To measure the diameter of your table simply measure through the centre from end to end. Once you have this figure you then need to choose your desired overhang. The general rule is to allow for 40-50cm (16”-20”) overhang but this can be down to personal preference. Add both these figures together and you have the diameter you require.
Firstly measure the width of your table from edge to edge. Allow 40-50cm (16’ to 20”) overhang (20-25cm each side), you can have longer but this is down to preference and also the maximum width of the tablecloth (approx 135cm”).
To measure the length just repeat the process as you did for measuring the width. Again allow for a 40-50cm overhang (20-25cm each side).