kW to kVA Calculator
Convert kW to kVA instantly using power factor (PF) for generators, UPS, transformers, and single- or three-phase loads.
Calculator
Quick: value and PF presets. Advanced: conversion direction and PF band refine kVA for mixed motor / IT loads.
Inputs (kW, PF, and direction)
Used by engineers for electrical load calculation and equipment sizing. Seven common kW values at 0.85 PF are listed below the calculator; expand View full reference table to filter all checkpoints and open prefilled links here.
Tip: Adjust kW or PF to instantly update the result.
About this calculator
Turn planning kW and a realistic power factor into required kVA for motors, UPS systems, distribution transformers, and general industrial loads, before you size feeders or upstream equipment. For broader energy and current workflows, use the power calculator hub.
Calculation Results
Based on standard power factor assumptions used in industrial equipment sizing.
Engineering disclaimer
This calculator provides power conversion estimates only. For final electrical system design, equipment sizing, and power factor correction, consult a licensed electrical engineer or certified professional. Actual power requirements may vary based on detailed load analysis, harmonics, and specific application requirements.
Common kW values — quick reference (PF 0.85)
Apparent power in kVA depends on power factor. Below are seven common planning checkpoints at 0.85 PF. Open a row to load the same kW and PF in the calculator (results scroll into view). Expand View full reference table for all 34 kW steps with a digit filter.
| kW | kVA @ 0.85 PF | Calculator |
|---|---|---|
| 10 | 11.76 | Open |
| 25 | 29.41 | Open |
| 50 | 58.82 | Open |
| 100 | 117.65 | Open |
| 200 | 235.29 | Open |
| 500 | 588.24 | Open |
| 1000 | 1176.47 | Open |
View full reference table
| kW | kVA @ 0.85 PF | Calculator |
|---|---|---|
| 1 | 1.18 | Open |
| 2 | 2.35 | Open |
| 3 | 3.53 | Open |
| 4 | 4.71 | Open |
| 5 | 5.88 | Open |
| 6 | 7.06 | Open |
| 7 | 8.24 | Open |
| 8 | 9.41 | Open |
| 9 | 10.59 | Open |
| 10 | 11.76 | Open |
| 12 | 14.12 | Open |
| 15 | 17.65 | Open |
| 18 | 21.18 | Open |
| 22 | 25.88 | Open |
| 25 | 29.41 | Open |
| 30 | 35.29 | Open |
| 35 | 41.18 | Open |
| 40 | 47.06 | Open |
| 45 | 52.94 | Open |
| 50 | 58.82 | Open |
| 63 | 74.12 | Open |
| 75 | 88.24 | Open |
| 90 | 105.88 | Open |
| 110 | 129.41 | Open |
| 125 | 147.06 | Open |
| 160 | 188.24 | Open |
| 200 | 235.29 | Open |
| 250 | 294.12 | Open |
| 315 | 370.59 | Open |
| 400 | 470.59 | Open |
| 500 | 588.24 | Open |
| 630 | 741.18 | Open |
| 800 | 941.18 | Open |
| 1000 | 1176.47 | Open |
kW to kVA Formula & Explanation
Apparent power follows kVA = kW ÷ PF and kW = kVA × PF for the reverse. Example: 10 kW at PF 0.85 → about 11.76 kVA. Enter PF between 0.1 and 1.0 from nameplate or field data; motors often sit near 0.80–0.90 and many IT loads near 0.95. The same relationship applies to single-phase and balanced three-phase when you work from total kW and an equivalent PF.
kW vs kVA: kW is real power (does work); kVA is apparent power (must be supplied by the source or equipment rating).
Mechanical loads are often rated in hp (horsepower). Use 1 hp ≈ 0.746 kW (IEC) to express motor power in kW, then use the calculator with your PF.
Need kVA → kW? Open kVA → kW mode (this tool) or choose kVA → kW under Conversion Direction in the calculator above. After you have kVA, continue sizing with kVA to amps or transformer sizing when needed.
- kW → kVA: divide real power by PF.
- kVA → kW: multiply apparent power by PF.
- PF is between 0 and 1; use nameplate or measured values when possible.
More context: Power Factor Guide · kW vs kVA · kW to kVA (3-phase) · kVA to amps · Transformer sizing · Power Calculators Hub
kVA² = kW² + kVAR²; with PF known, PF = kW ÷ kVA.
kW to kVA Conversion Chart (Common Loads)
Illustrative kVA from kVA = kW ÷ PF using a representative real-power step per row (not a catalog rating). Adjust kW and PF in the calculator for your case.
| Equipment | Example kW | Typical PF | kVA |
|---|---|---|---|
| Induction motor | 50 | 0.85 | 58.82 |
| UPS / IT bus | 100 | 0.95 | 105.26 |
| Transformer load | 200 | 0.90 | 222.22 |
| VFD drive | 75 | 0.96 | 78.13 |
| HVAC chiller | 250 | 0.88 | 284.09 |
| General mixed load | 63 | 0.85 | 74.12 |
Frequently Asked Questions
How do you convert kW to kVA?
Use kVA = kW ÷ PF. For practical load checks, enter your measured kW and PF in the calculator above.
What power factor should I use?
Use nameplate or measured PF first. If unavailable, start with 0.80-0.90 for motors or 0.95 for IT loads, then verify with the calculator.
Why does low PF increase kVA?
At the same kW, lower PF means more apparent power is needed. Use the calculator to compare different PF values and see required kVA instantly.
How do I choose kVA for generator or transformer sizing?
Start from nameplate or measured kW, apply a realistic PF to estimate kVA, then add 15–25% design headroom for harmonics, inrush, and load variation before selecting equipment. Validate assumptions with a licensed engineer for final design.