Kva to Kilowatts Calculator

kVA to Kilowatts (kW) Calculator

Standard industrial value is 0.8

Result

0 kW

function calculateKVAtoKW() { var kvaValue = document.getElementById('kva_input').value; var pfValue = document.getElementById('pf_input').value; var resultBox = document.getElementById('kva_result_box'); var kwOutput = document.getElementById('kw_output'); var explanation = document.getElementById('kva_explanation'); if (kvaValue === "" || pfValue === "") { alert("Please enter both kVA and Power Factor values."); return; } var kva = parseFloat(kvaValue); var pf = parseFloat(pfValue); if (isNaN(kva) || isNaN(pf)) { alert("Please enter valid numbers."); return; } if (pf 1) { alert("Power Factor must be between 0 and 1."); return; } var kw = kva * pf; var formattedKw = kw.toLocaleString(undefined, { minimumFractionDigits: 0, maximumFractionDigits: 3 }); kwOutput.innerText = formattedKw; explanation.innerText = "At a power factor of " + pf + ", a " + kva + " kVA system provides " + formattedKw + " kW of actual working power. The difference is reactive power used for magnetic fields."; resultBox.style.display = 'block'; }

Understanding kVA and kW Conversions

Converting kVA (kilo-volt-amperes) to kW (kilowatts) is essential for sizing generators, UPS systems, and industrial electrical equipment. While kVA represents "Apparent Power," kW represents "Real Power" (the actual work done).

The kVA to kW Formula

kW = kVA × Power Factor (PF)

Key Definitions

• kVA (Apparent Power): The total amount of power in a system. It is the product of voltage and current.
• kW (Real/Active Power): The amount of power that actually performs work, such as turning a motor or heating an element.
• Power Factor (PF): The ratio of real power to apparent power. In most commercial environments, a power factor of 0.8 is standard.

Common Power Factor Ratings

Device Type	Typical PF
Three-Phase Diesel Generator	0.8
Incandescent Light Bulbs	1.0
Electric Motors (Loaded)	0.7 – 0.9
Uninterruptible Power Supply (UPS)	0.7 – 1.0

Example Calculation

If you have a 150 kVA generator with a rated power factor of 0.8, the calculation would be:

150 kVA × 0.8 = 120 kW

This means the generator can handle a continuous load of 120 kilowatts of real power.