How to convert electric current in amps (A) to electric power in watts (W).
You can calculate watts from amps and volts. You can't convert amps to watts since watts and amps units do not measure the same quantity.
DC amps to watts calculation formula
The power P in watts (W) is equal to the current I in amps (A), times the voltage V in volts (V):
P(W) = I(A) × V(V)
So watts are equal to amps times volts:
watt = amp × volt
or
W = A × V
Example
What is power consumption in watts when the current is 3A and the voltage supply is 110V?
Answer: the power P is equal to current of 3 amps times the voltage of 110 volts.
P = 3A × 110V = 330W
AC single phase amps to watts calculation formula
The real power P in watts (W) is equal to the power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V):
P(W) = PF × I(A) × V(V)
So watts are equal to power factor times amps times volts:
watt = PF × amp × volt
or
W = PF × A × V
Example
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and the RMS voltage supply is 110V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times voltage of 110 volts.
P = 0.8 × 3A × 110V = 264W
AC three phase amps to watts calculation formula
Watts calculation with line to line voltage
The real power P in watts (W) is equal to square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage VL-L in volts (V):
P(W) = √3 × PF × I(A) × VL-L(V)
So watts are equal to square root of 3 times power factor PF times amps times volts:
watt = √3 × PF × amp × volt
or
W = √3 × PF × A × V
Example
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and the RMS voltage supply is 110V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times the voltage of 110 volts.
P = √3 × 0.8 × 3A × 110V = 457W
Watts calculation with line to neutral voltage
The calculation assumes the loads are balanced.
The real power P in watts (W) is equal to 3 times the power factor PF times the phase current I in amps (A), times the line to neutral RMS voltage VL-0 in volts (V):
P(W) = 3 × PF × I(A) × VL-0(V)
So watts are equal to 3 times power factor PF times amps times volts:
watt = 3 × PF × amp × volt
or
W = 3 × PF × A × V
How to convert watts to amps »
Currently, we have around 5666 calculators, conversion tables and usefull online tools and software features for students, teaching and teachers, designers and simply for everyone.
You can find at this page financial calculators, mortgage calculators, calculators for loans, calculators for auto loan and lease calculators, interest calculators, payment calculators, retirement calculators, amortization calculators, investment calculators, inflation calculators, finance calculators, income tax calculators, compound interest calculators, salary calculator, interest rate calculator, sales tax calculator, fitness & health calculators, bmi calculator, calorie calculators, body fat calculator, bmr calculator, ideal weight calculator, pace calculator, pregnancy calculator, pregnancy conception calculator, due date calculator, math calculators, scientific calculator, fraction calculator, percentage calculators, random number generator, triangle calculator, standard deviation calculator, other calculators, age calculator, date calculator, time calculator, hours calculator, gpa calculator, grade calculator, concrete calculator, subnet calculator, password generator conversion calculator and many other tools and for text editing and formating, downloading videos from Facebok (we built one of the most famous Facebook video downloader online tools). We also provide you online downloanders for YouTube, Linkedin, Instagram, Twitter, Snapchat, TikTok and other social media sites (please note we does not host any videos on its servers. All videos that you download are downloaded from Facebook's, YouTube's, Linkedin's, Instagram's, Twitter's, Snapchat's, TikTok's CDNs. We also specialise on keyboard shortcuts, ALT codes for Mac, Windows and Linux and other usefull hints and tools (how to write emoji online etc.)
There are many very usefull online free tools and we would be happy if you share our page to others or send us any suggestions for other tools which will come on your mind. Also in case you find any of our tools that it does not work properly or need a better translation - please let us know. Our tools will make your life easier or simply help you to do your work or duties faster and in more effective way.
These below are the most commonly used by many users all over the world.
- Free online calculators and tools
- Time zones/Clocks/Dates calculators
- Free Online Units Conversion Calculators
- Free online web design tools
- Free online electricity & electronics tools
- Mathematics
- Online Tools
- Text Tools
- PDF Tools
- Code
- Ecology
- Others
- Free online downloaders for social media
- Marketing
- My PC / computer
- Free online energy conversion tools
- Free online length conversion Calculators
- Free online number conversion tools
- Free online power converter calculators
- Free online temperature conversion tools
- Free online weight conversion tools
- Free online voltage conversion tools
- Free online frequency conversion tools
- Free online color converter tools
- Free online image conversion tools
- Free online electrical calculation
- Electrical charge converter calculators
- dB converter
- How to convert 1 amp to watts
- How to convert 1 watt to amps
- How to convert 10 amps to watts
- How to convert 100 amps to watts
- How to convert 100 watts to amps
- How to convert 1000 watts to amps
- How to convert 1200 watts to amps
- How to convert 15 amps to watts
- How to convert 2 amps to watts
- How to convert 2000 watts to amps
- How to convert 3 amps to watts
- How to convert 500 watts to amps
- How to convert 600 watts to amps
- How to convert 800 watts to amps
- How to convert Ah to mAh
- How to convert amps to kilowatts
- How to convert amps to kVA
- How to convert amps to milliamps
- How to convert amps to ohms
- How to convert amps to VA
- How to convert amps to volts
- How to convert amps to watts
- How to convert electron-volts to volts
- How to convert joules to kilowatts
- How to convert joules to volts
- How to convert joules to watts
- How to convert kilojoules to kilowatts
- How to convert kilojoules to watts
- How to convert kilowatts to amps
- How to convert kilowatts to joules
- How to convert kilowatts to kilojoules
- How to convert kilowatts to kilowatts-hour
- How to convert kilowatts to volts
- How to convert kilowatts-hour to kilowatts
- How to convert kVA to amps
- How to convert kVA to kW
- How to convert kVA to VA
- How to convert kVA to watts
- How to convert kW to kVA
- How to convert kW to VA
- How to convert kW to Wh
- How to convert kWh to watts
- How to convert lumens to lux
- How to convert lumens to watts
- How to convert lux to lumens
- How to convert mAh to Ah
- How to convert mAh to Wh
- How to convert milliamps to amps
- How to convert ohms to amps
- How to convert ohms to volts
- How to convert VA to amps
- How to convert VA to kVA
- How to convert VA to kW
- How to convert VA to watts
- How to convert volts to amps
- How to convert volts to electron-volts
- How to convert volts to joules
- How to convert volts to kilowatts
- How to convert volts to ohms
- How to convert volts to watts
- How to convert watt-hours to watts
- How to convert watts to amps
- How to convert watts to joules
- How to convert watts to kilojoules
- How to convert watts to kVA
- How to convert watts to kWh
- How to convert watts to lumens
- How to convert watts to VA
- How to convert watts to volts
- How to convert watts to watt-hours
- How to convert Wh to kW
- How to convert Wh to mAh
And we are still developing more. Our goal is to become the one-stop, go-to site for people who need to make quick calculations or who need to find quick answer for basic conversions.
Additionally, we believe the internet should be a source of free information. Therefore, all of our tools and services are completely free, with no registration required. We coded and developed each calculator individually and put each one through strict, comprehensive testing. However, please inform us if you notice even the slightest error – your input is extremely valuable to us. While most calculators on Justfreetools.com are designed to be universally applicable for worldwide usage, some are for specific countries only.