Impact Driver vs Drill: Which One Do You Actually Need?
The Short Answer
If you're only buying one: get a drill. It does more things. If you do any serious DIY — building a deck, framing a wall, driving 3-inch screws all day — get both. They do different jobs and together they cover almost everything.
What a Drill Does
A drill spins a bit continuously. That makes it good at:
- Drilling holes — in wood, metal, plastic, drywall, masonry (with hammer mode)
- Driving screws — into softer materials where you need controlled speed
- Mixing paint, grout, or thin-set — with a mixing paddle attachment
- Light sanding or polishing — with the right attachments
A drill's clutch lets you set a torque limit, so you don't over-drive a screw or strip the head. This is essential for finish work.
What an Impact Driver Does
An impact driver looks like a short, stubby drill. But inside, there's a hammer-and-anvil mechanism that delivers rapid rotational impacts — about 50 per second. This concentrated, percussive force makes it far better at:
- Driving long screws and lag bolts — into wood, metal, or concrete. Things a drill would stall on
- Removing stuck or rusted fasteners — the impacts break corrosion loose
- Working in tight spaces — impact drivers are shorter than drills
An impact driver uses 1/4-inch hex bits — not a drill chuck. So you can't put a regular round-shank drill bit in it without an adapter. This is the key physical difference.
Comparison at a Glance
| Drill | Impact Driver | |
|---|---|---|
| Drilling holes | ✅ Excellent | ❌ Not designed for it |
| Driving screws | ✅ Good | ✅ Excellent |
| Driving lag bolts | ⚠️ Struggles | ✅ Excellent |
| Precision/finish work | ✅ Excellent (clutch) | ⚠️ Less control |
| Removing stuck fasteners | ⚠️ May strip heads | ✅ Excellent |
| Noise level | Quiet | Loud (impacts are noisy) |
| Bit compatibility | Round + hex shank | 1/4" hex only |
Which Should You Buy First?
Start with a drill. It's more versatile. You can drill holes, drive screws (with the clutch), and mix materials. When you find yourself driving 3-inch screws and wishing the drill had more guts — that's when you buy an impact driver.
If you're buying a house or planning a major renovation, just get both. A combo kit like the Makita XT269M ($229 for both tools + batteries + charger) is cheaper than buying them separately. You'll use the drill for holes and the impact driver for screws, and you'll wonder why you ever did it differently.
The Bottom Line
A drill comes first. An impact driver is the best second tool you'll ever buy. For a major project, buy both in a combo kit.