What Can You Cut With a Utility Knife?
A utility knife is a good choice when you need a straight, controlled cut through a material that is too tough for scissors but does not call for a saw. We use one for everyday jobs such as opening cardboard boxes, trimming sheet materials, and fitting supplies for small home projects. The right blade and a stable work surface make the difference between a clean cut and a frustrating one.
Everyday materials
Cardboard, paperboard, packing tape, and plastic packaging are common utility-knife jobs. A sharp blade can also cut carpet, vinyl flooring, adhesive shelf liner, thin foam, and many types of weatherstripping. For thicker materials, make several light passes rather than trying to force the blade through in one stroke. When cutting carpet or flooring, use a straightedge where possible and protect the surface underneath.
Materials you score rather than slice
Drywall is a classic example: score the paper face with the knife, snap the panel along the line, then cut the backing paper. Some rigid foam boards and thin plastic sheets can be scored and snapped in a similar way, depending on their thickness. Keep the straightedge firmly in place, and make your first pass light so the blade does not wander.
When to choose a different tool
A utility knife is not the best tool for metal, glass, masonry, thick wood, or anything that requires heavy pressure to cut. Use shears, a saw, or another tool suited to the material instead. We also recommend avoiding freehand cuts toward your body and never holding the material in your other hand directly behind the blade. Retract or cover the blade as soon as you finish.
If you are preparing a home-comfort project, a utility knife can help trim weatherstripping, cut packaging, or size certain insulation materials. Match the blade to the job, wear appropriate hand and eye protection, and follow the material maker’s handling instructions. For more ways to improve comfort while managing energy costs, see our guide to lowering utility bills without sacrificing home comfort.
FAQ
How do you keep a utility-knife cut straight?
Mark your line, place the material on a protected, stable surface, and guide the blade alongside a firmly held straightedge. Use light, steady passes and replace the blade if it starts to drag or tear the material.
