Have you ever wondered if you can total a filtered list as and when you change the filter criteria...! Yes indeed... try the " subtotal " function. The "subtotal" function offers a unique system where in you can calculate average, sum, count, max, min, standard deviation and variance. All these calculations can be performed by just changing the syntax of the "subtotal" function. The generic syntax of the "subtotal" function is =subtotal(function_number, cell reference). Here "function_num" refers to the operation you wish to perfom. The list of numbers are: Average - 1 Count - 2 CountA - 3 Max - 4 Min - 5 Product - 6 STDev - 7 STDevP - 8 (standard deviation for a population) Sum - 9 Variance - 10 VarianceP - 11 for example: if you wish to sum a given range (say B1:B25) then your formula will be =subtotal(9,B1:B25) To apply this on a list where you wish