Β
Β
Audiophiles obsess over VTA (Vertical Tracking Angle), which is how the stylus sits in the groove. One practical headache we often encounter: cartridge heights vary. When you swap a tall cartridge for a short one, and your tonearm angle changes unless you adjust arm height or add a spacer/shim.
This calculator is for people swapping phono cartridges and trying to answer a very common setup question: how much spacer or shim thickness do I need to maintain a sensible tonearm height relationship? Instead of guessing, stacking hardware at random, or remeasuring the same setup several times, this page helps you estimate cartridge height differences and translate them into a more usable shim decision.
Most readers want to know, βWhat does this actually tell me?β The short answer is that it helps you compare cartridge heights, estimate the effect of a change, and use the built-in reference list as a shortcut when published dimensions are available. That makes it useful both for planned cartridge swaps and for troubleshooting a setup that suddenly looks tail-up or tail-down after a change.
See one of my related pages for 3D Printed Phono Cartridge Shims/Headshell Spacers if you need a cartridge headshell spacer.
Quick idea: treat the βcartridge heightβ as stylus tip β mounting surface. If your current setup is level and you swap to a cartridge thatβs Ξ mm taller, you generally need to raise the tonearm pivot by Ξ mm (or use an equivalent base spacer). If the new cartridge is Ξ mm shorter, you generally need to lower the pivot by Ξ mm or add a headshell/cart shim of Ξ mm.
Calculator
Select two cartridges (or enter heights) and the result will update automatically.
Add a custom cartridge
Cartridge height reference
This is the built-in cartridge list used by the dropdowns. Some entries also include supplemental specs (type, stylus, tracking force, weight, mount). Filter to find a model and see the default height used for calculations.
| Manufacturer | Model | Height (mm) | Links |
|---|
Database stats (built-in list)
About this VTA shim calculator and cartridge database
Vertical Tracking Angle (VTA) is the angle your stylus βseesβ as it rides the groove. In plain English: when you change cartridges, swap mats, change headshells, or move to a very different record thickness, the arm can tilt up or down and the stylus may no longer sit at the same working angle it did before. This calculator is meant to solve the practical part of that problemβgetting you back to a sensible starting pointβby estimating how much spacer (shim) thickness you might need when moving between cartridges of different heights.
Β
The key input is cartridge height, typically measured from the stylus tip to the top mounting surface. Because manufacturers donβt all publish this the same way (and some donβt publish it at all), the database blends official dimension charts with reputable published specs and clearly labeled reference links. Think of it as a βbest availableβ library, not a metrology lab: the goal is consistency and a quick baseline, not a guarantee down to the last tenth of a millimeter.
What the database does (and does not do)
This page includes a built-in cartridge list with height values and, when available, additional specs like cartridge type (MM/MC/MI), stylus profile, tracking force guidance, and mounting/weight notes. Those extra specs donβt change the shim math directly, but theyβre useful context when youβre deciding whether a swap is a βdrop-inβ change or a bigger setup project. For example, a tall cartridge with a narrow tracking-force range may reward a slower, more careful alignment session than a forgiving elliptical with a wider range.
Β
What the database doesnβt do: it canβt know your exact arm geometry, VTA tower calibration, mat compressibility, record thickness, or how your particular cartridge body is toleranced. If you want the last word, measure your current setup (arm level, cartridge height with calipers, and/or stylus rake angle) and treat the calculator as a guide for the first mechanical adjustment. After that, you can fine-tune by ear or with a test record and microscope-style checks.
A practical workflow is: pick your current cartridge, pick the new one, apply the suggested shim/spacer change, then re-check tracking force and alignment. If the change is large, re-check tonearm height limits and fastener engagement (longer bolts may be needed). If the change is small, youβll often land close enough that the βfinalβ adjustment is just a tiny arm-height tweak or a thin shim.
Β
Tip: if you find an authoritative height for a cartridge not listed here, use the βAdd a custom cartridgeβ option and save it locally in your browser. Your additions can coexist with the built-in database.
Browse all included cartridges (searchable table)
| Brand | Model | Height (mm) | Type | Stylus | Tracking Force | Links |
|---|
Heights are shown as published/compiled reference values. Always verify fit, bolts, and alignment after changes.
Notes & reality checks
This tool is intentionally practical (not mystical): itβs mainly about keeping the arm roughly level after a cartridge swap.
- Heights arenβt universal. βCartridge heightβ is usually measured from stylus tip to top mounting surface, but sources vary. If in doubt, measure with calipers.
- Shims vs arm height. Some arms have a VTA tower; others use base spacers under the arm; others are effectively fixed. Use the suggestion that matches your hardware.
- Other changes matter. Changing platter mats, record thickness, headshells, and even fasteners can shift things. Consider this a starting point.
- Fine tuning. After you get level, listen and/or confirm with a known test record. Stylus shapes (microline/shibata/etc.) can be more VTA-sensitive.
Data sources & reference links (click to expand)
Starter heights/ranges are pulled from manufacturer/spec pages where available. If a value is missing, enter it manually and you can save it locally.