FIND YOUR POWER CALCULATION TOOLS

Metric Designator and Trade Sizes
metric designator 12 16 21 27 35 41 53 63 78 91 103 129 155
trade size 0.38 0.50 0.75 1 1.25 1.5 2 2.5 3 3.5 4 5 6

US Weights and Measures / Metric Equivalent Chart
  in. ft. yd. mile Mm Cm M Km
1 IN 1 0.0833 0.0278 1.578x10^-5 25.4 2.54 0.0254 2.54x10^-5
1 FOOT 12 1 0.333 1.894x10^-4 304.8 30.48 0.3048 3.048x10^-4
1 YARD 36 3 1 5.6818x10^-4 914.4 91.44 0.9144 9.144x10^-4
1 MILE 63,360 5,280 1,760 1 1,609,344 160,934.40 1,609,344 1.609344
1 MM 0.03937 0.0032808 1.0936x10^-3 6.2137x10^-7 1 0.1 0.001 0.000001
1 CM 0.3937 0.0328084 0.0109361 6.2137x10^-6 10 1 0.01 0.00001
1 M 39.37 3.28084 1.09361 6.2137x10^-4 1000 100 1 0.001
1 KM 39,370 3,280.84 1,093.61 0.62137 1,000,000 100,000 1,000 1

Useful Conversions / Equivalents
1 BTU RAISES 1 LB OF WATER 1 DEGREE FAHRENHEIT
1 GRAM CALORIE RAISES 1 GRAM OF WATER 1 DEGREE CELCIUS
1 CIRCULAR MIL EQUALS 0.78 SQ MIL
1 SQ MIL
EQUALS 1.27 CIR MILS
1 MIL EQUALS 0.001 IN


Power Requirement Calculator
Phase Volts Required
V
Amperes
I
Power
Factor
= Power
kW
1
3
.8
1.0

Converting kW to kVA
kW = kVA

Converting kVA to kW
kVA = kW

Converting kW to HP
kW = HP

What size genset is needed to start a 3 phase electric motor Direct on Line (DOL) start?
HP of
Motor
= Generator
kVA Required

Calculating Amperes (when you know kVA)
Phase
1,2,3
Generator
kVA
Volts
Required
= Ampere
I

 

* LEGAL DISCLAIMER: Whenever complex electrical calculations are involved, it is always wise to seek the assistance of a certified electrician. The calculators on this page are offered to assist in generating general estimations only.  In most instances, there are numerous additional factors that should be accounted for (such as altitude, site conditions, iron losses, motor efficiencies, etc.).  If you are still unsure or would like assistance analyzing your current situation, feel free to contact us with your questions.