Unit Conversion

Unit Conversion for civil Engineering

In this article we will discuss different unit conversion for civil engineering. These units is very useful and widely use in engineering. Different unit conversion for civil engineering is given below:

Length:

Length
S.No	mm	cm	inch	Foot	Yard	Meter	km	Mile
1	1	0.1	0.0393	0.003281	0.001094	0.001	0.000001	6.21e-7
2	10	1	0.393	0.032808	0.01093	0.01	0.00001	0.000006
3	1000	100	39.37	3.2808	1.09361	1	0.001	0.000621
4	1000000	100000	39370.08	3280.84	1093.6	1000	1	0.62137
5	25.4	2.54	1	0.08333	0.02777	0.0254	0.000025	0.000016
6	304.8	30.48	12	1	0.33333	0.3048	0.000305	0.000189
7	914.4	91.44	36	3	1	0.9144	0.000914	0.000568
8	1609344	160934.4	63360	5280	1760	1609.344	1.609344	1

Example of Length Conversion:

To convert the length units let’s take an example of length “inch into millimeter (mm)”

Convert 10 inch into millimeter

We know that from the table of length conversion

1 inch = 25.4 mm

To find the 10 inch simply multiply the 10 with 25.4

10 inch 25.4 × 10

10 inch = 254 mm

Area:

S.No	mm2	cm2	in2	ft2	yd2	m2
1	1	0.01	0.00155	0.000011	0.000001	0.000001
2	100	1	0.155	0.00107	0.00012	0.0001
3	645.16	1000	1550.003	10.7639	1.1959	1
4	645.16	6.4516	1	0.00694	0.00077	0.000645
5	92903	929.03	144	1	0.111111	0.0929
6	836127	8361.27	1296	9	1	0.83612

Example of Area Conversion:

To convert the Area units let’s take an example of Area “square inch into square millimeter (mm²)”

Convert 10 inch into square millimeter

We know that from the table of Area conversion

1 square inch = 645.16 square millimeter

To find the 10 inch simply multiply the 10 with 645.16

10 square inch = 645.16 × 10

10 square inch = 6451.6 mm²

Mass:

 

S.No	Grams	Kilogram	Metric Ton	Pound	Ounces
1	1	0.001	0.000001	0.002205	0.03527
2	1000	1	0.001	2.2045	35.273
3	1000000	1000	1	2204.5	35273.37
4	907200	907.2	0.9072	2000	32000
5	1016000	1016	1.016	2239.85	35837.7
6	453.6	0.4536	0.000454	1	16
7	28	0.02835	0.000028	0.0625	1

Example of Mass Conversion:

To convert the Mass units let’s take an example of Mass “kilogram into pound (lb)”

Convert 20 kilogram into pound

We know that from the table of mass conversion

1 kilogram = 2.204 pound

To find the 20 kilogram simply multiply the 20 with 2.204

20 kilograms = 2.204 × 20

20 kilograms = 44.08 lb

Volume:

S.No	Cm3	m3	Liter	in3	ft3	US Gallon	UK Gallon
1	1	0.000001	0.001	0.06102	0.000035	0.000264	0.00022
2	1000000	1	1000	61024	35	264	220
3	1000	0.001	1	61	0.035	0.2642	0.22
4	16.4	0.000016	0.01638	1	0.000579	0.004329	0.003605
5	28317	0.02831	28.316	1728	1	7.481333	6.22971
6	3785	0.003785	3.79	231	0.13	1	0.8327
7	4545	0.004545	4.55	277	0.16	1.2	1
8	158970	0.15897	159	9701	6	42	35

 

S.No	Volume
1	1 teaspoon	5 milliliters
2	1 fluid ounces	30 milliliter
3	1 tablespoon	15 milliliters
4	1 liter	1000 cubic centimeters
5	1 fluid ounce	30 milliliters
6	1 quartz	0.9463 liter
7	1 cup	0.23658 liters
8	1 pint	0.473167 liters

Example of Volume Conversion:

To convert the volume units let’s take an example of volume “Liter into cubic meter (m³)”

Convert 5 liter into cubic meter (m³)

We know that from the table of volume conversion

1liter = 0.001 cubic meter (m³)

To find the 10 liter simply multiply the 10 with 0.001

10 liters = 0.001 × 10

10 liters = 0.01 cubic meter

Note:

Cm³ means cubic centimeter

m³ means cubic meter

in³ means cubic inch

ft³ means cubic foot

UK Gallon is also called imperial Gallon

 

Speed:

S.No	m/s	m/min	km/h	ft/s	ft/min	Mile/h
1	1	59.988	3.5997	3.2808	196.85	2.23713
2	0.01667	1	0.06	0.0546	3.281	0.03729
3	0.2778	16.6646	1	0.91141	54.685	0.62147
4	0.3048	18.2843	1.0971	1	60	0.68187
5	0.00508	0.3047	0.01828	0.01666	1	0.01136
6	0.447	26.8146	1.60907	1.4665	87.9921	1

Example of Speed Conversion:

To convert the speed units let’s take an example of speed “Mile/h into km/h”

Convert 15 Mile/h into km/h.

We know that from the table of speed conversion

1Mile/h = 1.60907 km/h

To find the 15 Mile/h simply multiply the 15 with 1.60907

15 Mile/h = 1.60907 × 15

15 Mile/h = 24.136 km/h

Note:

m/s means meter / second

m/min means meter/ minute

km/h means kilometer / hour

ft/s means foot / second

ft/min means foot / minute

mile/h means mile / hour

Temperature:

1	Degree Celsius (oC)	(oF – 32) × 5/9
		(K – 273.15)
2	Degree Fahrenheit (oF)	(oC × 9/5) + 32
		(1.8 × K) – 459.67
3	Kelvin (k)	(oC + 273.15)
		(oF + 459.67) + 1.8

Example of Temperature Conversion:

To convert the temperature units let’s take an example of temperature “Degree Fahrenheit into Degree Celsius”

Convert 40 Degree Fahrenheit (^oF) into Degree Celsius (^oC)

We know that from the table of temperature conversion

Degree Celsius (^oC) = (^oF – 32) × 5/9.

⁰F is 40 put in this given equation

Degree Celsius (^oC) = (^o40 – 32) × 5/9.

Degree Celsius (^oC) = (8) × 5/9.

Degree Celsius (^oC) = 4.4

It means that

4.4 Degree Celsius (^oC) = 40 Degree Fahrenheit (^oF)

Multiples and Submultiples of SI units Prefix:

S.No	Prefixes	Symbols	Multiplying Factors
1	Exa	e	1018
2	Peta	P	1015
3	tera	t	10­12
4	Giga	g	109
5	Mega	m	106
6	Kilo	k	103
7	hecto	h	102
8	Deca	da	100
9	Deci	d	10-1
10	Centi	c	10-2
11	mili	m	10-3
12	Micro	u	10-6
13	nano	n	10-9
14	pico	p	10-12
15	femto	f	10-15
16	atto	a	10-18

Density:

S.No	Gram/milliliter	Kg/m3	lb/ft3	lb/in3
1	1	1000	62.42197	0.03612
2	0.001	1	0.06242	0.000036
3	0.016	16.02	1	0.000579
4	27.68	27680	1727.84	1

Example of Density Conversion:

To convert the density units let’s take an example of density “kg/m³ into lb/ft³”

Convert 5 kg/m³ into cubic lb/ft³

We know that from the table of density conversion

1 kg/m³ = 0.06242 lb/ft³

To find the 5 kg/m³ simply multiply the 5 with 0.06242

5 kg/m³ = 0.06242 × 5

5 kg/m³ = 0.3121 lb/ft³

Note:

Kg/m³ means kilogram/ meter³

lb/ft³ means pound/ foot³

lb/in³ means pound/ inch³

You may read more:

• Top Civil Engineering Interview Questions and Answers
• Cement Manufacturing Process
• Difference Between Short Column and Long Column