Carbon 14 Dating Calculator
 presented by Earth Science Australia 
through the kind permission of the author Mark Gregory
http://www.chepd.mq.edu.au/boomerang/teaching.www/java/carbdate.htm#top
To find the percent of Carbon 14 remaining after a given number of years, type in the number of years and click on Calculate. 


Years C 14 halflife = 5730
Carbon 14 left = percent
To find the years that have elapsed from how much Carbon 14 remains, type in the C 14 percent and click on Calculate. 


Percent C 14 C 14 halflife = 5730
Years = +/- 
More about Carbon Dating

In the 1940's Dr. Willard F. Libby invented carbon dating for which he received the Nobel Prize in chemistry in 1960. 

Carbon dating has given archeologists a more accurate method by which they can determine the age of ancient artifacts. The halflife of carbon 14 is 5730 ± 30 years, and the method of dating lies in trying to determine how much carbon 14 (the radioactive isotope of carbon) is present in the artifact and comparing it to levels currently present in the atmosphere. 

Above is a graph that illustrates the relationship between how much Carbon 14 is left in a sample and how old it is.