Size Guide for Urns

What size Urn do I need?

Understanding how much ash is left after the cremation process, can allow you to know what size urn is required. Therefore, we have created this size guide to help you find the correct sized urn for your loved one.  

General info 

The general rule is for every pound of body weight, allow one cubic inch of cremated remains. If you are measuring in Kilograms, the conversion is 1 Kilogram = 2.2 Pounds. 

It is important to note that when choosing a cremation urn, you should concentrate on the volume of the remaining ashes rather than their weight. You can measure volume by using the metrics of Cubic Inches or Litres. 

To learn more about the ashes capacity of a specific Urn, we provide specifications on every product page below our descriptions to guide you through this process. 

Below you will find Ash Volume Tables for adults, children, babies and pets. 

Ash Volume Table - Adults 

The average amount of ash which will remain after the cremation of an adult is between 183 to 213 Cubic Inches, which is about 3 to 3.5 Litres. Our adult urns have the capacity of between 3.0 and 5.1 Litres. 

Weight 

(83kg - 96.61kg) - (183lbs - 213lbs) 

Volume in Litres 

3.0 - 3.5 Litres 

Volume in Cubic Inches 

183 - 213 Cubic Inches 

Volume in Stone 

13 – 15 Stone 

 

Age 

Man 

Man 

Man 

Woman 

Woman 

Woman 

Volume 

Volume 

 

Kg 

Lbs 

St 

Kg 

Lbs 

St 

Litres 

Cu in 

 

 

 

 

 

 

 

 

 

17-19 year 

61 kg 

135 lbs 

9.6 St 

57 kg 

126 lbs 

9 St 

3.00 litres 

183 cu in 

20-25 year 

89 kg 

198 lbs 

14.1 St 

77 kg 

170 lbs 

12.1 St 

3.3 litres 

198 cu in 

25-30 year 

95 kg 

210 lbs 

15 St 

95 Kg  

210 lbs 

15 St 

3.5 litres 

213 cu in 

> 30 year 

138 kg 

305 lbs 

21.7 St 

138 kg 

305 lbs 

21.7 St 

5 litres 

305 cu in 

Ash Volume Table - Children and Babies 

For a child the average amount of ash that will remain after cremation is between 54 to 122 Cubic Inches. This is about 0.8 to 2 Litres. 
 
For a baby the average amount of ashes that will remain after cremation is between 18 to 43 Cubic Inches, which is about 0.3 to 0.7 Litres. (This figure takes into account premature babies). 

If you are on mobile, this might be easier to view in landscape. 

Age 

Boy 

Boy 

Boy 

Girl 

Girl 

Girl 

Volume

Volume 

 

Kg 

Lbs 

St 

Kg 

Lbs 

St 

Litres 

Cu in 

 

 

 

 

 

 

 

 

 

22 weeks 

up to 1 kg 

up to 2 lbs 

 0.14 St 

up to 1 kg 

up to 2 lbs 

 0.14 St 

0.15 litres 

10 cu in 

40 weeks 

up to 8.5 kg 

up to 19 lbs 

 1.3 St 

up to 8.5 kg 

up to 19 lbs 

 1.3 St 

0.65 litres 

40 cu in 

1 year 

10 kg 

22 lbs 

1.5 St 

10 kg 

22 lbs 

1.5 St 

0.80 litres 

49 cu in 

2 year 

12 kg 

26 lbs 

1.8 St 

12 kg 

26 lbs 

1.8 St 

1.00 litres 

61 cu in 

3 year 

15 kg 

33 lbs 

2.3 St 

15 kg 

33 lbs 

2.3 St 

1.25 litres 

76 cu in 

4 year 

17 kg 

37 lbs 

2.6 St 

17 kg 

37 lbs 

2.6 St 

1.35 litres 

82 cu in 

5 year 

19 kg 

42 lbs 

3 St 

18 kg 

40 lbs 

2.8 St 

1.45 litres 

89 cu in 

6 year 

22 kg 

49 lbs 

3.5 St 

21 kg 

46 lbs 

3.2 St 

1.55 litres 

95 cu in 

7 year 

24 kg 

52 lbs 

3.7 St 

24 kg 

52 lbs 

3.7 St 

1.60 litres 

98 cu in 

8 year 

26 kg 

57 lbs 

4 St 

26 kg 

57 lbs 

4 St 

1.65 litres 

101 cu in 

9 year 

28 kg 

62 lbs 

4.4 St 

28 kg 

62 lbs 

4.4 St 

1.75 litres 

107 cu in 

10 year 

31 kg 

68 lbs 

4.8 St 

35 kg 

77 lbs 

5.5 St 

1.85 litres 

113 cu in 

11 year 

35 kg 

77 lbs 

5.5 St 

39 kg 

86 lbs 

6.1 St 

2.00 litres 

122 cu in 

12 year 

39 kg 

86 lbs 

6.1 St 

43 kg 

95 lbs 

6.7 St 

2.25 litres 

137 cu in 

13 year 

45 kg 

99 lbs 

7 St 

48 kg 

106 lbs 

7.5 St 

2.40 litres 

146 cu in 

14 year 

52 kg 

115 lbs 

8.2 St 

52 kg 

115 lbs 

8.2 St 

2.60 litres 

159 cu in 

15 year 

57 kg 

126 lbs 

9 St 

55 kg 

121 lbs 

8.6 St 

2.80 litres 

171 cu in 

16 year 

61 kg 

135 lbs 

9.6 St 

57 kg 

126 lbs 

9 St 

3.00 litres 

183 cu in 



Ash Volumes Table - Pets 

The average amount of ashes remaining after a pet is cremated depends on the size and weight of your pet. Within our chart below we have included pets from 1 Kilogram, going all the way up to 60 Kilograms. 
 

Weight 

Weight 

Weight 

Volume 

Volume 

Kg 

Lbs 

St 

Litres 

Cu in 

 

 

 

 

 

up to 1 kg 

up to 2 lbs 

up to 0.14 St 

0.15 litres 

9 cu in 

up to 8 kg 

up to 17 lbs 

up to 1.2 St 

0.5 litres 

31 cu in 

up to 12 kg 

up to 26 lbs 

up to 1.8 St 

1.0 litres 

61 cu in 

up to 20 kg 

up to 44 lbs 

up to 3.1 St 

1.5 litres 

92 cu in 

up to 40 kg 

up to 88 lbs 

up to 6.2 St 

2.0 litres 

123 cu in 

up to 60 kg 

up to 132 lbs 

up to 9.4 St 

3.0 litres 

183 cu in 

> 60 kg 

> 132 lbs 

> 9.4 St 

4.0 litres + 

244 cu in 


  

If you have any further questions or queries please visit our other articles which are linked below:

Or feel free to contact us and we can help guide you through this difficult time.

Phone Number: 0161 533 0805

Email: contact@urnsforangels.com