Perform fast calculations with our user-friendly online calculator! Conveniently crunch numbers and solve equations instantly. Ideal for quick math tasks, our tool simplifies your daily computations effortlessly. Try our intuitive calculator for accurate results on the go!
Motor FLA Calculator helps you calculate motor full load amps easily. Find motor FLA using accurate formulas for single and three-phase motors.
A motor FLA calculator helps you find the full load current of an electric motor in seconds. FLA means Full Load Amps. It tells you how much current a motor draws when it runs at its rated power. This value is very important for selecting cables, circuit breakers, and overload protection.
We developed this motor FLA calculator so users can easily calculate motor full load current without complex formulas or electrical knowledge. You only need basic motor details, and the calculator does the rest accurately.
FLA on a motor means Full Load Amps. It is the amount of current a motor consumes when operating at full rated load, rated voltage, rated frequency, and normal conditions.
Motor FLA is usually written on the motor nameplate. If it is not available, you can calculate it using a standard motor FLA formula.
Knowing the motor FLA helps prevent overheating, electrical damage, and incorrect motor sizing.
To calculate the FLA of a motor, you need the motor power, voltage, efficiency, power factor, and motor type. The calculation method depends on whether the motor is single-phase or three-phase.
The motor FLA calculation is based on real electrical power, not just rated power. That is why efficiency and power factor are included.
For a single-phase motor, the motor FLA formula is:
FLA = (Power in kW × 1000) ÷ (Voltage × Power Factor × Efficiency)
For a three-phase motor, the motor FLA formula is:
FLA = (Power in kW × 1000) ÷ (Voltage × 1.732 × Power Factor × Efficiency)
If motor power is given in horsepower, it is first converted to kilowatts using:
Power in kW = Power in HP × 0.746
These formulas are standard and used by electrical engineers worldwide.
Let us calculate the FLA of a 20 HP three-phase motor.
Motor power is 20 HP
Voltage is 415 V
Power factor is 0.85
Efficiency is 0.90
First, convert horsepower to kilowatts.
Power in kW = 20 × 0.746 = 14.92 kW
Now apply the three-phase motor FLA formula.
FLA = (14.92 × 1000) ÷ (415 × 1.732 × 0.85 × 0.90)
FLA = 14920 ÷ 550.2
FLA ≈ 27.1 Amps
So, the full load current of a 20 HP motor is approximately 27 amps.
The most accurate way to find motor full load current is by using the motor nameplate. If the nameplate is not available, the motor FLA calculator gives a very close and reliable value.
Our calculator includes efficiency and power factor, which makes the result more accurate than basic calculators.
This motor FLA calculator is fast, accurate, and simple. It works for both single-phase and three-phase motors. It supports kilowatt and horsepower inputs. It shows step-by-step calculations for better understanding.
It is ideal for electricians, engineers, technicians, students, and industrial users.
A motor FLA calculator is an essential tool for electrical work. It helps you calculate motor full load current safely and accurately. Our calculator follows standard electrical formulas and provides reliable results.
If you want to calculate motor FLA without confusion or manual math, this tool is the best solution.
FLA is the full load current a motor draws when operating at its rated power and voltage.
You calculate motor FLA using motor power, voltage, power factor, efficiency, and the correct motor formula.
A 20 HP three-phase motor at 415 V typically has an FLA of about 27 amps, depending on efficiency and power factor.
Motor FLA is the rated running current at full load. Actual current may change with load conditions.
Motor FLA is used for cable sizing, breaker selection, overload protection, and safe motor operation.