How do I round a float upwards to the nearest int in C#?

c# .net rounding
Axajian picture Axajian · May 25, 2009 · Viewed 113.7k times · Source

In C#, how do I round a float upwards to the nearest int?

I see Math.Ceiling and Math.Round, but these returns a decimal. Do I use one of these then cast to an Int?

Answer

Matt Brindley picture Matt Brindley · May 25, 2009

If you want to round to the nearest int:

int rounded = (int)Math.Round(precise, 0);

You can also use:

int rounded = Convert.ToInt32(precise);

Which will use Math.Round(x, 0); to round and cast for you. It looks neater but is slightly less clear IMO.

If you want to round up:

int roundedUp = (int)Math.Ceiling(precise);

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