The more extensive the remodel the longer you will be without the kitchen. If walls, flooring, electrical, water, gas or vents are being moved you can count on a much longer time. If you are replacing cabinets exactly where you had existing and putting in laminate, it could be as short as a week. If you have a granite or quartz instead add another 2-3 weeks, as they have to measure the cabinets installed then make the tops and come back to install. If you have all of the above being changed your project could easily go into 6 weeks. Temporary solutions are available discuss them with your installer.