# How do I convert numbers of the form "12,109,987" stored in strings

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Asma on 19 Jun 2022
I need to work on numbers of the form "12,109,987" which are stored in strings so taht I can perform mathematical operations on it.
If I use str2num("12,109,987", it just gives three different numbers present on either side of commas [12 109 987] as output and it is difficult to work with them.

Ibrahim Mohammed Wajid on 19 Jun 2022
Edited: Ibrahim Mohammed Wajid on 19 Jun 2022
you can use str2double function instead of str2num
str2double performs something similar to below operation if in case you need to implement yourself for different cases in future.
[~,len] = size(s)
p = ""
for i = 1:len
if s(i)~= ','
p = p + s(i);
end
end
p = str2num(p); % p contains number from string as per your requirement
Asma on 19 Jun 2022
Its working out.
Thanks for the detailed explanation.

Simon Chan on 19 Jun 2022
use function str2double instead of str2num

R2022a

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