Use this free online Bandsaw Blade TPI Calculator for Variable Pitch Bi-metal blades, to quickly determine an appropriate starting tooth pitch (TPI) for metal cutting bandsaw blades. Simply select the material type and enter the material size or wall thickness to receive an approximate variable-pitch blade recommendation based on standard industrial blade selection guidelines
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Recommended blade tooth pitch
Enter a measurement
The calculator will recommend an approximate starting TPI once a valid size is entered.
This calculator provides an approximate starting point only. Final blade selection can depend on material grade, machine condition, work holding, cutting speed, coolant, bundle cutting and operator preference.
© 2026 United Products Ltd. All rights reserved. The United Products NZ Bandsaw Blade TPI Calculator is proprietary software developed for unitedproducts.co.nz.
The United Products Bandsaw Blade TPI Calculator is a free online tool that recommends an appropriate starting tooth pitch (TPI) for metal cutting bandsaw blades. Simply select the material type and enter the material size or wall thickness to receive an approximate variable-pitch blade recommendation based on standard industrial blade selection guidelines.
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The United Products Bandsaw Blade TPI Calculator recommends an appropriate starting tooth pitch (TPI) for metal cutting bandsaw blades based on the size and shape of the material being cut. Simply select the material type, enter the material size or wall thickness, and the calculator will recommend a suitable variable pitch blade as a starting point.
The calculator follows standard industrial bandsaw blade selection guidelines and provides an approximate starting recommendation. Final blade selection can also depend on material grade, machine condition, cutting speed, coolant, bundle cutting, workholding and operator preference. If you are unsure, contact United Products for advice.
Variable pitch bandsaw blades are recommended for most industrial metal cutting applications because they reduce vibration, produce smoother cuts, minimise tooth stripping and perform well across a wider range of material sizes than straight pitch blades. This makes them the preferred choice for most workshops.
Yes. The calculator can be used as a starting point when cutting stainless steel, mild steel, tool steel, alloy steels, aluminium and many other metals. Material type, hardness and cutting conditions should always be considered when selecting the final blade.
For solid round bar, enter the outside diameter.
For solid square or rectangular bar, enter the material width.
For pipe, tube and structural sections, enter the wall thickness rather than the outside size. Tooth pitch selection is based on the thickness of material being cut, not the overall size of hollow sections.
The 3 Tooth Rule is a widely accepted guideline for selecting bandsaw blade tooth pitch. Ideally, at least three teeth should be engaged in the material throughout the cut. Too few teeth can strip or damage the blade, while too many teeth reduce chip clearance and cutting efficiency. This calculator follows that principle when making recommendations.
Simply enter the actual material size. The calculator automatically matches your measurement with the appropriate tooth pitch recommendation. There is no need to round your measurement up or down.
No. The calculator is designed to provide a fast and convenient starting point. For specialist applications such as bundle cutting, large structural sections, difficult alloys or production cutting, blade selection may differ. For the best results, refer to our Bandsaw Blade TPI Chart, Bandsaw Blade Guides, or contact United Products for assistance.
Straight pitch bandsaw blades are still available for certain specialist applications, but modern variable pitch bi-metal blades provide better overall performance for most metal cutting work. They cut more smoothly, reduce vibration and are suitable for a much wider range of material sizes, which is why the calculator recommends variable pitch blades as the preferred starting point.
