Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
2 of 3 tools
Tool comparison

DeWalt DCF921 vs Milwaukee M18 BIW12

They differ in 5 of 6 areas. Specs, battery platforms and every way each one is sold, from the makers' own figures.

They differ in 5 of 6 areas

No overall winner: these are the figures that separate them, from each maker's own documentation.

SpecDeWalt DCF921Milwaukee M18 BIW12
Max torque406Nm240Nm
Max RPM0–1400 / 25000–2450
Impacts per minute3550ipm3350ipm
Speed settings41
Tool length125mm155mm
Weight (bare)1.1kg1.2kg
Weight (with battery)1.71kg1.9kg
Noise97 dB(A) LpA / 108 dB(A) LwA94.1 dB(A) LpA / 105.1 dB(A) LwA
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