Best Angle Grinder for Cutting Rebar 2026
Hacksaw vs Angle Grinder: The Math
A hacksaw takes about 2 minutes and significant arm fatigue to cut through a single piece of #4 (1/2") rebar. An angle grinder with a 0.045" cutting disc does the same cut in 8 seconds. If you're cutting 20 pieces of rebar for a concrete patio pour or retaining wall footing, that's the difference between a miserable 40-minute arm workout and a 3-minute job.
You don't need a $200 grinder for rebar. A $59 grinder with the right disc will cut rebar all day. What matters more than the grinder is the disc — and your safety gear.
Our Top Picks
| Pick | Model | Price | Best For |
|---|---|---|---|
| 🏆 Best Overall | Makita 9557PB | $69 | Everything — rebar, metal, masonry |
| 💰 Best Budget | WEN 944 | $29 | One project. Fewer than 100 cuts |
| 🔋 Best Cordless | DeWalt DCG413B | $119 | Jobsite without power, remote work |
Best Discs for Cutting Rebar
| Disc | Thickness | Lifespan | Price | Best For |
|---|---|---|---|---|
| DeWalt DW8061 | 0.045" | ~80 cuts | $9 (5-pack) | #3-#5 rebar, fast cuts |
| Makita 724118-A | 0.045" | ~90 cuts | $8 (5-pack) | General rebar and metal cutting |
| Diablo DBD045063701F | 0.040" | ~100+ cuts | $12 (5-pack) | Heavy use, professional quality |
Best Overall: Makita 9557PB
Makita 9557PB 4-1/2" Angle Grinder
7.5A · 11,000 RPM · 4.5 lbs · Paddle switch · 1-year warranty
Check price on Amazon →The Makita 9557PB is the default rebar-cutting grinder for a reason: it's smooth, reliable, and $69. The 7.5-amp motor has enough power that you don't need to push the disc through the steel — just let the RPM do the work. The paddle switch is a safety must-have for rebar work. When you're moving between pieces of rebar on the ground, you want a tool that stops the instant you release the trigger.
Best Budget: WEN 944
At $29, the WEN 944 costs less than some 5-packs of premium cutting discs. It's a bare-bones grinder — slide switch instead of paddle, 6-amp motor instead of 7.5, plastic body instead of metal gear housing. But for a single concrete project with 50–100 rebar cuts, it'll finish the job. By the time it overheats, you'll be done. Just wear gloves and keep both hands on it. The slide switch means it stays on when you let go.
How to Cut Rebar Cleanly With an Angle Grinder
Mark your cut with soapstone or a paint marker.
Pencil lines disappear under sparks. Use a white or yellow paint marker. Mark all four sides if precision matters.
Secure the rebar.
Rebar will spin if it's not secured. Step on it with a heavy boot, clamp it to a sawhorse, or use a bench vise. Never hold rebar with one hand and cut with the other.
Score a shallow groove first.
Run the disc lightly along the cut line to create a shallow groove. This guides subsequent passes and prevents the disc from wandering.
Cut through in 2-3 passes.
Don't try to cut through in one pass. Light pressure, let the disc do the work. 2-3 passes give you a cleaner cut with less disc wear.
Deburr the cut end.
A fresh rebar cut has a razor-sharp burr. Hit it with the grinder at a 45° angle for two seconds to knock it off. Future you will thank you when you're not bleeding through your work gloves.
⚠️ Face shield mandatory. Not optional.
Cutting rebar sprays a fan of hot metal sparks and microscopic steel particles. Safety glasses alone are not sufficient. Face shield over safety glasses. Long sleeves. No synthetic fabrics — sparks will melt polyester into your skin. Cotton or leather only.
Disc Selection for Rebar
Use a 0.045" thick cutting disc — never a grinding wheel or a thick cut-off wheel. The thin disc reduces friction, cuts faster, and generates less heat. A thicker disc (0.090" or 1/8") will cut slower and generate more heat, which work-hardens the rebar and makes the cut harder. For #6 (3/4") rebar and above, make two passes from opposite sides rather than trying to cut through in one pass — the disc will wear evenly and you'll get a square cut.
The Bottom Line
For cutting rebar on a home concrete project: Makita 9557PB at $69 + DeWalt DW8061 5-pack cutting discs at $9. Total investment: under $80 for a setup that'll cut hundreds of pieces of rebar. Single project on a tight budget: WEN 944 at $29 — it costs less than renting the Makita for two days. And seriously: face shield. Every cut.