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DeWalt grinders are everywhere on UK sites, and for good reason. The 18v XR range is huge, and every current grinder has DeWalt's Perform & Protect features: an electronic clutch that reduces kickback if the disc pinches, an electronic brake, and soft start.
Choosing the best DeWalt angle grinder comes down to how much power you need and whether you want to invest in Flexvolt 54v batteries. Flexvolt packs also run 18v tools, so they are a good upgrade path.
Comparing with Makita? See our best Makita angle grinder guide.
At a glance: our top picks
- Best DeWalt angle grinder overall: DeWalt DCG405 18v XR Brushless 125mm (2 x 5.0Ah kit) – £331.95 at My Tool Shed
- Best compact DeWalt: DeWalt DCG404 18v XR Brushless Compact 125mm (bare) – £238.95 at My Tool Shed
- Best DeWalt variable speed: DeWalt DCG409VS 18v Flexvolt Advantage Variable Speed 125mm (bare) – £239.99 at My Tool Shed
- Most powerful DeWalt 125mm: DeWalt DCG418 54v Flexvolt 125mm (bare) – £319.95 at My Tool Shed
- Best DeWalt 230mm: DeWalt DCG460 54v Flexvolt 230mm (bare) – £339.99 at My Tool Shed
- Best DeWalt mini: DeWalt DCG430 18v XR Cut Off Tool 76mm (bare) – £235.95 at My Tool Shed
How we chose
We compared every DeWalt grinder from our UK retail partners and ranked them on value, power and how well each suits different users.
| Model | Disc | Battery | Best for |
|---|---|---|---|
| DCG404 | 125mm | 18v | Compact, all-day use |
| DCG405 | 125mm | 18v | All-rounder |
| DCG409VS | 125mm | 18v / Flexvolt | Variable speed, extra power |
| DCG418 | 125mm | 54v | Corded-level power |
| DCG440 | 180mm | 54v | Heavy grinding |
| DCG460 | 230mm | 54v | Concrete and thick steel |
The best DeWalt angle grinders to buy in 2026
1. DeWalt DCG405 18v XR Brushless 125mm (2 x 5.0Ah kit)
- Disc size125mm
- Power18v brushless
- In the box2 x 5.0Ah, charger, TSTAK case
- SafetyE-clutch, brake under 2s, no-volt release
Pros
- DeWalt quotes 69 cuts through 1/2" rebar per 5.0Ah battery
- Electronic clutch reduces kickback if the disc pinches
- Complete kit, ready to go
Cons
- No variable speed
- Dearer than bare tools if you already own DeWalt batteries
The DCG405 is the model most people should buy. The kit includes two 5.0Ah batteries, a charger and a TSTAK case, and the grinder has a brushless motor, e-clutch and a brake that stops the disc in under 2 seconds.
2. DeWalt DCG404 18v XR Brushless Compact 125mm (bare)
- Disc size125mm
- Power18v XR brushless
- SafetyE-brake, e-clutch, soft start
- In the boxBare tool
Pros
- Slim, compact body is easy to hold all day
- Electronic brake and clutch as standard
- Runs on any DeWalt 18v XR battery
Cons
- Battery and charger extra
- No variable speed
The newer, slimmer DCG404 is easier to hold for long periods and keeps the full Perform & Protect features. A great bare tool if you own XR batteries.
3. DeWalt DCG409VS 18v Flexvolt Advantage Variable Speed 125mm (bare)
- Disc size125mm
- Batteries18v XR or 54v Flexvolt
- SpeedVariable
- In the boxBare tool, case, side handle
Pros
- Extra power when fitted with a Flexvolt battery
- Variable speed for flap discs and brushing
- Perform & Protect safety features
Cons
- Needs a Flexvolt battery to get the most from it
- Slide switch rather than paddle
Add a speed dial and Flexvolt Advantage, and the DCG409VS handles polishing, brushing and heavy grinding. It is extra powerful with a 54v battery fitted.
4. DeWalt DCG418 54v Flexvolt 125mm (bare)
- Disc size125mm
- Power54v Flexvolt brushless
- Speed9,000rpm
- Weight2.4kg
Pros
- Corded-level cutting and grinding
- E-brake and e-clutch
- Recessed spindle lock for deeper cuts
Cons
- Flexvolt batteries are expensive
- Heavier than 18v models
Running purely on 54v Flexvolt, the DCG418 gives corded-level performance at 9,000rpm. A recessed spindle lock also gives a little extra cutting depth.
5. DeWalt DCG460 54v Flexvolt 230mm (bare)
- Disc size230mm
- Power2,800W
- Speed6,000rpm
- In the boxBare tool, case
Pros
- The most powerful cordless grinder in our list
- Wireless tool control
- Brake, clutch and soft start
Cons
- Needs 9Ah Flexvolt batteries to perform
- Heavy
2,800W from batteries. The DCG460 cuts concrete and heavy steel like a big corded grinder. It needs 9Ah Flexvolt packs. If you do not own them, the kit version is better value.
6. DeWalt DCG430 18v XR Cut Off Tool 76mm (bare)
- Disc size76mm
- Weight1.1kg
- Discs includedDiamond and bonded abrasive
- FeatureReversible disc direction
Pros
- Fits where a 125mm grinder cannot
- Reverse direction to send sparks away from you
- Light enough for one hand
Cons
- Shallow cut
- Bare tool
A 76mm cut-off tool for tight spaces, with switchable direction to control where sparks go.
Do you need Flexvolt?
Flexvolt batteries switch automatically between 18v and 54v. They run all 18v XR tools and power 54v tools like the DCG418 and DCG460. They are big, heavy and expensive, so only buy into Flexvolt if you regularly cut concrete, use 180mm or 230mm discs, or want corded-level power on a 125mm.
- Home and light trade: 18v XR with 5.0Ah batteries is plenty.
- Heavy fabrication or groundwork: Flexvolt is worth it.
Look at the letters after the model
N means bare tool. P2 means two 5.0Ah batteries. T2 means two 6.0Ah. Check the full code before you order.
For concrete work see our best angle grinder for concrete guide. For raw power across all brands, read our most powerful angle grinder round-up.
Quick buying checklist
- DCG406 over DCG405 if the price gap is small. It adds soft start and anti-restart.
- DCG409 for the E-CLUTCH anti-rotation system and extra power on FLEXVOLT.
- "N" means body only.
- At least a 5Ah battery.
- Paddle switch for site work.
Expert corner: reading a DeWalt model code
| Suffix | What you get |
|---|---|
| N | Body only. No battery or charger. |
| M2 | Two 4.0Ah batteries, charger and case. |
| P2 | Two 5.0Ah batteries, charger and case. |
| T1 / T2 | One or two 6.0Ah FLEXVOLT batteries, depending on the model. Check the listing. |
FLEXVOLT batteries work in 18V XR tools as well as 54V FLEXVOLT tools. DeWalt says the DCG409 delivers up to 54% more power on a FLEXVOLT 6Ah pack than on a standard 18V 5Ah pack.
Expert tips that save time and money
- Kickback brake and E-CLUTCH are worth it. They cut power and stop the disc if it pinches.
- Use a big pack. DeWalt grinders feel noticeably stronger on 5Ah and FLEXVOLT batteries than on 2Ah.
- Check the kit contents twice. Suffixes vary between retailers and bundles.
- Comparing brands? See our Makita guide and cordless guide.
- Want DeWalt's most powerful grinders? They are in our most powerful grinder guide.
What owners actually say
These points come from UK trade and hobby forums. We have linked each thread so you can read the full discussion.
- UK owners on the MIG Welding Forum praise DeWalt 125mm grinders as "very handy for the extra capacity on cutting discs". (MIG Welding Forum: what size angle grinder)
Beginner mistakes to avoid
We see these again and again
- Buying the DCG405 when the DCG406 costs only a little more.
- Ordering an "N" model and expecting a battery.
- Running a FLEXVOLT-capable grinder on 2Ah packs.
- Assuming every DeWalt grinder has a kickback brake. Check the spec.
Read the disc before you fit it
Every resin-bonded cutting or grinding disc sold in the UK carries markings under EN 12413. Two matter most:
- The use-by date is stamped on the metal centre ring as a "V" followed by the date, for example V12/2027. It is set no more than three years after manufacture. Out-of-date resin bonds can break up at speed.
- The maximum rpm must be equal to or higher than your grinder's no-load speed.
A disc's limit is really its rim speed, usually 80 metres per second. That is why bigger discs are rated for lower rpm: 80 m/s works out at about 13,300rpm for a 115mm disc, 12,200rpm for 125mm, 8,500rpm for 180mm and 6,600rpm for 230mm. Never fit a worn-down 230mm disc to a small grinder. It is still only rated for about 6,600rpm, and a 125mm grinder spins nearly twice that fast.
Sources: DCG405 vs DCG406 specification comparison · DeWalt UK: DCG409 · DeWalt model numbers explained · MIG Welding Forum: what size angle grinder · HSE HSG17: Safety in the use of abrasive wheels · Abrasive wheel marking explained (EN 12413)
Frequently asked questions
Which DeWalt angle grinder is best?
The DCG405 kit for most people. Choose the DCG404 if you want smaller and lighter, or the DCG409VS for variable speed.
What is the difference between the DCG405 and DCG404?
The DCG404 is a newer, slimmer compact design. Both are 125mm brushless with a brake and e-clutch.
Can I use a Flexvolt battery in an 18v DeWalt grinder?
Yes. Flexvolt batteries work in all DeWalt 18v XR tools, and Flexvolt Advantage models like the DCG409VS get extra power from them.
What is DeWalt Perform & Protect?
DeWalt's safety features: e-clutch to reduce kickback, electronic brake and soft start.
What does "P2" mean on a DeWalt grinder?
Two 5.0Ah batteries, a charger and usually a case.
What is DeWalt E-CLUTCH?
An anti-rotation system that cuts power if the disc pinches and the tool starts to twist, reducing kickback.
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