In the Netherlands and most other European countries the comma is used as decimal separator, but keyboards with English (United States) layout is used. So when Kendo UI uses the nl-NL culture, you cannot use the decimal point on the numeric keypad and you are forced to use the comma on the main keyboard. Applications like Excel implement this correctly by translating the decimal point on the numeric keypad to the decimal separator of the current locale. Would be very helpful if it would be implemented there also.