Table linen is worse than bedding for this, because there is no standard table. The listed cloths cover the common rectangles, squares and one round — anything else is cut to your table, in Cloud Cotton or French linen, with napkins and runners to match.
The maths is simple enough to do yourself before you write to us: table width + (2 × drop), table length + (2 × drop). A round table is diameter + (2 × drop).
Drop is the overhang, and it is yours to choose on a custom cloth. Our own: Cloud Cotton cloths are cut to a 15 cm drop, linen cloths to 45 cm — which is why a linen cloth is the table plus 90 cm in both directions and a Cloud Cotton one is the table plus 30. Floor length is around 74–76 cm on a standard dining table.