|
Metric Conversion Factors
|
|
Inches
|
-
|
Millimetres
|
|
0·039
|
1
|
24·400
|
|
0·079
|
2
|
50·800
|
|
0·118
|
3
|
76·200
|
|
0·157
|
4
|
101·600
|
|
0·197
|
5
|
127·000
|
|
0·236
|
6
|
152·400
|
|
0·276
|
7
|
177·800
|
|
0·315
|
8
|
203·200
|
|
0·354
|
9
|
228·600
|
|
0·354
|
10
|
254·000
|
|
|
Sq· feet
|
-
|
Sq· metres
|
|
10·764
|
1
|
0·093
|
|
21·528
|
2
|
0·186
|
|
32·292
|
3
|
0·279
|
|
43·056
|
4
|
0·372
|
|
53·820
|
5
|
0·465
|
|
64·583
|
6
|
0·557
|
|
75·347
|
7
|
0·650
|
|
86·111
|
8
|
0·743
|
|
96·875
|
9
|
0·836
|
|
107·640
|
10
|
0·930
|
|
|
Feet
|
-
|
Metres
|
|
3·281
|
1
|
0·305
|
|
6·562
|
2
|
0·610
|
|
9·843
|
3
|
0·914
|
|
13·123
|
4
|
1·219
|
|
16·404
|
5
|
1·524
|
|
19·685
|
6
|
1·829
|
|
22·966
|
7
|
2·134
|
|
26·247
|
8
|
2·438
|
|
29·528
|
9
|
2·743
|
|
32·281
|
10
|
3·050
|
|
|
Pounds
|
-
|
Kilograms
|
|
0·551
|
¼
|
0·113
|
|
1·102
|
½
|
0·227
|
|
2·205
|
1
|
0·454
|
|
4·409
|
2
|
0·907
|
|
6·614
|
3
|
1·361
|
|
8·818
|
4
|
1·814
|
|
11·023
|
5
|
2·268
|
|
13·228
|
6
|
2·722
|
|
15·432
|
7
|
3·175
|
|
17·637
|
8
|
3·329
|
|
19·842
|
9
|
4·082
|
|
22·046
|
10
|
4·536
|
|
|
Miles
|
-
|
Kilometres
|
|
0·621
|
1
|
1·609
|
|
1·243
|
2
|
3·219
|
|
1·864
|
3
|
4·828
|
|
2·485
|
4
|
6·437
|
|
3·107
|
5
|
8·047
|
|
3·728
|
6
|
9·656
|
|
4·350
|
7
|
11·265
|
|
4·971
|
8
|
12·875
|
|
5·593
|
9
|
14·484
|
|
6·214
|
10
|
16·093
|
|
|
Acres
|
-
|
Hectares
|
|
2·471
|
1
|
0·405
|
|
4·492
|
2
|
0·809
|
|
7·413
|
3
|
1·214
|
|
9·884
|
4
|
1·619
|
|
12·355
|
5
|
2·023
|
|
14·826
|
6
|
2·428
|
|
17·297
|
7
|
2·833
|
|
19·769
|
8
|
3·237
|
|
22·240
|
9
|
3·642
|
|
24·711
|
10
|
4·047
|
|
|
Tons
|
-
|
Tonnes
|
|
0·984
|
1
|
1·016
|
|
1·968
|
2
|
2·032
|
|
2·953
|
3
|
3·048
|
|
3·937
|
4
|
4·064
|
|
4·921
|
5
|
5·080
|
|
5·905
|
6
|
6·096
|
|
6·889
|
7
|
7·112
|
|
7·874
|
8
|
8·128
|
|
8·858
|
9
|
9·144
|
|
9·842
|
10
|
10·161
|
|
|
mph
|
-
|
km/h
|
|
10
|
-
|
16
|
|
20
|
-
|
32
|
|
30
|
-
|
48
|
|
40
|
-
|
64
|
|
50
|
-
|
80
|
|
60
|
-
|
96
|
|
70
|
-
|
112
|
|
80
|
-
|
128
|
|
90
|
-
|
144
|
|
100
|
-
|
160
|
|
Conversion Formulae
|
|
To Convert
|
Multiply By
|
| Inches to C'metres
|
2·5400
|
| C'metres to Inches
|
0·3937
|
| Feet to Metres
|
0·3048
|
| Metres to Feet
|
3·2810
|
| Yards to Metres
|
0·9144
|
| Metres to Yards
|
1·0940
|
| Miles to K'metres
|
1·6090
|
| K'metres to Miles
|
0·6214
|
| Sq Ins to Sq C'ms
|
6·4520
|
| Sq C'ms to Sq Ins
|
0·1550
|
| Sq Mtrs to Sq Feet
|
10·7600
|
| Sq Feet to Sq Mtrs
|
0·0929
|
| Sq Yards to Sq Mtrs
|
0·8361
|
| Sq Mtrs to Sq Yards
|
1·1960
|
| Sq Miles to Sq K'mtrs
|
2·5900
|
| Sq K'mtrs to Sq Miles
|
0·3861
|
| Acres to Hectares
|
0·4047
|
| Hectares to Acres
|
2·4710
|
| Cu Ins to Cu C'ms
|
16·3900
|
|
| To Convert
|
Multiply By
|
| Cu C'mtres to Cu Ins
|
0·0610
|
| Cu Feet to Cu C'mtres
|
0·0283
|
| Cu Mtres to Cu Feet
|
35·3100
|
| Cu Yards to Cu Mtres
|
0·7646
|
| Cu Mtres to Cu Yards
|
1·3080
|
| Cu Ins to Litres
|
0·0163
|
| Litres to Cu Ins
|
61·0300
|
| Gallons to Litres
|
4·5460
|
| Litres to Gallons
|
0·2200
|
| Grains to Grams
|
0·0648
|
| Grams to Grains
|
15·4300
|
| Ounces to Grains
|
28·3500
|
| Grains to Ounces
|
0·0353
|
| Pounds to Grams
|
453·6000
|
| Grams to Pounds
|
0·0022
|
| Pounds to K'grams
|
0·4536
|
| K'grams to Pounds
|
2·2050
|
| Tons to K'grams
|
1016·0000
|
| K'grams to Tons
|
0·0009
|
|
Temperature Conversion
|
| Formula for °F to °C°C = (°F - 32) x 5 ÷ 9
|
Formula for °C to °F°F = (°C x 9 ÷ 5) + 32
|
If you want a quick calculation for an approximate conversion in your head: -°C = (°F - 30) ÷ 2 or °F = °C x 2 + 30 Fact: -40°C = -40°F
|
°C
|
-
|
°F
|
|
0
|
-
|
32
|
|
5
|
-
|
40
|
|
10
|
-
|
50
|
|
15
|
-
|
60
|
|
20
|
-
|
70
|
|
25
|
-
|
77
|
|
30
|
-
|
85
|
|
35
|
-
|
95
|
|
40
|
-
|
105
|
|
50
|
-
|
122
|
|
60
|
-
|
140
|
|
70
|
-
|
157
|
|
80
|
-
|
175
|
|
90
|
-
|
103
|
|
100
|
-
|
212
|
|
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