← Back to all tools
Machining / Threads
Thread Pitch / TPI Converter
Convert between metric thread pitch and threads per inch, with reciprocal values in both unit systems.
Known thread value
Converted thread pitch
Threads per inch16.933 TPI
Reciprocal pitch conversion
- Metric pitch
- 1.5 mm
- Threads per inch
- 16.933 TPI
- Threads per millimetre
- 0.66667 threads/mm
- Pitch in inches
- 0.059055 in
Pitch and TPI describe spacing only. They do not identify nominal diameter, thread form, tolerance class or whether two parts are compatible.