Student Academic Learning Services
Page 1 of 2
Unit Conversion Review
Mixed Imperial to Metric
Convert the following:
a) 8 pounds 9 ounces b) 9 feet 5¾ inches
to kilograms
to metres
c) 12 stone 5 pounds
to kilograms
Step 1: Convert the first
imperial unit to metric
Relation: 1 kg = 2.2 lb
Relation: 1 st. = 6.35 kg
8 𝑙𝑏 ×
Step 3: Add them together
www.durhamcollege.ca/sals
9 𝑓𝑡 ×
1𝑚
3.28 𝑓𝑡
6.35 𝑘𝑔
1 𝑠𝑡.
= 12 × 6.35 𝑘𝑔
= 76.2 𝑘𝑔
12 𝑠𝑡.×
8
𝑘𝑔
2.2
= 3.63 𝑘𝑔
=
Relation: 1 kg = 35.3 oz
Relation: 1 m = 39.35 in
1 𝑘𝑔
9 𝑜𝑧 ×
35.3 𝑜𝑧
9
=
𝑘𝑔
35.3
= 0.255 𝑘𝑔
5 ¾ in = 5.75 in
=
3.63 𝑘𝑔 + 0.255 𝑘𝑔
= 3.89 𝑘𝑔
2.74 𝑚 + 0.146 𝑚
= 2.886 𝑚
=
Step 2: Convert the second
imperial unit to metric
1 𝑘𝑔
2.2 𝑙𝑏
Relation: 1 m = 3.28 ft
9
𝑚
3.28
= 2.74 𝑚
5.75 𝑖𝑛 ×
1𝑚
39.35 𝑖𝑛
5.75
𝑚
39.35
= 0.146 𝑚
Relation: 1 kg = 2.2 lb
5 𝑙𝑏 ×
1 𝑘𝑔
2.2 𝑙𝑏
5
𝑘𝑔
2.2
= 2.27 𝑘𝑔
=
76.2 𝑘𝑔 + 2.27𝑘𝑔
= 78.47 𝑘𝑔
Student Services Building (SSB), Room 204
905.721.2000 ext. 2491
This document last updated: 7/27/2011
Student Academic Learning Services
Page 2 of 2
Metric to Mixed Imperial
Convert the following:
Step 1: Convert original to
large imperial unit as a
decimal
Step 2: Convert decimal
portion to small imperial unit
Step 3: Round decimal portion
from step 2 to a fraction if
necessary
a) 1.25 m to feet
and inches
1.25 𝑚 ×
= 4.1 𝑓𝑡
0.1 𝑓𝑡 ×
= 1.2 𝑖𝑛
3.28 𝑓𝑡
1𝑚
12 𝑖𝑛
1 𝑓𝑡
No fraction necessary.
Just round to nearest
inch:
1.2 𝑖𝑛 ≈ 1 𝑖𝑛
Step 4: Combine to make the
final answer.
www.durhamcollege.ca/sals
1.25 m = 4 ft 1 in
b) 3.8 kg to pounds
and ounces
2.2 𝑙𝑏
1 𝑘𝑔
= 8.36 𝑙𝑏
3.8 𝑘𝑔 ×
0.36 𝑙𝑏 ×
= 5.76 𝑜𝑧
1 𝑓𝑡
30.48 𝑐𝑚
0.38 𝑓𝑡 ×
12 𝑖𝑛
1 𝑓𝑡
= 4.56 𝑖𝑛
No fraction necessary.
Round to nearest ounce:
3.8 kg = 8 lb 6 in
225 𝑐𝑚 ×
= 7.38 𝑓𝑡
16 𝑜𝑧
1 𝑙𝑏
5.76 𝑖𝑛 ≈ 6 𝑖𝑛
c) 225 cm to feet and
inches rounded to
nearest 8th of an inch
8
0.56 𝑖𝑛 ×
8
4.48
=
𝑖𝑛
8
4
≈ 𝑖𝑛
8
225 𝑐𝑚 = 7 𝑓𝑡 4 4�8 𝑖𝑛
Student Services Building (SSB), Room 204
905.721.2000 ext. 2491
This document last updated: 7/27/2011