Place a long straightedge down to draw a marker line on the back of the carpet where a straight cut is required and then keep the straightedge on that line as you make the cut.
Easiest way to cut up carpet.
You can buy one here.
Use a utility knife or carpet knife to slice the carpet into manageable strips and roll the strips up as you go.
Continue pulling up carpet a few feet at a time and cutting it into easy to handle strips.
Keep pulling back the carpet and slicing it into strips.
Instead of raking your blade across the carpet and through the padding to make a cut just make a 4 5 inch hole and.
Roll or fold the strip secure with duct tape and remove it from the room.
Use the harbor freight oscillating multi tool cutting tool to easily cut your carpet.
Use a utility knife with a sharp new blade to cut through the carpet backing.
While it is possible to cut the carpet from the top side you can achieve a cleaner cut by flipping the carpet over and cutting it from the back side of the material.
Keep both hands on the knife to avoid cutting a free hand.
Carpet is much easier to cut from the back than from the front.
If your carpet is tacked down with staples or adhesive it may take a little effort to get it started by hand.
Reach into the slit you just cut and lift the carpet away from the floor.
One way to do this is to lift the carpet away from the floor as you cut.
The back of the material may also be marked with pencils markers or a chalk line for reference points while cutting which is more accurate than trying to cut from the top side.
Easiest method to cut carpet.
You may need to change the blade several times during a large carpet project.
Pull up on the loose carpet with your free hand.
If you are trying to salvage the floor underneath make sure you do not cut grooves in the floor with the knife.
Use a sharp new blade in your utility knife and be careful not to slice into baseboard or walls.