Pet Urn Size Calculator
Enter your companion’s weight to estimate ash capacity in cubic inches — the standard rule used by most pet urn makers.
Suggested urn capacity
Estimate only (~1 cu in per lb + buffer). Confirm capacity on the product page.
How pet urn sizing works
Use this free pet urn size calculator before you shop. Enter dog or cat weight in pounds or kilograms to estimate cubic inches of ash capacity — the industry rule of thumb is about 1 cu in per pound, plus an optional buffer.
Urn size FAQ
How much capacity does my pet need?
Multiply body weight in pounds by one cubic inch, then consider ~15% extra. Example: a 45 lb dog often needs about 45–52 cu in.
Dog vs cat urns?
The math is the same; cats usually need smaller vessels. See our cat memorial gifts or dog memorial gifts next.