 days.

Hence, for how long is trillion seconds in years we can conclude that 1 trillion seconds is **31688 years,8 months, and 27 days. **(See How Many Number of Days in a Month?)

**9. How many years is Quadrillion Seconds?**

Photo by Erik Mclean
How long is quadrillion seconds can be calculated just like we have found how long is 1 billion seconds.

- 1 quadrillion seconds, can be written as 10
^{15}seconds which can be converted to minutes as 1 second is equal to 0.0166 minutes i.e., 0.000278 hours. - Therefore, 1 quadrillion seconds, is equal to 0.000278 × 10
^{15 }hours which is equal to 278,000,000,000 hours. - The number of days in a year is considered to be 365.2425. So, 1 quadrillion seconds, is equal to 278,000,000,000/24 days which is 11,583,333,333.333 days which when divided by 365.2425 gives the number of years to be 31,714,089.498 in 1 quadrillion seconds.
- Therefore, 1 quadrillion seconds, is equal to
**31,714,089.498 years**. 1 year is equal to 12 months so 0.498 years is equal to 0.498 × 12 months i.e.,5.976 months, and 1 month is approximately equal to 30.5 days so 0.976 months is equal to 30 days.

Hence, for how long is quadrillion seconds in years we can conclude that 1 quadrillion seconds, is 31,714,089 years,5 months, and 30 days. Must read how long is a Decade and a Century?

**10. How big is a Nonillion?**

A nonillion is equal to 10^{30} on the short scale, or 10^{54} on the long scale. It is sometimes referred to as nontillion.

How big is a nonillion can be expressed in terms of decimal as,

- On short scale: 1,000,000,000,000,000,000,000,000,000,000 seconds.
- On large scale: 1, 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 seconds.

Examples can be written as:

- The mass of the sun can be expressed in nonillion as 1.989 nonillion kg.
- A layer of 15,000 km thick can be covered by 1 nonillion dollars. (Also read How Long does it Take to Drive 1 Mile?)