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Editorial Team
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Asked: 2026-05-13T16:22:24+00:00

I have the following string: 3.39112632978e+001 which I need to convert to float. WolframAlpha

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I have the following string: “3.39112632978e+001” which I need to convert to float. WolframAlpha says that the result of this value is 33.9112632978 which evidently I should get somehow and I couldn’t figure out how.

Single.Parse("3.39112632978e+001") gives 3.39112624E+12

Double.Parse("3.39112632978e+001") gives 3391126329780.0

float.Parse("3.39112632978e+001") gives 3.39112624E+12

What should I do?

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1 Answer

  1. Editorial Team

    You are experiencing a localization issue wherein the . is being interpreted as a thousands separator instead of as a decimal separator. Are you in, say, Europe?

    Try this:

    float f = Single.Parse("3.39112632978e+001", CultureInfo.InvariantCulture);
Console.WriteLine(f);

    Output:

    33.91126

    Note that if we replace the . by a , then we see the behavior that you are experiencing:

    float g = Single.Parse("3,39112632978e+001", CultureInfo.InvariantCulture);
Console.WriteLine(g);

    Output:

    3.391126E+12

    This supports my belief that you are experiencing a localization issue.

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