Downloadable versions of this activity are available in the following formats:
How old are you?
- 15,000 days?
- 80,000 hours?
- 150 million seconds?
Write your age in years: 
Guess your age in each different unit of time listed below, then work out the answer. You may need a calculator to help you.
| Remember: 1 year = 12 months 1 year = 365 days 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds |
| How old you are in .? | Your guess | Your calculation |
| months | ||
| days | ||
| hours | ||
| minutes | ||
| seconds |
Try finding out other people’s ages in different units—your Dad, Grandma, dog, goldfish, for example.
- How old is your oldest living relative?
- How old is your youngest living relative?
- What year were they born in?
Reproduced with permission from CensusAtSchool – U.K.
