Inch ↔ Mm Converter
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Overview
A precise, user-friendly unit converter built specifically for engineers, machinists, makers, and students who work across metric and imperial systems.
Easily convert between inches and millimeters with up to 6 decimal places of precision.
Supports fractional input like 1/8, 1 1/4, and displays exact simplified fractional equivalents (e.g., 1 3/8") when applicable.
Developed by a mechanical engineer using ChatGPT as a collaborative coding assistant — combining real-world engineering needs with fast, intelligent development.
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Privacy Practices
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Not being sold to third parties, outside of the approved use cases
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Not being used or transferred for purposes that are unrelated to the item's core functionality
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Not being used or transferred to determine creditworthiness or for lending purposes
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