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Credit card width
Exact matchStandard credit card width (exact: 53.98mm)
Everyday Items
Conversion breakdown
55.2 mm to inches
mmtoinches.imView decimal inches, fractional inches (1/32" precision), and feet+inches for 55.2 millimeters. Perfect for CNC setups, woodworking, construction documents, and any workflow where a single metric dimension needs multiple imperial formats.
Decimal inches
2.1732"
55.2 mm = 2.1732" (rounded to four decimals)
Fractional inches (1/32")
2 3/16"
Error ±0.014272"
Feet + inches
2.1732"
Total inches 2.1732"
Real-world size reference
Visualize 55.2 mm with familiar everyday objects and common items for better understanding.
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Tennis ball diameter
Close matchTennis ball is 65-68mm in diameter
Everyday Items
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Chicken egg width
Close matchAverage chicken egg width
Nature & Biology
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 55.2 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 55.2 mm. Toggle between scaled comparison and 1:1 actual size using the button above.
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Common questions about 55.2 mm
Quick answers to frequently asked questions about this measurement, conversions, and practical applications.
55.2 mm equals 2.1732 inches. This conversion uses the international standard where 1 inch = 25.4 millimeters exactly.
Use millimeters when working with metric tools, international standards, or technical specifications. Use inches for imperial-system projects, construction in the US/UK, or when collaborating with teams using imperial measurements. For precision machining, decimal inches are preferred over fractions.
Still have questions? Try the interactive converter for more conversion options and tools.
Related conversions
Commonly used sizes near 55.2 mm, grouped by relevance. Each recommendation includes context to help you find the right conversion quickly.
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Woodworking & DIY
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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 55.2 mm (~2.1732 in), This falls in a common fabrication / home‑improvement range. Use decimal inches for calculations; fractional inches aid field readability; consider adding tolerances on drawings.