Power Calculators
Power calculators for factory load definition, kW-kVA conversion, current estimation, and equipment sizing workflows for plant expansion, workshop retrofit, and utility planning tasks.
Use this hub to move from load definition to current conversion, protection checks, and final equipment sizing. It is suitable for plant expansions, workshop upgrades, and utility planning where fast pre-design decisions are required before detailed engineering review.
Core Tools
Factory Load Calculator
Estimate total facility demand from equipment inventory and operating assumptions.
Use Calculator ->kVA to Amps (3-Phase)
Check three-phase current quickly for balanced industrial systems.
Use Calculator ->kVA to Amps (Single-Phase)
Convert apparent power to current for single-phase feeders.
Use Calculator ->kW to kVA (3-Phase)
Convert real power to apparent power for 3-phase sizing tasks.
Use Calculator ->kW to kVA Calculator
Translate load demand into kVA requirements for equipment selection.
Use Calculator ->3-Phase Power Calculator
Estimate kW and kVA from voltage, current, and power factor inputs.
Use Calculator ->Generator Size Calculator
Size generator capacity from load and power factor inputs.
Use Calculator ->Transformer Size Calculator
Select practical transformer rating from target kVA demand.
Use Calculator ->Workflows
Use Cases
- Plant expansion: estimate new feeder and transformer demand before procurement.
- Workshop retrofit: validate current and apparent power after machine replacement.
- Utility planning: compare generator and transformer ratings for backup strategy.
Related Guides
FAQ
What is the recommended usage order for power sizing?
Start from load definition, then convert kW and kVA, estimate current, and finally select protection and equipment ratings.
How should I use these results in detailed electrical design?
No. They provide fast engineering estimates and should be followed by code compliance and detailed design checks.
What is the difference between kW, kVA, and current-based sizing?
kW is real load demand, kVA is apparent capacity demand, and current sizing ensures conductors and protection devices can safely carry the calculated load.