How Thick Should a Headstone Be? 6" vs 8" Dies Explained
Standard headstone thicknesses for uprights, slants and flat markers — why 6 and 8 inch dies are common, and how thickness affects stability, weight and cost.

Thickness is easy to overlook when choosing a headstone, but it affects stability, weight, appearance and price. Cemeteries sometimes set a minimum.
Typical thicknesses
| Memorial | Common thickness |
|---|---|
| Upright die (single) | 6" |
| Upright die (companion or tall) | 8" |
| Base for upright | 10"–14" deep |
| Slant marker | 10"–12" at the base |
| Bevel marker | 6"–8" |
| Flat marker | 4" |
Why thickness matters
- Stability — a thicker die has a wider footprint on its base and resists tipping.
- Proportion — tall or wide stones look better, and stand better, at 8".
- Weight — granite weighs roughly 165–175 lb per cubic foot, so 2 extra inches adds a lot. See how much a headstone weighs.
- Cost — more stone, more freight.
Rules of thumb
- Up to about 30" tall: 6" is standard.
- Wider than about 36" or taller than 30": consider 8".
- The base should be at least 4" deeper than the die — commonly 12" for a 6" die.
Flat markers
4" thickness lets a flat marker sit securely flush with the lawn and resist cracking under mowers.
Key Takeaways
- 6" dies are standard for single uprights; 8" for larger companions.
- Thicker stones are more stable but heavier and costlier.
- Bases should be several inches deeper than the die.
Next Step
See full headstone sizes and dimensions, or pick a size in the Design Studio.
Frequently Asked Questions
How thick is a standard headstone?
Most single upright headstones are 6 inches thick; larger companion stones are often 8 inches.
How thick are flat grave markers?
Usually about 4 inches.
Is a thicker headstone better?
Thicker stones are more stable, especially when tall or wide, but they weigh and cost more. Match thickness to size.
Ready to get pricing for your granite monument?
Request pricing, factory specifications, and DAP delivery timelines from our team.
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