Thread pitch gauge

Contains ads
12.8K reviews
Content rating
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About this app

Thread Pitch gauge is in the 1st set of the Smart Tools collection.

How did you determine thread pitch of screws? With a paper or a ruler? From now on, you can measure them with this app.

Usage is simple. Open the app and measure thread on your screen.
Is it accurate? Don't worry. The width of your screen was already calibrated.

* Supported thread list:
- Metric thread sizes
- US thread sizes
- NPT (National Pipe Tapered thread)
- BSPT (British Standard Pipe Taper)
- Metric Screw sizes
- SAE Screw sizes

* Main features:
- Caliper mode
- Meter <-> Inch
- Background color
- Material design

* Do you want more tools?
download [Smart Ruler Pro] and [Smart Tools] package.

For more information, watch YouTube and visit the blog. Thank you.
Updated on
Nov 15, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

12K reviews
Junta Janardhan
May 19, 2023
Thread pitch gauge is a great reference for all those with an engineering bent of mind. It's easy to use, and the automatic screen calibration definitely helps. The app is updated regularly, which is something you don't see often with apps of this type. Overall, definitely a handy app you want to have around in your phone or app library.
4 people found this review helpful
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A Google user
December 31, 2019
Downloaded to quickly identify a small component with very fine threading. Unfortunately the app did not seem to contain this size in the visual profiles, but I was able to use the on screen ruler to more accurately measure the thread spacing. Harbor Freight cheapo digital calipers confirm ruler is plenty close enough without any calibration on Moto E4, just downloaded and opened. Removed for space, but will remember this app for future projects.
22 people found this review helpful
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paul fox
December 4, 2020
I find myself using this app all the time, to check the pitch on an oddball screw. I rarely use the ruler, because I can estimate pretty well, but it's been useful to have. My only wish is that it had a way (advanced/difficult would be okay) of requesting that _all_ thread pitches be shown. If you deal with antique machines made before thread standardization, you'll know that it's not uncommon to find something like 30tpi. One of my antique sewing machines actually has a screw with 23 threads per inch. (Really!) I think there may be a Pro (paid) version of the app -- I'd definitely pay if it had all the thread pitches. Other than that, the app is great.
26 people found this review helpful
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Smart Tools co.
March 3, 2021
Thanks for the suggestion. I'll find a way to select all tpi from 7 to 40.

What's new

- v1.4.12 : More models are calibrated
- v1.4.10 : Support for Android 13