Torque on a drill is the rotational force that turns a bit or drives a screw into material. It’s essentially twisting power. The higher the torque, the more force the drill can apply to rotate a fastener or bore through tough material. When you see torque numbers on a drill’s spec sheet or on the numbered collar near the chuck, they all relate to how much turning strength the tool delivers.
How Torque Works in Simple Terms
In physics, torque is the product of force and distance from a pivot point. On a drill, the motor generates rotational energy, and that energy transfers through the gears to the chuck, which holds the bit. The result is twisting force at the tip of the bit. More torque means the drill can push a longer screw into denser material without stalling. Less torque means less resistance before the drill gives up or slows down.
Drill torque is measured in Newton-meters (Nm) in most of the world, or inch-pounds (in-lbs) in the United States. One Newton-meter equals about 8.85 inch-pounds. A typical homeowner’s cordless drill produces somewhere between 20 and 60 Nm of torque, while heavy-duty models can exceed 100 Nm. These numbers appear on the packaging or in the tool’s spec sheet, and they tell you the maximum twisting force the drill can produce.
What the Numbered Ring on Your Drill Does
Most cordless drill/drivers have a rotating collar near the chuck with numbers printed on it, usually ranging from 1 to about 15 or 20. This is the clutch, and each number represents a torque limit. Setting the collar to a lower number means the drill will stop driving at a lower level of resistance. Setting it higher lets the drill push through more resistance before it disengages.
When the drill hits the torque limit you’ve set, the clutch kicks in and you’ll hear a clicking sound. The motor keeps spinning, but the chuck stops turning. This prevents the screw from being driven any deeper. It’s one of the most useful features on a drill, because it lets you drive dozens of screws to exactly the same depth without thinking about it.
Past the highest number, you’ll usually see a drill bit icon. This setting bypasses the clutch entirely, giving you maximum torque with no automatic shutoff. You’d use this for drilling holes, where you want continuous power and don’t need the clutch to protect a fastener.
Torque vs. Speed: The Tradeoff
Torque and speed (measured in RPM) have an inverse relationship on a drill. When you increase one, the other decreases. A setting that delivers more twisting force spins the bit more slowly, and a setting that spins fast delivers less force per rotation. This is the same principle behind bicycle gears: a low gear gives you more pedaling power but less speed.
That’s why most cordless drills have a two-speed switch, usually located on top of the tool. Gear 1 is low speed, high torque, designed for driving screws and fasteners. Gear 2 is high speed, low torque, designed for drilling holes. Drilling through wood or metal requires speed to cut efficiently, while driving a screw requires slow, powerful rotation to push it into the material without stripping it.
Matching Torque to the Task
Using the right amount of torque for the job protects both the material and the fastener. Too much torque on a small screw can strip the screw head, leaving a chewed-out recess that the bit can’t grab anymore. In soft materials like drywall, excessive torque can crush the anchor or drive the screw straight through. In wood, it can split the grain or sink the screw so deep it loses holding strength.
For light work like assembling furniture or attaching cabinet hardware, start with a low clutch setting (2 to 5) and work your way up if the screw isn’t seating fully. For driving long screws into framing lumber or dense hardwood, you’ll want a high clutch setting or even the full drill mode, combined with Gear 1 for maximum torque. The general rule: start low and increase until the screw seats flush. It’s much easier to add a little more torque than to fix a stripped screw or cracked board.
How Impact Drivers Deliver Torque Differently
A standard drill/driver applies torque as a constant, smooth rotation. An impact driver delivers torque in rapid bursts, like a hammer tapping a wrench thousands of times per minute. This pulsing mechanism generates significantly higher torque (often 150 Nm or more) without transferring as much reactive force into your wrist.
The burst delivery has a practical advantage: because the force isn’t continuous, the bit is less likely to cam out of the screw head, which reduces stripping. It also nearly eliminates kickback. On a standard drill, if the bit binds in a hole, the constant rotation can jerk the entire tool in the opposite direction, which is hard on your hands and wrists. An impact driver stalls in small increments instead of snapping backward all at once.
The tradeoff is control. Impact drivers don’t have adjustable clutch settings, so you can’t dial in a precise torque limit the way you can with a drill/driver. For tasks where consistent screw depth matters, like installing drywall or decking, a drill/driver with its numbered clutch is the better choice. For driving large lag bolts or long structural screws where you just need raw power, the impact driver wins.
What Torque Specs to Look For
If you’re shopping for a drill, the torque rating tells you what the tool can handle at its maximum setting. For general household use, 30 to 50 Nm covers most tasks: hanging shelves, assembling furniture, drilling into wood and light metal. For deck building, framing, or working with masonry anchors, look for 60 Nm or higher. Professional-grade drills and impact drivers can reach 200 Nm or beyond, but most homeowners will never need that much force.
Keep in mind that the advertised torque number is the maximum the tool produces in its lowest gear. Actual torque at the bit depends on your speed setting, clutch position, battery charge level, and how sharp the bit is. A fresh battery and a sharp bit will always outperform the same drill with a half-dead battery and a dull bit, regardless of the spec sheet number.