Electrical Reference
Electrical Units & Conversions
A field-ready reference for common electrical quantities.
Keep units visible through every step; most field conversion errors come from hidden multipliers.
Common prefixes
- milli = 10⁻³; kilo = 10³; mega = 10⁶.
- 1 kW = 1,000 W; 1 MΩ = 1,000,000 Ω.
Power
- W is real power; VA is apparent power; var is reactive power.
Practice
- Write the unit beside every input and convert before multiplying.
Verify
- Perform an order-of-magnitude check against equipment ratings.