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News:
2017.01.08
New calculla released ! Please go to calculla.com for the calculla v2. It's better, faster, more beautiful, redone for you in most modern technologies.
2015.08.25
Two cars related tables released today: Tire codes - speed ratings and Tire codes - load index
2015.07.30
2015.04.06
This time 3 new calculators for fractions: Fractions: adding and subtracting, Fractions: 4 operations and Fractions: inverse (reciprocal). Each of them shows all sub-steps needed to compute common denominators, create improper fraction (if needed), reduce the fraction etc.

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Sleep time
Calculator computes the number of years, months, days, hours, minutes and seconds, which you slept during your life.
Some facts
• The average adult sleeps from 6 to 8 hours. However, the need for sleep varies with age. Newborns can sleep even 16 hours a day, while for seniors older than 50 years old only 6 hours can be sufficient.
Below, there are summarized average need for sleep depending on age:
• Newborns - 16 hours,
• Babies 3-5 months old - 14 hours,
• Babies 6-23 months old - 13 hours,
• Children 2-3 years old - 12 godzin,
• Children 4-5 years old - 11 hours,
• Children 6-9 years old - 10 hours,
• Teens 10-13 years old - 10 hours,
• Teens 14-18 years old - 8 hours,
• Adults 19-30 years old - 7-8 hours,
• Adults 31-49 years old - 7 hours,
• Adults 50-70 years old - 6 hours.
• If you want to know what more we can read from your date of birth check out our other calculators:
What is the meaning of each calculator field ?
• Your date of birth - it is simply the date, when you were born. It is a base for all further calculactions.
• Now is - it is simply current time and date.
• How much do you sleep - it is average number of hours, which you sleep within one day. Most common value for adult man is less or more 8 hours.
• So far sleep - this fields shows how much time have you aproximately spent slepping in your whole life. In other words it is the sum of slept hours from your birth to today.

• Time you already lived - it is a total time from your birth to now calculated in years, months, days, hours, minutes and seconds. In other words it is your current age.
• Your zodiac sign - it is astrological zodiac sign assigned to your date of birth.
• Time to your birthday - it is number of monts, days, hours, minutes and seconds left to your next birthday. This field is computed basing on date of birth, which you put in the form.
 Your date of birth january (1)february (2)march (3)april (4)may (5)june (6)july (7)august (8)september (9)october (10)november (11)december (12)12345678910111213141516171819202122232425262728293031 012345678910111213141516171819202122230123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585901234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859 How much do you sleep hours per day