Schengen visas issued by Norway may be:
single-entry
double-entry
multiple-entry
They allow a total stay of up to 90 days within any 180‑day period across all Schengen countries.
A Norwegian national visa (D visa) or a residence permit is required if the stay exceeds 90 days or involves work, studies or family immigration.
Official Schengen short‑stay calculator can be found on the following link: