App Detail » Electrical Formulator

What's New

This app has been updated by Apple to display the Apple Watch app icon.

Pro Bug Fix

App Description

Solve any electrical design problem with hundreds of conversion and calculation formulas. The best tool in your kit, this formulator lets you save and even email or print your results. Conveniently displays your “most used” and “recently used” formulas. Now includes 100 charts as well as direct access to Electrical Code online from many states

Perform calculations related to:
Batteries
BTU Conversions
Costs
Kilowatts,
Joules
Generators
Impedance
Motors
Ohm's Law
Transformers
Voltage Drop
Wiring

BATTERIES
• Starting motor amperage
• Number of cells required
• Operating time

COSTS
• Operating lights and appliances
• Using appliances
• Hours of new bulb usage
• Insulation years to payback

GENERATOR
• Direct Current Generator
• Generator amperage output
• Generator efficiency

IMPEDANCE
• Resistance & reactance are known
• Resistance & inductive reactance are known

MISCELLANEOUS
• kVA to kW
• Parallel Circuits
• Total resistance
• Capacitance
• Reactance (X)
• Inductive Reactance
• Capacitance Reactance
• Bandwidth

MOTORS
• Locked rotor current
• Single-phase motors
• Three phase motors
• Motor kVA calculations
• When Fla is known
• When motor kVA per horsepower is known
• Motor kVA when above not known
• Speed of motor


BATTERIES
• Starting motor amperage
• Number of cells required
• Operating time
Btu CONVERSIONS
• Btu to calories
• Btu to cubic ft-atm
• Btu to foot pounds
• Btu to ft-lbf
• Btu to gram-cal
• Btu to gram-cms
• Btu to horsepower-hr
• Btu to inch-lbf
• Btu to joules
• Btu to kilocalories
• Btu to liter-atm
• Btu to pounds-cal
• Btu to watt-hr

COSTS
• Operating lights and appliances
• Using appliances
• Hours of new bulb usage
• Insulation years to payback

KILOWATTS AND JOULES CONVERSIONS
• kilowatts to Btu/Hr
• kilowatts to Btu/min
• kilowatts to Btu/sec
• kilowatts to erg/sec
• kilowatts to foot-lbs/hr
• kilowatts to foot lbs/min
• kilowatts to foot-lbs/sec
• kilowatts to gigawatts
• kilowatts to gram-cm/sec
• kilowatts to (metric) horsepower
• kilowatts to horsepower
• kilowatts to joules/sec
• kilowatts to kilogram-cal/min
• kilowatts to kilogram- cal/sec
• kilowatts to kilogram-M/sec
• kilowatts t lumens
• kilowatts to megajoules/hr
• Lumens
• Lumens to Btu min
• Lumens to Btu sec
GENERATOR
• Direct Current Generator
• Generator amperage output
• Generator efficiency
IMPEDANCE
• Resistance & reactance are known
• Resistance & inductive reactance are known

MOTORS
• Locked rotor current
• Single-phase motors
• Three phase motors
• Motor kVA calculations
• When Fla is known
• When motor kVA per horsepower is known
• Motor kVA when above not known
• Speed of motor
OHM'S LAW
• Calculate for power
• Power
• Calculate for Resistance
• Calculate for voltage

TRANSFORMERS
• Primary amperes
• Secondary amperes
• Transformers sizes full load cur
• Single phase 208 V
• Single phase 240 v
• Single phase 480 v
• Three phase 208 v
• Three phase 240 v
• Three phase 480 v
• Rated full load
• Impedance of secondary
• Amperage capacity from secondary
VOLTAGE DROP
• Voltage drop calculations feet
• 1 phase copper
• 1 phase aluminum
• 3-phase copper
• 3 phase Aluminum
• Voltage drop calculations meters
• 1 phase copper meters
• 1 phase aluminum meter
• 3 phase copper meters
• 3 phase aluminum meters
WIRING
• Wire size
• Wire length copper
• Wire resistance
• Wire length aluminum
• Amp to be calculated
• Conduit size

App Changes

• June 24, 2011 New version 3.5
• August 25, 2011 New version 3.6
• October 12, 2011 New version 3.7
• April 24, 2012 New version 3.8
• September 13, 2012 New version 3.9
• September 27, 2012 New version 4.0
• October 10, 2012 New version 4.0.1
• December 07, 2012 New version 4.0.2
• January 04, 2013 New version 4.1
• January 05, 2013 Price increase: $3.99 -> $4.99
• January 08, 2013 Price decrease: $4.99 -> $3.99
• March 25, 2013 New version 4.2
• May 11, 2013 New version 4.2.5
• June 30, 2016 New version 5.0
• June 30, 2016 Price decrease: $3.99 -> FREE!
• July 10, 2016 New version 5.0.1