Formulas and units Part 1

Multiples and submultiples:

Conversion factors for Length:

1 m = 3.281 ft = 1.094 yards (yd)

1 inch (in) = 2.54 cm

1 foot (ft) = 12 in

1 mile (mi) = 1.61 km

Conversion factors for Area:

1 square meter (m² ) = 10.76 square feet (ft²)

1 ft²= 929 square centimeter (cm2 )

1 hectare = 10,000 m² = 2.471 acres

1 acre = 43,560 ft2

Conversion factors for Volume:

1 mL = 1 cubic centimeter (cc or cm³ )

1 L = 1000 mL = 1.057 quarts (qt)

1 cubic meter (m³ ) = 1000 L

1 gal = 3.7854 L

Conversion factors for Time:

1 earth year = 365.25 days

1 week = 7 days

1 day = 24 hours (hr)

1 hr = 60 minutes (min) = 3600 sec

1 min = 60 seconds (s)

Conversion factors for Mass:

1 kg = 1000 g = 2.2 pounds (lb)

1 g = 1000 mg

1. metric ton = 1000 kg

2. pound = 454 g

Area of Triangle:

Area of Rectangle:

Area of Trapezoid (US) or Trapezium (UK)

Area of Ellipse:

Area of Square:

Area of Parallelogram:

Area of Circle:

Area of Sector:

Formulas for Cube:

V = L³

A = 6L²

Formulas for Rectangular Box:

V = L x w x H

A = 2Lw + 2Lt +2 LWt

Formulas for Cylinder:

Formulas for Sphere:

Formulas for Cone:

Formulas for Right Square Pyramid:

Formula for density:

density = mass/volume

or

p=m/v

Formula for water displacement:

Vobject = Vf - Vi

Vi = initial volume of water

Vf = final volume of water

Formula for SG (Specific Gravity):

Celsius to Fahrenheit

Fahrenheit to Celsius:

Celsius to Kelvin:

Kelvin to Celsius:

Percent Deviation Formula:

Percent Error Formula:

Absolute Deviation Formula:

Absolute Error Formula:

Percent Error Formula: