kVA to Amps Single Phase Calculator
This page targets single-phase kVA→line current for branch-level estimates. For three-phase, combined workflow sections, breaker bracket tables, and hub-style internal links, use the main kVA to Amps calculator (hub).
Quick Calculator
Quick: kVA and voltage presets. Advanced: branch vs feeder voltage choice must match how you read nameplate FLA before comparing to OCPD tables.
About this calculator
Converts single-phase apparent kVA and circuit voltage into line current (A) for branch planning before derating conversations. For combined phase modes and downstream links, use the main kVA to Amps calculator or the power calculator hub.
Result
Line current (approx.): 21.74 A
Default: 5 kVA @ 230 V single-phase. I = (kVA × 1000) ÷ V
Engineering disclaimer
This tool provides preliminary screening estimates only. Final design, selection, and compliance must be validated with applicable standards, manufacturer data, and review by a qualified professional.
Need more advanced calculations?
Open Full Calculator →Formula
I = (kVA x 1000) / V
Single phase conversion divides apparent power by circuit voltage to estimate current. It is useful for quick checks before moving into detailed design.
Example
- 5 kVA at 230V -> 21.7 A (single-phase)
- 12 kVA at 120V -> 100.0 A (single-phase)
FAQ
What is the single phase kVA to amps formula?
Use I = (kVA x 1000) / V for single phase systems.
Is line voltage used in single phase conversion?
Yes, use the actual supply voltage of the circuit, such as 120 V or 230 V.
What voltage should I use?
Use the rated operating voltage of your single phase load to keep the estimate practical.
Advanced Result Explanation and Next Step
This quick calculator is best for fast checks. For advanced decisions, include protection margin, conductor temperature rating, and inrush behavior.
Related tools: pair this output with your protection workflow before final device selection.
Continue to kVA to amps full calculator, compare with kW to kVA converter, and cross-check with 3-phase power calculator for mixed systems.