Conversions
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



This page hosted by Get your own Free Home Page

1