Just the job my man, thanks on the last one, I dodnt get what you meant about changing the heading, sorry.

Second question for you - I have two columns, the first one is a measurement in inches, the second one has the formula =G3*25.4 which then converts the measurement into millimetres. What formula would I put in the cells if I wanted to either enter an amount in the inches column which is then converted to millimetres in the next column or alternatively I sometimes may want to enter the measurement in millimetres in the appropriate column and the inches column then be calculated into inches.