About Architect's Formulator
ARCHITECT'S FORMULATOR is the ultimate professional calculator for architects, engineers, and construction professionals - with over 2,000 formulas in a single app. Whether you're sizing beams, designing HVAC systems,...
ARCHITECT'S FORMULATOR is the ultimate professional calculator for architects, engineers, and construction professionals - with over 2,000 formulas in a single app. Whether you're sizing beams, designing HVAC systems, calculating voltage drops, or checking ADA compliance, Architect's Formulator covers every discipline - structural, electrical, mechanical, plumbing, and carpentry - plus unit conversions, reference tables, and ADA accessibility resources. ARCHITECTURE & STRUCTURAL - 29 categories covering beam loads across single through four continuous spans, concrete design, flat plate analysis, steel design, masonry, environmental loads (wind, snow, seismic), foundation and retaining walls, wood design, acoustic absorption, 100+ material weights, fire egress, roof drainage, solar/daylighting, thermal performance, site grading, cost estimating, and more. ELECTRICAL - 15 categories for AC/DC circuits, Ohm's Law, motors, transformers, voltage drop, wiring/conduit sizing, batteries, impedance, power demand, lighting design, UPS sizing, and operating costs. CARPENTRY - 8 categories for lumber, stairs, safe beam loads, wall loads, roofing (shed, gable, hip), railing/deck framing, crown molding, and materials estimation for drywall, concrete, paint, and plywood. PLUMBING & HVAC - 29 categories covering pipe sizing, water flow, pumps, boilers, and a comprehensive HVAC library including airside/waterside heat transfer, duct sizing, fan and pump laws, gas laws, psychrometrics, refrigeration, heating/cooling load design, energy content for 16 fuel types, ventilation rates per ASHRAE 62.1, and steam/hydronic systems. CONVERSIONS - 17 categories with 500+ conversions for pressures, flows, BTU, horsepower, watts, frequency, linear/liquid/square/cubic measures, weights, and a Metric library with 280+ conversions across length, area, volume, mass, energy, power, and more. TEMPERATURE SCALES - Convert between all 8 scales: Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Newton, Delisle, and Rømer. REFERENCE TABLES - IBC Occupancy Loads, Brick Sizes, Lumber Dimensions, AWG Wire Gauge, Concrete Mix Ratios, and Insulation R-Values. ADA REFERENCE - 50 illustrated diagrams for wheelchair clearances, ramps, grab bars, elevators, accessible parking, and restroom layouts, plus 17 PDF documents with full ADA guidelines. FEATURES: . Over 2,000 professional formulas . US and Metric units with one-tap switching . Save and export calculations . Favorite your most-used calculators . One-time premium upgrade - no subscriptions From foundation to finish, every formula for every phase of the job.
Version History Minor bug fixes 5.02 Mar 22 Bug fixes 5.01 Mar 16 Totally rewritten code base. Hundreds of additional formulas ability to save multiple results 5.0 Feb 27 Additional sections on soil, frequency, and piping 3.9 07/31/2013 Additional formulas, new electrical charts 3.8 05/13/2013 iOS compatibility 3.7 10/11/2011 Over 60 new metric formulas New section on Fire Door requirements 3.6 09/12/2011 New Interface,support for printing, New section for masonry calculations, Over 500 new metric formulas 3.5 06/11/2011 Fixed critical bug with crash on update 3.01 11/08/2010 If app crashes on update delete app and reinstall- fix waiting for Apple approval. iPad Native- Redone beam section with over 100 new formulas Redone Conversion section with over 100 new conversion formulas 3.0 09/21/2010 12 New Beam Formulas Completely redone conversion sections with additional 12 power conversions as well as fractions to decimals and mm New Wring Calculation New formula to calculate rainwater requirement of roof drain Metric formulas for water flow 2.8 05/26/2010 12 New Beam formulas for 4 pt and 5pt beams 3 New Conversion Formulas Six new Electrical formulas AWG inputs for Conduit Size Conduit Offset formula 4 Motor Pulley Formulas Plumbing: Darcy Weisbach Friction Loss Method Carpentry: New section on max weight on beams and joist Includes Moment of Inertia, Deflection Due to Load,Max Load on Beams and Beam Size 2.7 02/26/2010 New Live Load Calculation in both US and Metric New Formulas for Web Stiffeners. Bolt Tensile Capacity, Allowable Shear Load and Allowable Bearing Load 12 New Road Calculations Structural Number, Spiral Curve Minimums, Culvert Seam Strength, Circular Curve Formulas and Parabolic Curve Formulas 12 New Beam Formulas for 3 Point and 4 Point loads 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 Volte Transformer Formulas 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. 2.6 12/11/2009 12 New Beam Formulas Single and Dual Point Loads with fixed and non fixed supports Volume of Right Circular Cone Lateral Surface Area of Fustrum of Right Circular Cone Area of Sphere Area of Spherical Lune Volume of Spherical Wedge Volume of Spherical Sector Six formulas in Direct-Current Permanent Motors. Total Fall of Pipe 45 degree offset 8 Formulas for Centrifugal Pumps 2.5 10/30/2009 New Shear Sections horizontal and vertical shear New Plate formulas Unit Tensile Stress and Maximum Deflection for Square Plates Rectangle Plates Round Plates Each for rigid and flexible supported Water Drainage Calculation New Motor Calculations for: Full Load Torque Starting Time Energy to Overcome Inertia Full Load Speed Conversion from G to ft sec and back New Area Formula's Including Area of Cylinder Base Length of Cylinder Diameter of Circle Area of Ellipse Area of Hexagon Area of Parallelogram Metric formula for stair rise Centrifugal Pumps: Pipe Velocity Water Horsepower Brake Horsepower-pump Efficiency of Pump Brake Horsepower of Motor Pressure Head Feet Water Flow- Metric Calculation Bug fix for conversion of Kilometers and Kilo Regional Fix For Brazil 2.4 09/21/2009 Additional Formulas on the weight of materials. 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. New Water Heater Formulas: Natural Gas BTU input, Gallons Per Hour for Gas, Average Daily Hot Water Use 20 BTU Conversion Formulas Metric Version of Pipe Needed and Liters Used New Formulas for Roof Sheathing Shed Roofs Gable Roofs Hip Roofs New Beam Formulas For Two, Three and Four Spans Bug fix for saved formulas Better E-Mail info to support 2.3 08/03/2009 Acoustic formulas including Acoustic absorption factor, room absorption, reverberation time. Boiler calculations. New roofing formulas Including formulas for length of roof rafters, areas of shed roofs, gable roofs and hip roof on square buildings. New formulas on Vapor Diffusion, Vapor Resistance and Water Drainage. New formula for Fiber Optic Bandwidth, new section on batteries to calculate size, number of cells and operating time. New piping formulas to calculate pipe length changes, pipe gate valves, pipe chase width and depth and formula to calculate supply rate from a well. Formulas on the weight of materials. Beam design formulas Additional formulas on Area section include formulas for square and rectangles as well as formulas for cones. Major Bug Fix allowing easy access to last item in scroll group. 2.2 06/27/2009 2.1 05/12/2009 1.0 04/08/2009
Previous Versions
Here you can find the changelog of Architect's Formulator since it was posted on our website on 2016-10-18 19:06:27.
The latest version is 5.02 and it was updated on 2026-06-25 02:27:32. See below the changes in each version.
Architect's Formulator version 5.02
Updated At: 2026-06-25
Changes: Version History Minor bug fixes 5.02 Mar 22 Bug fixes 5.01 Mar 16 Totally rewritten code base. Hundreds of additional formulas ability to save multiple results 5.0 Feb 27 Additional sections on soil, frequency, and piping 3.9 07/31/2013 Additional formulas, new electrical charts 3.8 05/13/2013 iOS compatibility 3.7 10/11/2011 Over 60 new metric formulas
New section on Fire Door requirements 3.6 09/12/2011 New Interface,support for printing, New section for masonry calculations, Over 500 new metric formulas 3.5 06/11/2011 Fixed critical bug with crash on update 3.01 11/08/2010 If app crashes on update delete app and reinstall- fix waiting for Apple approval. iPad Native- Redone beam section with over 100 new formulas
Redone Conversion section with over 100 new conversion formulas 3.0 09/21/2010 12 New Beam Formulas
Completely redone conversion sections with additional 12 power conversions as well as fractions to decimals and mm
New Wring Calculation
New formula to calculate rainwater requirement of roof drain
Metric formulas for water flow 2.8 05/26/2010 12 New Beam formulas for 4 pt and 5pt beams
3 New Conversion Formulas
Six new Electrical formulas
AWG inputs for Conduit Size
Conduit Offset formula
4 Motor Pulley Formulas
Plumbing: Darcy Weisbach Friction Loss Method
Carpentry: New section on max weight on beams and joist
Includes Moment of Inertia, Deflection Due to Load,Max Load on Beams and Beam Size 2.7 02/26/2010 New Live Load Calculation in both US and Metric
New Formulas for Web Stiffeners. Bolt Tensile Capacity, Allowable Shear Load and Allowable Bearing Load
12 New Road Calculations Structural Number, Spiral Curve Minimums, Culvert Seam Strength, Circular Curve Formulas and Parabolic Curve Formulas
12 New Beam Formulas for 3 Point and 4 Point loads
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 Volte Transformer Formulas
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. 2.6 12/11/2009 12 New Beam Formulas
Single and Dual Point Loads with fixed and non fixed supports
Volume of Right Circular Cone
Lateral Surface Area of Fustrum of Right Circular Cone
Area of Sphere
Area of Spherical Lune
Volume of Spherical Wedge
Volume of Spherical Sector
Six formulas in Direct-Current Permanent Motors.
Total Fall of Pipe
45 degree offset
8 Formulas for Centrifugal Pumps 2.5 10/30/2009 New Shear Sections horizontal and vertical shear
New Plate formulas Unit Tensile Stress and Maximum Deflection for
Square Plates
Rectangle Plates
Round Plates
Each for rigid and flexible supported
Water Drainage Calculation
New Motor Calculations for:
Full Load Torque
Starting Time
Energy to Overcome Inertia
Full Load Speed
Conversion from G to ft sec and back
New Area Formula's Including
Area of Cylinder Base
Length of Cylinder
Diameter of Circle
Area of Ellipse
Area of Hexagon
Area of Parallelogram
Metric formula for stair rise
Centrifugal Pumps:
Pipe Velocity
Water Horsepower
Brake Horsepower-pump
Efficiency of Pump
Brake Horsepower of Motor
Pressure
Head Feet
Water Flow- Metric Calculation
Bug fix for conversion of Kilometers and Kilo
Regional Fix For Brazil 2.4 09/21/2009 Additional Formulas on the weight of materials.
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.
New Water Heater Formulas:
Natural Gas BTU input, Gallons Per Hour for Gas, Average Daily Hot Water Use
20 BTU Conversion Formulas
Metric Version of Pipe Needed and Liters Used
New Formulas for Roof Sheathing
Shed Roofs
Gable Roofs
Hip Roofs
New Beam Formulas For Two, Three and Four Spans
Bug fix for saved formulas
Better E-Mail info to support 2.3 08/03/2009 Acoustic formulas including Acoustic absorption factor, room absorption, reverberation time. Boiler calculations.
New roofing formulas Including formulas for length of roof rafters, areas of shed roofs, gable roofs and hip roof on square buildings.
New formulas on Vapor Diffusion, Vapor Resistance and Water Drainage.
New formula for Fiber Optic Bandwidth, new section on batteries to calculate size, number of cells and operating time.
New piping formulas to calculate pipe length changes, pipe gate valves, pipe chase width and depth and formula to calculate supply rate from a well.
Formulas on the weight of materials.
Beam design formulas
Additional formulas on Area section include formulas for square and rectangles as well as formulas for cones.
Major Bug Fix allowing easy access to last item in scroll group. 2.2 06/27/2009 2.1 05/12/2009 1.0 04/08/2009
Architect's Formulator version 5.02
Updated At: 2026-03-22
Changes: Minor bug fixes
Architect's Formulator version 3.9
Updated At: 2009-04-08