Fleet Service Northwest - Tech Info - Electronics Conversion

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Calculating Electrical Measurements

The following are practical conversion equations to calculate the common electrical units of measure shown. If you have any questions or suggestions for more conversions, please call or email.

Calculating Current

Amperes/Amps (A)

amps=volts/ohms

amps=coulombs/(farads x ohms)

amps=watts/volts

amps=(watts x farads)/coulombs

amps=joules/(volts x seconds)

amps=joules/(coulombs x ohms)

amps=coulombs/seconds

amps=(farads x volts)/seconds

Calculating Potential

Volts (V)

volts=amps x ohms

volts=(coulombs x ohms)/seconds

volts=watts/amps

volts=(watts x seconds)/coulombs

volts=joules/(amps x seconds)

volts=joules/coulombs

volts=electrical horsepower/(amps x 746)

volts=mechanical horsepower/(amps x 745.6999)

volts=(electrical horsepower x seconds)/(coulombs x 746)

volts=(mechanical horsepower x seconds)/(coulombs x 745.6999)

volts=coulombs/farads

volts=(amps x seconds)/farads

Calculating Resistance

Ohms (Ω)

ohms=volts/amps

ohms=watts/amps²

ohms=joules/(amps² x seconds)

ohms=electrical horsepower/(amps² x 746)

ohms=mechanical horsepower/(amps² x 745.6999)

Calculating Power

Watts (w)

watts=volts x amps

watts=volts²/ohms

watts=(volts² x farads)/seconds

watts=amps² x ohms

watts=(joules x amps)/coulombs

watts=(coulombs x amps)/farads

watts=(amps² x seconds)/farads

watts=joules/seconds

watts=horsepower(E)/746

watts=horsepower(I)/745.6999

Electrical Horsepower/Horsepower(E) (hp(E))

horsepower(E)=watts x 746

horsepower(E)=volts x amps x 746

horsepower(E)=(volts² x 746)/ohms

horsepower(E)=(volts² x farads x 746)/seconds

horsepower(E)=amps² x ohms x 746

horsepower(E)=(amps x joules x 746)/coulombs

horsepower(E)=(amps x coulombs x 746)/farads

horsepower(E)=(amps² x seconds x 746)/farads

horsepower(E)=(joules x 746)/seconds

Mechanical/Imperial Horsepower/Horsepower(I) (hp(I))

horsepower(I)=watts x 745.6999

horsepower(I)=volts x amps x 745.6999

horsepower(I)=(volts² x 745.6999)/ohms

horsepower(I)=(volts² x farads x 745.6999)/seconds

horsepower(I)=amps² x ohms x 745.6999

horsepower(I)=(amps x joules x 745.6999)/coulombs

horsepower(I)=(amps x coulombs x 745.6999)/farads

horsepower(I)=(amps² x seconds x 745.6999)/farads

horsepower(I)=(joules x 745.6999)/seconds

Calculating Work

Joules (j)

joules=watts x seconds

joules=amps x volts x seconds

joules=(volts² x seconds)/ohms

joules=volts² x farads

joules=amps² x ohms x seconds

joules=(coulombs x amps x seconds)/farads

joules=coulombs x volts

joules=kilowatt-hours x 3,600,000

Kilowatt-hours (kwh)

kilowatt-hours=watts x hours x 1,000

kilowatt-hours=(watts x seconds)/3,600,000

kilowatt-hours=volts x amps x hours x 1,000

kilowatt-hours=(volts x amps x seconds)/3,600,000

kilowatt-hours=volts² x hours x 1,000/ohms

kilowatt-hours=(volts² x seconds)/(ohms x 3,600,000)

kilowatt-hours=(volts² x farads)/3,600,000

kilowatt-hours=amps² x ohms x hours x 1,000

kilowatt-hours=(amps² x ohms x seconds)/3,600,000

kilowatt-hours=(coulombs x amps x hours x 1,000)/farads

kilowatt-hours=(coulombs x amps x seconds)/(farads x 3,600,000)

kilowatt-hours=(electrical horsepower x hours x 1,000)/746

kilowatt-hours=(mechanical horsepower x hours x 1,000)/745.6999

kilowatt-hours=(electrical horsepower x seconds)/2,685,600,000

kilowatt-hours=(mechanical horsepower x seconds)/2,684,519,640

kilowatt-hours=joules/3,600,000

kilowatt-hours=(coulombs x volts)/3,600,000

Calculating Electrical Charge

Coulombs (c)
coulombs=amps x seconds
coulombs=(volts/ohms)seconds

coulombs=farads x volts

coulombs=joules/volts

coulombs=(watts x seconds)/volts

Calculating Capacitance

Farads (f)

farads=coulombs/volts

farads=coulombs/(amps x ohms)

farads=(coulombs x amps)/watts

farads=coulombs²/seconds

farads=(coulombs x amps x 746)/electrical horsepower

farads=(coulombs x amps x 745.6999)/mechanical horsepower

farads=(amps x seconds)/volts

farads=seconds/ohms

farads=(amps² x seconds)/watts

farads=(amps x seconds)²/joules

farads=(amps² x seconds x 746)/electrical horsepower

farads=(amps² x seconds x 745.6999)/mechanical horsepower

Calculating Time

Seconds (s)

seconds=joules/watts

seconds=(joules x 746)/electrical horsepower

seconds=(joules x 745.6999)/mechanical horsepower

seconds=joules/(volts x amps)

seconds=(kilowatt-hours x 3,600,000)/watts

seconds=(coulombs x volts)/watts

seconds=(farads x volts²)/watts

seconds=coulombs/amps

seconds=(coulombs x ohms)/volts

seconds=(coulombs x volts)/watts

seconds=(farads x volts)/amps

seconds=joules/(volts x amps)

seconds=minutes x 60

seconds=hours x 3,600

seconds=days x 86,400

seconds=weeks x 604,800

Minutes (min.)

minutes=joules/watts

minutes=(joules x 746)/electrical horsepower

minutes=(joules x 745.6999)/mechanical horsepower

minutes=joules/(volts x amps)

minutes=(kilowatt-hours x 3,600,000)/watts

minutes=(coulombs x volts)/watts

minutes=(farads x volts²)/watts

minutes=coulombs/amps

minutes=(coulombs x ohms)/volts

minutes=(coulombs x volts)/watts

minutes=(farads x volts)/amps

minutes=joules/(volts x amps)

minutes=minutes x 60

minutes=hours x 3,600

minutes=days x 86,400

minutes=weeks x 604,800

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