Use the beam calculator to determine the maximum deflection, the bending line and the bending stress of a (statically overdetermined) beam clamped on both sides. Profile properties can be determined either with the profile search engine or with the cross-section calculators.
About the calculation
The case at hand, "beams clamped on both sides under a central load", is a case that occurs frequently in practice. Determining the support reactions is still relatively easy here, as it is a symmetrical arrangement and the loads are evenly distributed.
The calculation is done based on the Bernoulli beam theory.
Regarding the units: the Young's modulus of steel is 210 GPa. The cross-section properties can be calculated with the cross-section calculators.