Electrical Formulator app for iPhone and iPad

4.0 ( 1600 ratings )

Reference Productivity
Developer: Multieducator Inc

Free

Current version: 5.0.1, last update: 7 years ago
First release : 13 Dec 2008
App size: 45.43 Mb

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
Ohms 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
OHMS 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

Pros and cons of Electrical Formulator app for iPhone and iPad

Electrical Formulator app good for

Giving credit where credit is due. Had problems with Pro version, contacted author, very professional. Had resolved in less than 12 hours. Hows that for dedication to your creation. Very informative for any level electrical reference and calculation. Thanks for being helpful after the sale.

I bought this program to use for my Electronics classes. Found that this program tends to round to the nearest whole number versus giving exact calculations. E.g. What should be displayed 0.81 Watts turns to 1 Watts as the answer. I guess if used in real world settings this program would be useful.

This app has been a huge help, and will continue to be an invaluable reference for me. Ive used it extensively during my Electrical and Instrumentation apprenticeship.

Some bad moments

Decent app, the conduit fills need to be in actual connduit sizes though , either in mm or the metric designator I done want to see that unwed .39in squared size tubing for a 8/3 conductor

I have purchased thus app but I cant get the app to open. I have an iPhone, the app used to work but stopped working. Anyone any solutions???

Break downs on just a few of the formulas and the rest just plug in the figures & we dont show how we got our questionable answers . . . Needs lots of work & their two "kva" formulas arent of practical use . . . Theres a plethera of more important kva formulas out there & this app has none of them

I was excited about this app until I bought it. The format is boring and not user friendly. For example; instead of a list like DC amps, AC amps, amps 1 phase, amps 3 phase etc., have an amps tab then we can choose between dc or ac then we can choose between 1 or 3 phase etc. This would eliminate the very long list of formulas (if these are even accurate formulas). I tried several and got no solid info that I could use or trust. Very disappointed!!!

Some of the formulas do not even produce correct results. I was showing the cost of using an appliance calculator to a customer, to help them understand their electric bills - and looked like a complete idiot with the results the App was giving me. The results there are incredibly inaccurate. How could this App have 3 stars as a average!?! Who is using this App? Obviously not qualified electricians, because they should know that some of it is not producing correct results. Total crap. Dont waste your money! How do I get my money back!

Complete garbage! I read the description and thought this is exactly what I need, what a load of crap!!!! I hope the developers read these comments.

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