Simply order your publications by the number of citations with your best cited article first. The last listing number of a publication where the number of citations is higher or is equal to this listing number, defines your h-index.
1. Article A, 30 citations
2. Article B, 5 citations
3. Article C, 2 citations
In this case the h-index is 2, no matter how many articles may follow next.
H-Index is simply the Number at least which each of your paper has been cited. For example:
1. Paper 1 - Cited 100
2. Paper 2 - Cited 50
3. Paper 3 - Cited 10
4. Paper 4 - Cited 5
5. Paper 5 - Cited 2
6. Paper 6 - Cited 1
here your h-index is 2, because talents 2 of the papers have been cited 2 or more times. So now to increase your h-index to 3 or 5, you need to make sure your 3 or 5 papers have been cited 3 or 5 times each.
In this example the h-index is 4 because Paper 4 was cited five times or in other words, it is the last paper in the list that was cited more often than its listing number.
I cannot believe some above ways for H-index estimation, because for example I have three cited papers as follows: 6, 4, 1, (Total citations are 11) But my estimated H-index is equal to 2. Thus, how it is 2 when the last cited paper was 1?
That is correct, same calculation as above. Calculation of your H-index:
1. Paper A, 6 citations
2. Paper B, 4 citations
3. Paper C, 1 citation
Remember: if the listing number is higher than the number of citations then it can not be taken into account regarding your H-index. In this case, Paper B is the last paper where the number of citations is higher or equal to the listing number and therefore your H-index is 2.
Dear Andreas, thanks a lot for correction, I agree also that the h-index in my above example should be 4, as atleast 4 papers have 4 citations and more.
You might have 100 articles but only 10 of them were cited 10 times (or more), then your h-index equals 10. Your h index equals N if N of your articles have been cited at least N times or more. Nowadays, what is more important is the Field-Weighted Citation Impact (or FWCI). It is the ratio of total citations actually received to the total citations that would be expected based on the average of the subject field. In short if your FWCI is 1, your are OK (within the average or doing as good as the rest of us). FWCI > 1 : good for you, you are doing better than average. FWCI