Apps Like Greenheck Toolbox for iPhone and iPad
Calculate fan laws and size ducts
Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.
Greenheck Toolbox screenshots
Ranked alternatives
Showing 161–180 of 1,000 ranked alternatives.
Ham Radio Toolbox
Nuno Facha
Tune bands and check propagation
Real-time propagation data provides solar and geomagnetic insights for QSO planning. DX cluster viewer displays active DX spots. Calculate antenna lengths and tune dipoles. Check frequency bands and propagation conditions.
Wisenet ToolBox
Hanwha Vision Co., Ltd
Organize surveillance system needs easily.
The app helps users select Hanwha Techwin products for their surveillance system. It includes tools to find products, calculate field of view, and estimate network bandwidth requirements for video settings.
Air Density Calculator
Tan Chia Ling
Calculate air , temperature, or pressure
Calculate air , temperature, or pressure with instant results. Copy calculations to other apps. Includes formulas for reference. Supports up to 16 decimal places and various units for each input.
Profit Calculator, Revenue
Phan Nhat Đang
Calculate with selling price and cost
Calculate by entering selling price and buying cost. Determine total , , and total cost based on quantity. Input data to generate financial results.
Ohm & Watt Law Electrical Calc
TrothMatrix OPC Private Limited
Calculate voltage, current, resistance, and power
Calculate Voltage, Current, Resistance, and Power using Ohm’s Law and ’s Law. Input values to solve for unknowns. Display results instantly. Includes formulas for calculations. Supports both direct and indirect circuit analysis.
IP Keypad Pro - Subnet Calc
Takahiro Furuya
Subnet calculator with dedicated keypad.
The app calculates network, host, and directed broadcast addresses. It features a dedicated keypad, pickers for subnet mask and prefix length, and a binary digit view.
AWG Calculator App
Melchisedec Martinez Rodriguez
Calculate wire size and NEC® standards
Perform electrical calculations including wire size, voltage drop, and conduit sizing. Customize material and temperature settings. Access NEC® 2023 tables, FAQs, and searchable articles. Calculate ampacity and use Ohm's Law.
Pipe Flow Liquid Pipe Diameter
Daxesoft Ltd
Calculate for rate and pressure loss
Calculate minimum internal based on rate and maximum pressure loss. Input elevation changes and select valves and fittings. Display Reynolds number and friction factor. Export results in various formats.
Calculator365: All-In-One Calc
晖明 甘
Calculate, edit, and track expressions
Advanced calculator with basic, scientific, and editable input features. View calculation history and use a widget for quick access.
Plumbing Formulator
Historycentral.com Inc
Professional calculator for plumbing and HVAC.
The app offers over 200 formulas and tools for plumbing, HVAC, and mechanical contractors. It includes calculators for water flow, piping, drainage, water heaters, pumps, gas, medical gas, pools, septic, and thermal expansion.
Piping Offset Calculator
Jean-Paul Lanaux
Calculate piping offset spool configurations easily.
The app calculates dimensions and cut lengths for piping offset spool configurations. It presents bend angles, tangents, cut lengths, rise, run, hypotenuse, miter angles, and arc lengths.
Keystone Pump TDH Calculator
Keystone Pumps LTD
Calculate slurry pump system head pressure.
The app assists engineers with slurry pipe and pump system calculations. It computes required head pressure and limiting settling velocity based on user-entered system parameters.
Wireline-Calcs
Vadim Fattakhov
Calculate tension, track depth, determine pressure balance,
Calculate maximum safe tension, determine wellhead pressure balance, and find keyseat location. Compute cable elongation and pull limits at depth. Adjust lengths for temperature changes.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.