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1 mm to inches
1 mm equals 0.0394 in. This is the exact conversion for 1 mm to inches, derived from exact SI/NIST definitions with the standard conversion factor. It's also written 1 mm to in. See nearby values below, or open the full Unit Converter to convert any other value or unit.
Quick answer
1 mm = 0.0394 in
- 1 mm = 0.0394 in
- Exact definitional conversion factor
Frequently asked questions
What is 1 mm in inches?
1 mm is 0.0394 in. The conversion uses the exact factor 1 mm = 0.0394 in.
How do I convert mm to inches?
Multiply by the exact factor (1 mm = 0.0394 in). Open the full Unit Converter to convert any value.
Is 1 mm to in the same as 1 mm to inches?
Yes — 1 mm to in and 1 mm to inches are the same conversion: 1 mm = 0.0394 in.