Cordless Drill Torque Explained: What Nm Means UK

That big Nm number on the box is useful — but it is not the whole story. A 40 Nm 12V drill and a 60 Nm 18V drill can feel completely different in your hand, and the one with the smaller number is often the nicer tool for DIY. This guide explains what cordless drill torque actually measures, how much you need for common UK jobs, and which specs are worth comparing before you buy.

If you are choosing between voltages, our 12V vs 18V cordless drill guide pairs well with this — it covers weight, battery life and when 12V is genuinely enough. For a straight shortlist, see the best 12V cordless drills and the best cordless drills overall.

What torque (Nm) actually measures

Torque is twisting force. One newton-metre (Nm) is the force it takes to turn a bolt with one newton of push on a one-metre lever. On a drill, the manufacturer measures the maximum stall torque the motor and gearbox can deliver before the chuck stops turning.

There are two numbers you will see. Hard torque (sometimes called max or stall torque) is measured into a fixed fixture — it is the peak the tool can hit for a split second. Soft torque is measured into a spring or joint that absorbs energy, closer to driving a screw into timber. Soft torque is almost always lower than hard torque, and it tells you more about day-to-day use. If a listing only gives one number and does not say which, assume it is the hard figure.

That matters because drilling and driving are different jobs. Drilling needs speed to clear chips and keep the bit cutting. Driving needs controlled torque so you stop at flush without stripping the head. A drill that quotes 60 Nm of hard torque but spins slowly in top gear can feel less useful than a 45 Nm drill that holds speed under load. This is why the headline Nm pays to read alongside no-load speed (RPM) and the gearbox layout. For the basics of speed versus torque, our cordless drill voltage and brushless guide explains how motor design changes the feel in the hand.

Why 12V and 18V feel different even at similar Nm

Voltage is the battery platform. 12V CXT and 12V FlexiClick tools use smaller cells and lighter bodies, while 18V LXT and 18V ONE+ tools use larger cells that store more energy and sustain higher current. Two consequences follow.

First, runtime. An 18V pack typically holds roughly 50-80% more watt-hours than a like-for-like 12V pack, so it will drive more screws between charges. Second, weight and balance. The best 12V models such as the Makita DF033DWAE 12V CXT Drill Driver Kit sit around 1.0-1.2 kg with battery, which makes overhead work and long sessions far less tiring than a 1.7-2.0 kg 18V combi. That comfort is why many UK DIYers who already own an 18V combi still reach for a 12V driver for kitchen fitting, flat-pack and general fixing.

Torque and voltage relate but they are not the same spec. A well-geared 12V drill can deliver 30-35 Nm of useful soft torque, which covers most household jobs. An 18V combi adds headroom for masonry, large auger bits and long structural screws, but you pay for it in size. If you already have a strong 18V kit and want a lighter second drill, see our when is 12V enough guide.

How much torque do you actually need in the UK?

Use this as a working rule for timber, plasterboard, soft brick and general DIY. Go heavier for hard brick, concrete, or structural timber.

If most of your work is fixing into timber, plasterboard and light metal, 30-40 Nm of soft torque covers you and you will appreciate the lighter body more than the extra headroom. If you regularly drill 6mm+ into UK stock brick or drive long screws into joists, buy for 45 Nm soft or 55 Nm+ hard and use low gear. Our cordless drill roundup lists published soft-torque ranges where brands publish them.

The three specs that matter alongside Nm

1. Gears and no-load speed

Two-speed gearboxes give you a slow, high-torque gear for driving and a fast gear for drilling. Check the RPM in both gears. A useful pairing is around 0-500 RPM in first gear and 0-1,700 RPM in second for an 18V combi, and around 0-450 / 0-1,700 for a compact 12V. If a drill quotes big torque but only 1,300 RPM top speed, it will feel sluggish on pilot holes. See the 18V cordless drill buying guide for how speed, gearbox and brushless motors interact.

2. Clutch settings and electronics

The clutch is the numbered collar near the chuck. It limits torque so you stop at the head without chewing the board. Twenty clutch settings plus drill and hammer modes is a good baseline for a DIY combi. Brushless motors add finer electronic control. They hold speed better as the bit bites and they waste less battery as heat, which is part of why a brushless 12V can feel punchier than a brushed 18V despite the lower voltage. If you are unsure what drill bit types to pair with each mode, that guide shows which bits want hammer, which want low gear, and which want high speed.

3. Battery amp-hours and cell quality

Torque is delivered by current, and current is limited by the pack. A 2.0 Ah 18V pack holds about 36 Wh; a 4.0 Ah pack holds about 72 Wh and sags less under load, so you keep more of the quoted torque for longer. For 12V, 2.0 Ah is the sweet spot for weight versus runtime; carry a second compact pack rather than one heavy 4.0 Ah if you value balance. Keep cells cool and avoid leaving them on charge for days — our cordless drill battery care guide covers storage, charging and when to replace a tired pack.

Torque in practice — settings and technique

Start with the clutch low and work up. Drive a test screw, check whether the head sits flush or proud, then click up one setting and try again. For MDF and softwood, mid-range clutch prevents tear-out around the head. For hardwoods and large screws, go higher or switch to drill mode and control depth by feel. When drilling masonry, use hammer mode only with masonry bits and keep the drill straight — leaning adds side load that heats the bit and wears the hammer mechanism faster. Our guide to how to drill into brick shows the full sequence for UK stock brick.

Use the right bit for the job and keep it sharp. A sharp 5mm HSS bit through steel needs less torque and leaves a cleaner hole than a blunt 6mm bit ever will. If you are seeing burning, squealing or the drill stalling, you are either in the wrong gear or pushing the wrong bit type — drop to low gear, reduce pressure and let the speed do the work. Bit choice matters enough that we wrote a dedicated piece — drill bit types explained — to match bit, material and mode.

Products mentioned in this guide

Frequently Asked Questions

Final verdict

Buy for the torque you will actually use, not the biggest number on the shelf. For most UK homes, a well-geared 12V driver in the 30-40 Nm soft window — for example the Makita DF033DWAE or the Bosch FlexiClick — is the sweet spot of power, weight and price. If you want that headroom without moving to 18V bulk, the DeWalt DCD703F1 is the 12V that punches closest to 18V. If masonry, large augers or long structural screws are weekly work, step to an 18V combi — our 18V kit roundup compares the best of them side by side.

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Last reviewed: 23 August 2026 · Evidence-based content · Contains affiliate links