Amps to Watts Calculator
Quickly convert electric current (amps) to power (watts) using this simple calculator. Supports single-phase and three-phase AC/DC systems with customizable voltage inputs.
Quick Intro: Convert Amps to Watts
To convert amps to watts, multiply the current (in amperes) by the voltage (in volts). In AC systems, the calculation may include a power factor and phase type. This amps to watts calculator instantly provides accurate power output values for DC, single-phase AC, and three-phase AC circuits, helping you design and troubleshoot electrical systems with confidence.
Formula for Watts calculation
- DC Circuit: Watts = Amps × Volts
- AC Single-Phase: Watts = Amps × Volts × Power Factor
- AC Three-Phase: Watts = √3 × Amps × Volts × Power Factor
Amps to Watts Calculator Overview
The Amps to Watts Calculator is a user-friendly tool designed to help students, engineers, and electricians convert current (in amperes) to power (in watts). Whether you're working with single-phase, three-phase, or DC circuits, the calculator provides quick and accurate results based on the entered voltage and current. For single-phase systems, the formula used is Watts = Amps × Volts. In three-phase circuits, the calculation varies slightly and includes a square root of 3 multiplier and power factor if needed. This calculator is essential for sizing electrical loads, understanding energy consumption, and planning circuits effectively. It's optimized for both beginners and professionals.
Sample Amps to Watts conversion table
| Type | Amps (A) | Volts (V) | PF | Watts (W) |
|---|---|---|---|---|
| DC | 10 | 12 | — | 120 |
| AC Single-Phase | 5 | 230 | 0.9 | 1035 |
| AC 3-Phase | 15 | 400 | 0.8 | 8311.17 |
Frequently Asked Questions - Amps to Watts Calculator:
What is the formula to convert amps to watts?
Watts = Amps × Volts for DC; AC may include a power factor.
Does power factor affect watts calculation?
Yes, in AC circuits, power factor is crucial to get accurate watt values.
Is the formula different for single-phase and three-phase?
Yes. Three-phase uses √3 × Amps × Volts × PF.
Can this calculator be used for DC circuits?
Yes, it supports DC, single-phase, and three-phase systems.
What units do I need to input?
Amps (A) for current and Volts (V) for voltage.
What is a power factor?
It's the efficiency ratio between real power and apparent power in AC circuits.
Why use a calculator instead of manual math?
To avoid errors and save time on repetitive calculations.
Do household devices use single-phase or three-phase?
Most household devices use single-phase electricity.
Can I calculate watts if I only know amps?
You need to know voltage too; then multiply it by amps.
Is this calculator accurate?
Yes, it uses standard formulas used in electrical engineering.
Related Posts
No load current calculator
Calculate no-load current for motors and transformers from rated power, voltage, power factor, and efficiency, or estimate from measured input at no load.
VA to Watts Calculator
Easily convert VA (volt-amperes) to watts using this calculator. Works for both power factor-based and pure resistive circuits. Simple, accurate, and fast.
max voltage calculator
Quickly find the maximum allowable voltage for components or systems using RMS/peak conversions, derating, and breakdown limits. Useful for design and safety checks.
string efficiency calculator
Calculate string efficiency for suspension insulators by comparing total voltage to disc voltage distribution. Ideal for power transmission line design.
kVA to Amps Calculator
Quickly convert kVA to Amps for single-phase and three-phase systems. Use our easy calculator for 120V, 230V, 400V, and more. Ideal for engineers and electricians.
neutral current calculator
Compute neutral current from unbalanced 3-phase line-to-neutral loads. Enter Ia, Ib, Ic (A) to get In (A) instantly—plus formula, sample table, and FAQs.