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M12 bolt diameter
Exact matchConstruction and machinery fastener
Hardware & Fasteners
Conversion breakdown
12 mm to inches
mmtoinches.imView decimal inches, fractional inches (1/32" precision), and feet+inches for 12 millimeters. Perfect for CNC setups, woodworking, construction documents, and any workflow where a single metric dimension needs multiple imperial formats.
Decimal inches
0.4724"
12 mm = 0.4724" (rounded to four decimals)
Fractional inches (1/32")
15/32"
Error ±0.003691"
Feet + inches
0.4724"
Total inches 0.4724"
Real-world size reference
Visualize 12 mm with familiar everyday objects and common items for better understanding.
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1/2" drill bit
Close match12.7mm (1/2 inch) drill bit
Tools & Workshop
Note about measurements
Exact matches indicate precise dimensional equivalence. Close matches show similar sizes for visual reference. Always verify exact specifications for precision work, especially in engineering, manufacturing, or construction applications.
Visual size comparison
See how 12 mm compares to common reference sizes
Sizes are scaled for comparison. Click "Show 1:1 actual size" above to see the true physical size.
Tip: This visualization helps you quickly understand the relative size of 12 mm. Toggle between scaled comparison and 1:1 actual size using the button above.
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Common questions about 12 mm
Quick answers to frequently asked questions about this measurement, conversions, and practical applications.
12 mm equals 0.4724 inches. This conversion uses the international standard where 1 inch = 25.4 millimeters exactly.
12 mm is a medium drill bit size widely used in woodworking and metalworking. Common applications include M12 bolts, automotive suspension, and industrial machinery.
15/32" (11.91mm) is very close. Acceptable for clearance holes but verify for tapping. Difference: 0.09mm.
12mm is approximately the diameter of a US penny (19mm is too large, so 12mm is about the size of a small button or a standard marble).
Acceptable tolerance depends on your application. General woodworking: ±0.5mm is typical. Metal fabrication: ±0.1-0.3mm. Precision machining: ±0.01-0.05mm. Electronics: ±0.02mm or tighter. Always check your project specifications or industry standards.
Still have questions? Try the interactive converter for more conversion options and tools.
Related conversions
Commonly used sizes near 12 mm, grouped by relevance. Each recommendation includes context to help you find the right conversion quickly.
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Fasteners & Hardware
Based on 12 mm, these tools and references may be helpful for your project.
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Conversion details
All calculations rely on the international standard of 1 inch = 25.4 millimeters. Decimal values are rounded to four places, fractional results use 1/32" increments with automatic simplification, and feet+inches formatting is ideal for dimensions above 300 mm. For higher precision, URL parameters, or bulk conversion needs, head back to the main calculator or batch converter.
At 12 mm (~0.4724 in), This is a small precision dimension. Fractional output (1/32") helps with fine workmanship; keep decimal inches for calculations and tolerance notes.