Mechanical Engineering Conversions and Constants

Kilogram to Pound Mass

$$1\operatorname{\left\lbrack kg\right\rbrack}=2.205\left\lbrack\operatorname{lb}m\right\rbrack$$

Slug to Pound Mass

$$1\operatorname{\left\lbrack slug\right\rbrack}=32.2\left\lbrack\operatorname{lb}m\right\rbrack$$

Metric Ton to Kilogram

$$1\operatorname{\left\lbrack MT\right\rbrack}=1000\left\lbrack\operatorname{kg}\right\rbrack$$

Short Ton to Pound Mass

$$1\left\lbrack short.ton\right\rbrack\operatorname{}=2000\left\lbrack\operatorname{lb}m\right\rbrack$$

Long Ton to Pound Mass

$$1\left\lbrack long.ton\right\rbrack\operatorname{}=2240\left\lbrack\operatorname{lb}m\right\rbrack$$

Avogadro’s Number

$$6.022\cdot10^{23}$$

Density of Air in Standard Conditions (S.I. and English)

$$1.2\left\lbrack\frac{\operatorname{kg}}{m^3}\right\rbrack\operatorname{}=0.075\left\lbrack\frac{\operatorname{lb}m}{\operatorname{ft}^3}\right\rbrack$$

Density of Water in Stadard Conditions (S.I. and English)

$$1000\left\lbrack\frac{\operatorname{kg}}{m^3}\right\rbrack\operatorname{}=62.4\left\lbrack\frac{\operatorname{lb}m}{\operatorname{ft}^3}\right\rbrack$$

Specific Weight of Water (S.I. and English)

$$9810\left\lbrack\frac{N\operatorname{}}{m^3}\right\rbrack\operatorname{}=62.4\left\lbrack\frac{\operatorname{lb}f}{\operatorname{ft}^3}\right\rbrack$$

Atmospheric Pressure in Kilo-Pascal

$$101.325\left\lbrack kPa\right\rbrack$$

Atmospheric Pressure in Bars

$$1.01325\left\lbrack bars\right\rbrack$$

Atmospheric Pressure in Pounds per Square Inch

$$14.7\left\lbrack psi\right\rbrack$$

Atmospheric Pressure in Torr / millimeter of Mercury

$$760\left\lbrack torr\right\rbrack=760\left\lbrack\operatorname{mm}Hg\right\rbrack$$

Atmospheric Pressure in Inch of Mercury

$$29.92\left\lbrack inHg\right\rbrack$$

Atmospheric Pressure in Meter of Water

$$10.33\left\lbrack mH_2O\right\rbrack$$

Degrees Fahrenheit from Degrees Celsius (Temperature)

$$\degree F=\frac95\degree C+32$$

Degrees Celsius from Degrees Fahrenheit (Temperature)

$$\degree C=\frac59\left(\degree F-32\right)$$

Fahrenheit Degree from Celsius Degree (ΔTemperature)

$$F\degree=\frac95C\degree$$

Temperature where $\degree C=\degree F$

$$-40\degree$$

Kelvin from Degrees Celsius

$$K=\degree C+273$$

Rankine from Degrees Fahrenheit

$$R=\degree F+460$$

Freezing Point of Water (S.I. and English)

$$0\left\lbrack\degree C\right\rbrack=32\left\lbrack\degree F\right\rbrack$$

Boiling Point of Water (S.I. and English)

$$100\left\lbrack\degree C\right\rbrack=212\left\lbrack\degree F]\right.$$

Cubic Meter to Liters

$$1\left\lbrack m^3\right\rbrack=1000\left\lbrack L\right\rbrack$$