Rounding to next integer

I am trying to create a program to calculate a module size for solar panels. The answers can only be a whole integer value. I tried using round() to do this but in a case where the decimal value is below 0.5 it will round down. I would like it to round all values to the next whole integer. For instance if the calculation gives an answer of 2.1 I want output value to be 3.

Answer 1

[Steven Lord]

See the ceil function.

[Nicholas Salce]

Thanks