What size urn?
Obviously the size of the urn required will be based on the size & weight of the pre-cremated body. A good rule of thumb is using a calculation based on: body weight (kg) x 36.44 for the approximate volume in millilitres of cremated ashes.
I have created a chart below which will give an indication of urn size require
Ashes of Size Millilitres Ashes of: Size Millilitres
Human
Premature Baby 65-75 ml
(1.8-2kg)
Cat Small (2.7kg) 100 ml Newborn (3.5kg) 128 ml
Med. (7kg) 250 ml 6 months (4.3kg) 157 ml
Large (12kg) 437 ml 1 year (10kg) 365 ml
Dog Small (2-8kg) 100-300 ml 5 years (18kg) 656 ml
Med. (8-20kg) 300-730 ml 10 years (32kg) 1.2 ltr
Large (20-50kg) 730ml-1.8 ltr 12 years (40kg) 1.86 ltr
X-Large (50-85kg) 1.8-3.0 ltr 14 years (51kg) 1.86 ltr
Ferret 40-165 ltr Adult (56-68kg) 2.1-2.5 ltr
Hamster 1-5 ml Adult + (80kg) 2.9 ltr
Horse Pony (200-400kg) 7-14 ltr Adult Large (120kg) 4.3 ltr
Light (400-600kg) 14-22 ltr Adult X-large (133kg) 4.85 ltr
Med. (500-700kg) 18-5 ltr
Heavy (800-1000kg) 29-36 ltr
Rabbit Small 10-20 ml Note: Please remember that should you be sharing the
Large 30-50 ml ashes of you loved one between you and other family
Snake Small (0.5kg) 18 ml members, smaller urns would suffice.
Large (75kg) 2.7 ltr e.g. The ashes of an 80kg adult requires a 3 ltr urn but if
Tortoise Small 20 ml they are being shared between three people, each urn would
Medium 200-400 ml to be at least 1 ltr
Large 420-500 ml