The bandsaw blade length calculator gives you the exact blade length needed based on your saw's wheel diameter and wheel center-to-center distance. Use this when replacing a blade or buying a bandsaw to confirm compatible blade sizes.
Bandsaw Blade Length Calculator
Both wheels should be same diameter
Axle center to axle center with blade tensioned
Common Bandsaw Blade Sizes
| Saw Size | Common Length | Metric | Example Saws |
|---|---|---|---|
| 9" | 59-1/2" – 62" | 1,511–1,575mm | WEN, SKIL small saws |
| 12" | 80" – 82" | 2,032–2,083mm | Delta 28-150, WEN 3962 |
| 14" | 93-1/2" | 2,375mm | Jet JWBS-14, Delta 28-280 |
| 16–18" | 105" – 131" | 2,667–3,327mm | Grizzly G0555, larger floor saws |
How to Measure Bandsaw Blade Length
This bandsaw blade length calculator uses the geometric formula for two equal wheels connected by a belt. The result tells you exactly what blade to order when replacing a worn or broken blade.
Measure Center Distance Correctly
The center-to-center distance should be measured with a blade installed and tensioned at normal operating tension. Tensioning raises the upper wheel slightly — if you measure without tension, the calculated blade will be slightly short. Most 14\" benchtop saws have 13–14\" center distance.
Rounding and Blade Sizes
Bandsaw blades are sold in standard increments — usually 1/2\" or 1\" intervals. Round your calculated length up to the next available size. A blade 1–2\" longer than calculated is usually fine; the upper wheel's tensioning mechanism accommodates small variations.
FAQ
Is this bandsaw blade length calculator free?
Yes, completely free. All calculations run locally in your browser.
How do I calculate bandsaw blade length?
Blade length = (π × wheel diameter) + (2 × wheel center distance). For a 14" bandsaw with 13.5" center-to-center distance: (3.1416 × 14) + (2 × 13.5) = 43.98 + 27 = 70.98". Round up to nearest 1/2" or 1" increment — 71" or 72" blade.
What is the most common bandsaw blade length?
The 93-1/2" blade is the most common, fitting many 14" benchtop bandsaws (Jet, Delta, Grizzly, WEN). Other common sizes: 56" (9" saws), 80" (12" saws), 105" (16" saws), 131" (18" saws). Always measure your specific saw before ordering.
What width bandsaw blade should I use?
Blade width depends on the minimum curve radius you need: 1/4" blade cuts 1" radius curves; 1/2" blade cuts 3" radius; 3/4" blade for straight or gentle curves only. For resawing, use the widest blade your saw accepts (typically 1/2" to 3/4"). Wider blades track straighter and resist drift.
How tight should a bandsaw blade be tensioned?
Most manufacturers recommend tensioning until the blade deflects about 1/4" when pushed sideways with your thumb in the middle of the unsupported span. Over-tensioning fatigues the blade and stresses the saw frame. Under-tensioning causes blade drift and poor cuts.