Lenght
To convert Meter to Feet : M*(3937/1200)=F
To convert Feet to Meter : F*(1200/3937)=M
To convert Meter to Yard : M*(3937/3600)=Y
To convert Yard to Meter : Y*(3600/3937)=M
To convert Millimeter to Centimeter : M*10=C
To convert Centimeter to Decimeter : C*10=D
To convert Decimeter to Meter : D*10=M
To convert Meter to Dekameter : M*10=D
To convert Dekameter to Hectometer : D*10=H
To convert Hectometer to Kilometer : H*10=K
To convert Mil to Inch : M/1000=I
To convert Inch to Feett : I/12=F
To convert Feet to Yard : F/3=Y
To convert Yard to Rod : Y/5,5=R
To convert Rod to Furlong : R/40=F
To convert Furlong to Statute mile : F/8=S
To convert Statute mile to League : S/3=L
To convert Yard to Fathom : Y/2=F
To convert Cable to Fathom : C/120=F
One nautical mile is a minute 1/60 of a Earth degree

Square
To convert Square inches to Square Feet : SI/144=SF
To convert Square Feet to Square Yard : SF/9=SY
To convert Square Yard to Square Rod : SY/30,25=SR
To convert Square Rod to Square Mile : SR/(160*640)=SM
To convert Square Millimeters to Square centimeter : SM/100=SC
To convert Square Centimeter to Square Meter : SC/10000=SM

Cubic
To convert Cubic Inches to to Cubic Feet : CI/1728=CF
To convert Cubic Feet to Cubic Yard : CF/27=CY
To convert Cubic Feet to Cubic Meter : CF*((1200/3937)*(1200/3937)*(1200/3937))=CM
To convert Cubic Meter to Cubic Feet : CM*((3937/1200)*(3937/1200)*(3937/1200))=CF
To convert Cubic Millimeters to Cubic Centimeter : CM/1000=CC
To convert Cubic Centimeters to Cubic Decimeter : CC/1000=CD
To convert Cubic Decimeters to Cubic Meter : CD/1000=CM

Weight
To convert Miligrams to Centigram : M/10=C
To convert Centigram to Decigram : C/10=D
To convert Decigram to Gram : D/10=G
To convert Gram to Dekagram : G/10=D
To convert Dekagram to Hectogram : D/10=H
To convert Hectogram to Kilogram : H/10=K
To convert Kilogram to Metric ton : K/1000=M
To convert Grain to Dram : G/(27(11/32))=D
To convert Dram to Ounce : D/16=O
To convert Ounce to Pound = O/16=P
To convert Pound to Kilogram : P*0,45359237=K

Temperature
To convert Celsius to Fahrenheit: 32+((9/5)*C)=F
To convert Fahrenheit to Celsius: (F-32)*(5/9)=C