17 millimeters to inches
0.67 in
17 mm = 0.67 in.
inches
0.67in
17 mm = 0.67 in
In short
How many inches is 17 millimeters?
17 mm = 0.67 in. 1 millimeter = 0.039370 inches, so the working is 17 × 0.039370 = 0.67.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 millimeter = 0.039370 inches 17 × 0.039370 = 0.67
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (in) | Off by |
|---|---|---|
| Whole number | 1 | +0.33071 |
| 1 decimal | 0.7 | +0.03071 |
| 2 decimals | 0.67 | +0.00071 |
Round trip: take 0.67 in back the other way and you land on 17.0180 mm — a drift of 0.0180 mm. That gap is the rounding, not the conversion.
Frequently asked questions
What is 17 millimeters in inches?
17 millimeters is 0.67 inches. 1 millimeter = 0.039370 inches, so the working is 17 × 0.039370 = 0.67.
How accurate is 0.67 in?
Rounding to 0.67 in and converting straight back gives 17.0180 mm, a drift of 0.0180 mm from the 17 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Mm to Inches Converter
Convert millimeters to inches — hardware, drill bits, screens, and drawings.
Open the mm to inches converter →