# Difference between precision and rounding in Empower

Hello, I would like to know what is the difference, when using Empower, between precision and rounding? I am testing a custom field which averages the area of my main peak over 6 injections. Thing is, when I compare the calculator results with the custom field its not exactly matching. Its only a small difference, eg I get 109887.176 on the calc but 109887.178 on Empower. I have my custom field set to a precision of 3. Am I getting different results because the stored results are different to that of with a precision of 3.

I don't understand why they would be different, is rounding and precision different on Empower?

I don't understand why they would be different, is rounding and precision different on Empower?

1

## Comments

Comapring results between Empower and Excel is always somewhat of a slippery slope.

I would recommend calculating your result in Empower with much greater of a precision than theee. I typically use a precision of 6-10 depending upon the complexity of the calculation (where precision increases as the difficulty of the calculation increases).

At the end of the day you need to be aware that you are always going to be battling the attached.