B73 Minimum rwy length for T.O

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Hey guys!
Just a question I faced recently;before TO, we look for the CSPD or use Strong-Pilot for TO Speeds depending on weight/temperature etc.

But how can we calculate the minimum rwy length we need for the specific conditions? Is there any simple way?
every company has its own SOP -including minimum rwy length for operation but if we would like to find out the minimum rwy we need for departure, what would be the formula?

Thanks in advance.