Convert 1/16 Inches to MM - Accurate Calculator
Convert 1/16" to millimeters with high precision
Results at Different Precisions
🔧 DIY & Hardware
For hardware and DIY projects, 1/16" equals 1.59 mm, which is essential when working with metric tools or international specifications.
⚙️ Engineering & Manufacturing
In engineering contexts, 1/16" converts to 1.587500 mm with high precision for accurate technical specifications.
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Exact answer, measurement guidance, and nearby sizes
Direct answer and formula
1/16 inches is 1.5875 mm exactly because the international inch is exactly 25.4 mm.
1/16 × 25.4 = 1.5875 mm
Basis: 1 inch = 25.4 mm exactly (international inch definition)
Rounding, fractions, and tolerance
The converted value 1.5875 mm is exact. To one decimal it is 1.6 mm; the nearest 0.5 mm is 1.5 mm (difference 0.0875 mm), and the nearest whole millimeter is 2 mm (difference 0.4125 mm). Rounded metric sizes are not interchangeable unless that difference fits the tolerance budget.
A nearby rounded size is acceptable only when its absolute difference is within the documented dimensional tolerance and all non-dimensional compatibility checks pass.
Drill and clearance review
Use 1/16 inches in this drill and clearance review workflow: an inch drawing calls out a small hole or clearance and the available inspection tools read millimeters. Here the metric/imperial counterpart is 1.5875 mm. Convert the callout, then evaluate the specified clearance instead of automatically selecting the closest metric drill.
- Convert the callout, then evaluate the specified clearance instead of automatically selecting the closest metric drill.
- A cutting tool may produce a hole different from its nominal diameter.
Illustrative measurement workflow; it does not claim that this value is a standard product size.
Editorial measurement check
For a physical check, repeat the reading at more than one relevant location before relying on a single converted number.
A nearby catalog or tool size is only a candidate for review; numerical proximity does not establish interchangeability.
Verify the final setting with the instrument or template used in the real workflow before releasing the dimension.
Nearby comparison and substitution boundary
Nearest-0.5-mm rounding maps exact results from 1.25 mm up to (but not including) 1.75 mm to 1.5 mm with half-up ties. Using 1.5 mm as a physical substitute changes this dimension by 0.0875 mm; verify fit, thread, clearance, or process allowance as applicable.
Candidate: 1.5 mm; absolute difference: 0.0875 mm.
Questions about this exact conversion
How do you convert 1/16 inches?
1/16 inches is 1.5875 mm exactly because the international inch is exactly 25.4 mm.
How should 1.5875 mm be rounded for a measurement?
The converted value 1.5875 mm is exact. To one decimal it is 1.6 mm; the nearest 0.5 mm is 1.5 mm (difference 0.0875 mm), and the nearest whole millimeter is 2 mm (difference 0.4125 mm). Rounded metric sizes are not interchangeable unless that difference fits the tolerance budget.
How should 1/16 inches be used in the drill and clearance review workflow?
Convert the callout, then evaluate the specified clearance instead of automatically selecting the closest metric drill. A cutting tool may produce a hole different from its nominal diameter.
Is the closest rounded size interchangeable with 1/16 inches?
Nearest-0.5-mm rounding maps exact results from 1.25 mm up to (but not including) 1.75 mm to 1.5 mm with half-up ties. Using 1.5 mm as a physical substitute changes this dimension by 0.0875 mm; verify fit, thread, clearance, or process allowance as applicable.