US and Metric Weights and Measures ComparedLengthinches to millimeters (mm)

1 inch = 25.4 millimeter = 2.54 centimeter1 millimeter = 0.04 inch1 centimeter = 10 millimeter

inches to centimeters (cm)

1 inch = 2.54 cm1 cm = 0.39 inch12 inches = 1 foot = 30.48 centimeter

inches and feet to meters and centimeters

100 centimeters = 1 meter = 39.37 inches = 3.281 feet

feet to meters (m)

1 foot = 0.3048 meters = 30.48 centimeter1 meter = 3.281 feet

yards to meters (m)

1 yard = 0.9144 meter1 meter = 1.093 yard1 yard = 3 feet = 36 inches

miles to kilometers (km)

1 mile = 1.60934 kilometer1 kilometer = 0.62137 miles1 kilometer = 1000 meters1 mile = 5280 feet = 1760 yards

2inches=1foot, 3feet=1yard, 1760yards=1mile10mm=1cm, 100cm=1m, 1000m=1km1 in = 2.54 cm, 1 ft=30.48cm, 1 mile = 1.609344 km1 mm=0.04 inch, 1 cm=0.3937 inch, 1 km=0.62 mileProblem:

A yardstick is 36 inches. What isthis length in centimeters?

Solution:

There are 2.54 centimeters in one inch.Set up the conversion so the desired unit will be cancelled out. In this case, we want cm to tbe the remaining unit.

length in cm = (length in inches) x (2.54 cm/1 in)length in cm = (36 x 2.54) cmlength in cm = 91.44 cm

Answer:

A yardstick is 91.44 cm. long.Conversion table inches to cmbyLTH0MKY8224EIMYon13 JUNI, 2013LEAVE A COMMENTInchescm

12.54

25.08

37.62

410.16

512.70

615.24

717.78

820.32

922.86

1025.40

1127.94

1230.48

1333.02

1435.56

1538.10

1640.64

1743.18

1845.72

1948.26

2050.80

2153.34

2255.88

2358.42

2460.96

2563.50

2666.04

2768.58

2871.12

2973.66

3076.20

3178.74

3281.28

3383.82

3486.36

3588.90

CmInches

10.39

20.79

31.18

41.57

51.97

62.36

72.76

83.15

93.54

103.94

114.33

124.72

135.12

145.51

155.91

166.30

176.69

187.09

197.48

207.87

218.27

228.66

239.06

249.45

259.84

3011.81

3513.78

4015.75

4517.72

5019.69

5521.65

6023.62

6525.59

7027.56

7529.53

One-Step Dimensional Analysis Problems How do you set-up a dimensional analysis problem? Example: If 1 inch is the same as 2.54 cm, how many inches are equal to 4.5 cm? Step 1: Identify the given value and write it down. 4.5 cm Step 2: Determine which unit you want the answer expressed in. 4.5 cm x =? inches Step 3: Choose your conversion factor. Your conversion factor should get you from the units you start with to the units you want to end with. The units you started with should go on the bottom ofthe conversion factor. The units you want to end with should go at the top of your conversion factor. 1 inch 4.5 cm x ?rnches 2.54 cm Step 4: Do the math by either multiplying or dividing, depending on the problem. 1 inch 4.5 cm x = 1.77 2.54 cm Step 5: Cancel units where possible and write the remaining unit behind your answer. / linch x = 1.77 inches / k Here are some conversion factors that you are expected to know: 1000 milliliter 1 Liter; 1000 millimeters = 1 meter 100 centimeters = 1 meter 1000 meters 1 kilometer: 1000 grams I kilogramB. Length:Lets try a conversion of an English length to the corresponding Metric value. Convert 7.60 feet to meters.The sequence of conversions would be:12 in2.54 cm1 m

7.60 ft xxx

1 ft1 in102cm

The units now cancel out to give only the desired unit of meters.12in2.54cm1 m

7.60ftxxx

1ft1in102cm

Multiply the numbers, and then convert the answer to the appropriate number of significant figures. Since there arethree significant figures in the starting value, and all three of the conversion factors are identities, i.e., they are not involved in rounding off,the final answer must have three significant figures.2.31648 m 2.31 m