Common Unit Conversions in College Physics

Common SI Units, Prefixes, and Conversions worth memorizing !!

What SI unit represents mass?

kilogram (kg)

What SI unit represents length?

meter (m)

What SI unit represents time?

second (s)

What SI unit represents temperature?

kelvin (k)

What SI unit represents amounts of a substance?

mole (mol)

What SI unit represents electric currents?

ampere (A)

What SI unit represents pressure?

pascal (Pa)

How many common prefixes should you memorize? What are they?

7; giga, mega, kilo, centi, milli, micro, and nano

The common prefix “Giga” represents…?

1 × 10^9

The common prefix “Mega” represents…?

1 × 10^6

The common prefix “Kilo” represents…?

1 × 10³

The common prefix “centi” represents…?

1 × 10^-2

The common prefix “milli” represents…?

1 × 10^-3

The common prefix “micro” represents…?

1 × 10^-6

The common prefix “nano” represents…?

1 × 10^-9

What’s the formula for Area?

l x w = A

What’s the formula for Volume?

l x w x h = V

How many seconds (s) are in 1 hour (hr)?

3,600 seconds

How many centimeters (cm) are in 1 inch (in)?

2.54 cm

How many pounds (lbs) are in 1 kilogram (kg)?

2.21 lbs

How many grams (g) are in 1 kilogram (kg)?

1,000 kilograms

How many meters (m) are in 1 kilometer (km)?

1,000 meters

How many feet (ft) are in 1 mile (mi)?

5,280 feet

How many centimeters (cm) are in 1 foot (ft)?

30.48 cm

How many millimeters (mm) are in 1 meter (m)?

1,000 millimeters

How many micrometers (um) are in 1 meter (m)?

1,000,000 micrometers

How many milliseconds (ms) are in 1 second (s)?

1,000 milliseconds

How many centimeters (cm) are in 1 meter (m)?

100 centimeters

How many meters (m) are in 1 mile (mi)?

1,610 meters

How many feet (ft) are in 1 nautical mile (mi)?

6,080 ft