The application Salary Gross / Net will convert gross in net and while taking vice versa into account the different social security rate in force in France and get the same accuracy as your business.
These settings can be changed (in the options menu) based on the payroll tax rate charged on your business.

You will be able to convert, at the same time and very simply, your hourly gross wages, gross daily, monthly and annual gross crude equivalent pay.
The weekly number of hours is 35 hours, but you can also change it in the options menu.
It is also possible to change the number of months worked.
N.B: The minimum wage in 2018 is set at € 9.88 Gross / time, the application will do the rest!
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For suggestions on adding features or bug discovery, thank you to let me know in the comments (Notice), thank you!