CalcPanel

kVA to kW Calculator (kW = kVA × PF)

Convert kVA to kW with power factor—instant real power from nameplate apparent power for UPS, transformers, and generators.

Formula: kW = kVA × PF. Example: 1 kVA × 0.8 = 0.8 kW. Need the reverse? Use kW to kVA.

Calculator

Enter apparent power and PF. Result updates instantly: kW = kVA × PF.

Example: 100 kVA transformer or UPS nameplate.
Motors/UPS often 0.80–0.95; resistive ≈ 1.0.

About this calculator

This kVA to kW calculator converts apparent power to real power with kW = kVA × PF. It is the reverse of kW to kVA. After you have kW, continue to current tools or browse the power calculator hub.

Calculation Results

≈ 80 kW real power

100 kVA · PF 0.8 · ≈ 60 kVAR reactive

Formula: kW = kVA × PF

Also equals (from this kW / kVA):

  • 80,000 W · 80 kW
  • 100,000 VA · 107.24 HP (electrical, ÷0.746)

Need line current next? Use kVA to Amps or Amps to kW.

Estimate from nameplate kVA and assumed PF. Harmonics, continuous-load margins, and OEM derates are not applied.

Continue Your Calculation

Have real kW from kVA × PF? Continue to amps screening (link updates from your result).

Amps to kW →

kVA to kW conversion chart (kW)

Values are kW = kVA × PF for PF 0.8 / 0.85 / 0.9 / 1.0. Click a kVA button to load the calculator (defaults to PF 0.8).

kVA PF 0.8 PF 0.85 PF 0.9 PF 1.0
0.800.850.901.00
1.601.701.802.00
2.402.552.703.00
4.004.254.505.00
6.006.386.757.50
8.008.509.0010.0
12.012.813.515.0
16.017.018.020.0
20.021.322.525.0
24.025.527.030.0
30.031.933.837.5
36.038.340.545.0
40.042.545.050.0
60.063.867.575.0
80.085.090.0100
90.095.6101113
120128135150
160170180200
180191203225
200213225250
240255270300
320340360400
400425450500
600638675750
8008509001000

Units: kW. For a custom PF, use the calculator above. At PF 1.0, kVA = kW numerically.

kVA to kW formula & Excel

kW = kVA × PF  ·  kVA = kW ÷ PF (reverse on kW to kVA)

  • kVA — apparent power (nameplate / transformer rating)
  • kW — real (active) power delivered to the load
  • PF — power factor (0–1); cos φ for sinusoidal systems
  • kVAR — reactive ≈ √(kVA² − kW²)

Excel / spreadsheet

  • kVA → kW: =A2*B2 (kVA in A2, PF in B2)
  • kW → kVA: =A2/B2 (kW in A2, PF in B2)
  • W from kW: =C2*1000 · HP (electrical): =C2/0.746

Worked examples

  • 1 kVA × 0.8 = 0.8 kW (800 W · ≈ 1.07 HP)
  • 20 kVA × 0.8 = 16 kW; at PF 0.85 → 17 kW
  • 100 kVA × 0.8 = 80 kW; reactive ≈ 60 kVAR
  • 500 kVA × 0.9 = 450 kW (typical genset PF rating)

Definitions: kVA vs kW. Derivation & worked examples: kW to kVA formula.

Equipment examples & when to use which tool

Equipment / scenario Typical kVA Assumed PF ≈ kW
Small UPS / IT rack5–200.8–0.94–18
Distribution transformer75–5000.8–0.9560–475
Standby generator nameplate100–10000.8 / 0.980–900
Resistive heater bankany≈1.0kW ≈ kVA
Goal Tool
Convert kVA → kW with PFThis page
Convert kW → kVA with PFkW to kVA
Convert kVA → line ampskVA to Amps
Convert amps ↔ kWAmps to kW
Power triangle / kVARkW to kVAR

Typical uses: UPS real-power screening from kVA nameplate, transformer load vs PF, generator kW from kVA rating, and feeder planning before amps tools.

Frequently Asked Questions

How do I convert kVA to kW?

Use kW = kVA × PF. Example: 100 kVA × 0.8 = 80 kW.

How many kW is 1 kVA?

At PF 1.0 → 1 kW. At PF 0.8 → 0.8 kW. At PF 0.85 → 0.85 kW. Use the 1 kVA preset above.

What is 20 kVA in kW?

At PF 0.8 → 16 kW. At PF 0.85 → 17 kW. At PF 1.0 → 20 kW.

Is kVA the same as kW?

No. They match only when PF = 1.0. Otherwise kW < kVA for lagging loads.

Do I need power factor to convert kVA to kW?

Yes. Without PF you cannot get real power from apparent power.

How do I calculate kVA to kW in Excel?

Use =A2*B2 (kVA in A2, PF in B2). Example: 100 × 0.8 = 80. Reverse: =A2/B2 for kVA from kW.

What are W, VA, and HP under the result?

W = kW × 1000, HP ≈ kW ÷ 0.746 (electrical). VA = kVA × 1000 is apparent power (not reduced by PF).

How is this different from kW to kVA?

This page is kVA → kW. Reverse conversion is on kW to kVA (kVA = kW ÷ PF).