BeltMatch: V-Belt Finder
Pulley to catalog belt size
Only for iPhone
$9.99 · Designed for iPhone. Not verified for macOS.
iPhone
Turn pulley sizes into catalog belt candidates, and know exactly how far to move the motor. Works offline. One-time purchase.
Stop guessing which V-belt to order. BeltMatch turns pulley dimensions — or a worn belt you can still measure — into a shortlist of catalog belt sizes, and tells you exactly how far to move the motor to fit each one.
FROM PULLEY SIZES TO A BELT YOU CAN ORDER
- Enter both pulley reference diameters and the centre distance
- BeltMatch uses the exact open-belt tangent geometry, not the rough approximation
- See the required belt length, speed ratio and wrap angles
- Get the nearest catalog sizes ranked by how little you have to move the shaft
KNOW HOW FAR TO MOVE THE MOTOR
- Every candidate shows the real centre distance for that exact belt
- "+6.2 mm wider" or "-4.8 mm closer" — no trial and error at the machine
- Belts that cannot physically fit are never suggested
IDENTIFY A BELT YOU ALREADY HAVE
- Search by the marking printed on the belt — SPA1250, spa 1250 and SPA-1250 all find the same thing
- Worn off? Measure the top width and inside length instead and search by size
- Clear guidance on how to measure so your numbers mean something
GET THE LENGTH BASIS RIGHT
- Inside, outside, datum and effective length are not the same number
- BeltMatch only ever compares like with like, and always tells you which basis it used
- This is the single most common reason people order the wrong belt
KEEP A RECORD PER MACHINE
- Save each machine with a photo, model and location
- Log which belt went on, when, and how many
- Next replacement takes seconds instead of another trip with the calipers
CATALOG COVERAGE
- Covers ISO/DIN sections: classical Z, A, B, C and narrow SPZ, SPA, SPB, SPC
- Sizes are from published Optibelt catalog data
- North American sections (3V/5V/8V, 3L/4L/5L) are not included yet
BUILT FOR THE FIELD
- Works completely offline — no account, no ads, no subscription
- One-time purchase. Nothing leaves your phone
- V-belts only. Timing, flat and serpentine belts are not covered
BeltMatch shows reference candidates from published catalog data. It does not guarantee fit, stock or load rating. Always confirm against the machine maker's specification, and stop and isolate the machine before measuring.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Yoshiaki Hirokawa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yoshiaki Hirokawa
- Size
- 3.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 netflowers
