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iPhone 7 images
iPad 5 images
What’s New Version 6.0
Completely rewritten from scratch. New interface, ability to save multiple results, and ability to export results.
Description
Electrical Formulator: Your Complete Electrical Calculation Tool
Solve virtually any electrical design or engineering challenge with this powerful and intuitive electrical formulator. Packed with hundreds of conversion and calculation tools, it’s the most versatile utility in your toolkit. Save, print, or email your results. Easily access your most-used and recently used formulas. Every calculation is automatically saved for future reference.
Key Features:
• Instant access to over 100 professional-grade electrical formulas
• Save and organize your results for later reference
• Share results via email or print
• Highlights your most-used and recent formulas
• Designed for engineers, electricians, and energy professionals
Formula Categories:
Batteries
• Starting motor amperage
• Number of cells required
• Estimated operating time
Cost Calculations
• Appliance and lighting energy usage
• Estimated usage hours for new bulbs
• Insulation payback period
BTU Conversions
• BTU to joules, horsepower-hr, watt-hr, calories, foot-pounds, and more
Generator Calculations
• DC generator output
• Generator amperage and efficiency
Impedance & Reactance
• Resistance & reactance combinations
• Inductive and capacitive reactance
• Total impedance and parallel circuits
Kilowatts & Joules
• Convert kilowatts to BTU/hr, joules/sec, lumens, horsepower, megajoules/hr, and more
Motors
• Single- and three-phase motor calculations
• Locked rotor current
• Motor kVA (including multiple input scenarios)
• Motor speed analysis
Ohm’s Law
• Calculate for power, voltage, resistance, or current
Transformers
• Primary and secondary amperage
• Full-load transformer sizing (208V, 240V, 480V for single and three-phase)
• Impedance and amperage capacity calculations
Voltage Drop
• Copper and aluminum wire voltage drop (1-phase and 3-phase)
• US/Imperial and metric units supported
Wiring & Conduits
• Wire size and resistance (copper and aluminum)
• Wire length calculations
• Conduit sizing
Whether you’re working in the field, the lab, or the classroom, this electrical formulator helps you work faster, smarter, and with confidence.
Users are able to calculate twelve formulas for FREE. Purchase a subscription to calculate additional formulas. All subscriptions come with a 1-WEEK FREE TRIAL and SUPPORT Family Sharing.
In-App Purchases US pricing
One-Time Purchases
Pro Features For Electrcial$1.99
Capabilities
In-App Purchases
Accessibility
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Version history 25 versions
Build 822571135v6.02025-06-09 10:23:08
Completely rewritten from scratch. New interface, ability to save multiple results, and ability to export results.
Build 818056980v5.0.12016-07-07 23:02:34
This update from Apple will improve the functionality of this app. No new features are included.
Pro Bug Fix
Build 817622275v5.02016-06-27 22:43:28
Totally redone code. Basis for future growth. Redone UI. Ability to see underlying formulas if you unlock pro version
Build 15348857v4.2.52013-05-10 18:23:20
new charts
Build 14793496v4.22013-03-25 02:02:12
New Formula, small bug fixes
Build 13165122v4.12013-01-04 01:12:49
Electrical Charts, Links to download the latest Electrical Codes by State
Build 12739434v4.0.22012-12-06 18:46:15
bug fix
Build 11250248v4.0.12012-10-09 20:45:20
Critical Bug Fix
Build 11030966v4.02012-09-26 20:51:38
iPhone 5 Support
Build 10575542v3.92012-09-12 15:37:02
Over 35 new formulas in the voltage drop, bug fixes
Build 7552835v3.82012-04-23 20:45:52
New Motor Formulas. Support for iPad Retina
Build 4442962v3.72011-10-12 02:07:36
iOS 5 Compatibility
Build 4061023v3.62011-08-23 20:05:43
New Section with Power Demand formulas and charts
Build 3777265v3.52011-06-05 21:47:30
New Interface, Support for E Printing 400 new metric conversion formulas
Build 3619511v3.22011-04-20 22:16:36
Added additional metric formulas plus wring chart for EU, GB, Canada and Australia
Build 3498912v3.12011-03-15 03:09:31
New UPS calculations, Fixed Saved Calculation sync on iphone, formula tweeks
Build 3111820v3.012010-11-08 20:15:17
Critical upgrade to prevent crash on upgrades only
Build 3082942v3.02010-10-27 00:48:20
IF your iphone crashes on starting after upgrade delete the app and redownload a new version is on the way. iPad Native, new transformer formulas, totally redone conversion sections with over 100 new formulas. New area formulas
Build 2591244v2.92010-05-03 16:50:14
10 New Power Factor Conversions
fractions to decimals and metric
New Wring Calculation
Build 2348923v2.82010-02-11 22:22:11
Six new formulas
AWG inputs for Conduit Size
Conduit Offset formula
4 Motor Pulley Formulas
Build 2207075v2.72009-12-20 23:29:50
Section in Lighting that includes:Lighting Loads for both Metric and Imperial, Hours of Usage, Number of Fittings, Room Index,
Two new transformer formulas for secondary windings
New Conversion Square Measures Metric Conversion
In² to cent², Ft² to Mt²Acres to Hectors Acres to Square Kilometers and reverse of the above
Cubic conversion: Cubic Inches to Cubic Centimeters, Cubic Feet to Cubic Meters and Cubic Yards to Cubic Meters and the reverse of the above.
Build 2078607v2.62009-11-05 23:59:57
Four new formulas for Voltage Drop that allow entry of voltage drop in AWG
Four new formulas in Voltage Drop that allow entry in Millimeters
600 Volt Transformer Formula
Build 1991891v2.52009-09-29 20:48:31
45 Area Formulas on Rectangles, Pyramids,Squares,Cylinders,Circles, Cones, Ellipses and Parallelograms.
Six formulas in Direct-Current Permanent Motors.
Bug Correction in Kilometers and Kilo conversions.
Bug Fix for certain regions and decimal point entry.
Build 1899034v2.42009-08-19 22:10:55
New Motor Calculations for:
Full Load Torque
Starting Time
Energy to Overcome Inertia
Full Load Speed
Conversion from G to ft sec and back
Bug Fix In Recent
Better E-mail to support
Build 1817064v2.32009-07-08 21:58:27
Two Phase Four Wire Calculations for Amperes when HP is known, KW is known, KVA is known, Kilowatts and Kilovolts as well as Horsepower. Additional Impedance Calculation when Resistance and Reactance are known as well whe Inductive Reactance and Capacitive REactance are known.
Conversion Section Reintroduced.
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| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
US | en-US | Free | 1 | 5.0 | 6.0 |
Change log 28 changes · US
✎
releaseNotes updated
Completely rewritten from scratch. New interface, ability to save multiple results, and ability to export results.
✎
description updated
Electrical Formulator: Your Complete Electrical Calculation Tool
Solve virtually any electrical design or engineering challenge with this powerful and intuitiv
✎
name updated
Electrical Formulator
◆
Version 6.0 released
Completely rewritten from scratch. New interface, ability to save multiple results, and ability to export results.
◆
Version 5.0.1 released
This update from Apple will improve the functionality of this app. No new features are included.
Pro Bug Fix
◆
Version 5.0 released
Totally redone code. Basis for future growth. Redone UI. Ability to see underlying formulas if you unlock pro version
◆
Version 4.2.5 released
new charts
◆
Version 4.2 released
New Formula, small bug fixes
◆
Version 4.1 released
Electrical Charts, Links to download the latest Electrical Codes by State
◆
Version 4.0.2 released
bug fix
◆
Version 4.0.1 released
Critical Bug Fix
◆
Version 4.0 released
iPhone 5 Support
◆
Version 3.9 released
Over 35 new formulas in the voltage drop, bug fixes
◆
Version 3.8 released
New Motor Formulas. Support for iPad Retina
◆
Version 3.7 released
iOS 5 Compatibility
◆
Version 3.6 released
New Section with Power Demand formulas and charts
◆
Version 3.5 released
New Interface, Support for E Printing 400 new metric conversion formulas
◆
Version 3.2 released
Added additional metric formulas plus wring chart for EU, GB, Canada and Australia
◆
Version 3.1 released
New UPS calculations, Fixed Saved Calculation sync on iphone, formula tweeks
◆
Version 3.01 released
Critical upgrade to prevent crash on upgrades only
◆
Version 3.0 released
IF your iphone crashes on starting after upgrade delete the app and redownload a new version is on the way. iPad Native, new transformer formulas, totally redone conversion sections with over 100 new formulas. New area formulas
◆
Version 2.9 released
10 New Power Factor Conversions
fractions to decimals and metric
New Wring Calculation
◆
Version 2.8 released
Six new formulas
AWG inputs for Conduit Size
Conduit Offset formula
4 Motor Pulley Formulas
◆
Version 2.7 released
Section in Lighting that includes:Lighting Loads for both Metric and Imperial, Hours of Usage, Number of Fittings, Room Index,
Two new transformer formulas for secondary windings
New Conversion Square Measures Metric Conversion
In² to ce
◆
Version 2.6 released
Four new formulas for Voltage Drop that allow entry of voltage drop in AWG
Four new formulas in Voltage Drop that allow entry in Millimeters
600 Volt Transformer Formula
◆
Version 2.5 released
45 Area Formulas on Rectangles, Pyramids,Squares,Cylinders,Circles, Cones, Ellipses and Parallelograms.
Six formulas in Direct-Current Permanent Motors.
Bug Correction in Kilometers and Kilo conversions.
Bug Fix for certain regions and
◆
Version 2.4 released
New Motor Calculations for:
Full Load Torque
Starting Time
Energy to Overcome Inertia
Full Load Speed
Conversion from G to ft sec and back
Bug Fix In Recent
Better E-mail to support
◆
Version 2.3 released
Two Phase Four Wire Calculations for Amperes when HP is known, KW is known, KVA is known, Kilowatts and Kilovolts as well as Horsepower. Additional Impedance Calculation when Resistance and Reactance are known as well whe Inductive Reactan