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Thread Pitch Calculator
Convert Threads Per Inch (TPI) to thread pitch in inches and millimeters
Thread Pitch Standard: Thread pitch is calculated as $1 \div \text{TPI}$ (Threads Per Inch). Metric conversion multiplies inch pitch by $25.4\text{ mm}$.
Thread Specification Input
Calculation Results
⚠️ Always verify thread pitch using a thread pitch gauge or optical comparator when identifying unknown fasteners or threading replacement parts.