How can I get a calculator for hours to be more easy to make a clocking ?

Here are other possibilities

http://www.miraclesalad.com/webtools/timesheet.php

Actually here is a list of them that you might like to look at

https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=time%20sheet%20calculator

Perhaps you can explain what you mean a little better :/

Thank you, I have to recalculate for the last one and half year my activity from work and are many working times that I have to correctly know ! For example I work 15 hours per day but 5 are driving, 2 are work, 2 are waiting and others break !  I have to do this hour by hour and is very complicated to do this with the pen and paper! Thank you 

You are welcome :)

I'll have a look and see if I can find something even better :)

What happened to my first possibility - it has disappeared :/

http://www.timeanddate.com/date/timeduration.html