Measure off the amount you need to cut with a tape measure and make the mark on the flooring. Make a straight line using a speed square or carpenter's square.
Place the snap-lock flooring face up on a pair of saw horses. You must cut the flooring face up to help reduce chipping damage.
Install a plywood saw blade into your circular saw. Fine-tooth plywood cutting blades cut through the snap-lock laminate without chipping the flooring.
Plug the circular saw power cord into an outlet, and line up the blade with your cut line. Press the power trigger and allow the saw blade to cut through the snap-lock flooring by applying light pressure.
Alternatively you can use a miter saw with a plywood cutting blade.