DuctSizeCalc app icon

Apps Like DuctSizeCalc for iPhone and iPad

Calculate air conditioning duct sizes easily.

The app calculates duct sizes for air conditioning using the constant-pressure method. Users input wind amounts to determine duct size, disadvantageous pressure, and wind velocity for blueprints and drawings.

by Technical Data Service Co.,Ltd.★ 2.01 ratingsProductivity$2.99Data updated 2026-09-22

DuctSizeCalc screenshots

Ranked alternatives

Showing 1–20 of 1,000 ranked alternatives.

  1. Ductulator - Duct Sizing app icon

    Ductulator - Duct Sizing

    Wassim Murr

    Size ducts by friction rate or velocity

    Calculate sizes for rectangular and circular ducts by inputting maximum friction rate or velocity. Switch between calculation methods by tapping values. Convert between I-P and S-I units using a toggle switch. Export results for reference.

    ★ 4.7353 ratingsProductivity$3.99Data updated 2026-10-24
  2. Ductulate HD app icon

    Ductulate HD

    Steven Ramsay

    Calculate air flow and duct sizes

    Calculates air volume, pressure loss, velocity, and duct size for rectangular or round ducts. Supports both imperial and metric units. Users input values to determine required dimensions and system performance.

    ★ 4.824 ratingsUtilities$7.99Data updated 2026-09-08
  3. AirDiffuser app icon

    AirDiffuser

    Technical Data Service Co.,Ltd.

    Select air diffusers for facilities.

    The app selects air ceiling diffusers for air conditioning. It calculates apparatus size and wind velocity based on wind amount input, supporting various diffuser types and adjustable parameters for site or meeting use.

    ★ 1.01 ratingsProductivity$2.99Data updated 2026-09-20
  1. Greenheck Toolbox app icon

    Greenheck Toolbox

    Greenheck Fan Corporation

    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.

    ★ 3.03 ratingsUtilitiesFreeData updated 2026-09-08
  2. APP-DTI app icon

    APP-DTI

    EFRAIN LOPEZ NUNEZ

    Calculate duct size and pressure drop

    Calculate duct diameter based on airflow velocity. Perform CFD analysis for fluid dynamics. Estimate pressure drop across duct systems. Generate reports with detailed calculations. Export results for documentation.

    ★ 0.00 ratingsEducationFreeData updated 2026-09-06
  3. Thermaflex Duct Calculator app icon

    Thermaflex Duct Calculator

    Gastite Products LLC

    Calculate Thermaflex duct size easily.

    The app calculates the smallest Thermaflex duct size for HVAC installations. Users input project volume and friction loss to determine system velocity and the appropriate duct size.

    ★ 2.01 ratingsUtilitiesFreeData updated 2026-10-17
  4. WinFab - Sheet Metal Ductulator app icon

    WinFab - Sheet Metal Ductulator

    pasquale dipaola

    Calculate duct sizes and dimensions

    Calculate duct sizes based on airflow requirements and space constraints. Input dimensions and airflow rates. Generate reports with material estimates and installation guidelines. Export data for sharing or record-keeping.

    ★ 4.86 ratingsBusiness$3.99Data updated 2026-10-24
  5. Duct Calculator Elite app icon

    Duct Calculator Elite

    Cyberprodigy LLC

    Calculate size, velocity, and pressure drop

    ™ lets users input airflow, velocity, or friction to determine size. Calculate pressure drop and flow rate. Input dimensions for custom shapes. Export results and save calculations.

    ★ 4.8234 ratingsUtilities$9.99Data updated 2026-10-07
  6. HVAC Duct Size Calculator app icon

    HVAC Duct Size Calculator

    Alan Cave

    HVAC duct sizing for professionals.

    The app calculates duct sizes for HVAC design professionals. It provides a list of even sized ducts that meet design criteria, allowing users to review options at various aspect ratios.

    ★ 5.01 ratingsUtilities$0.99Data updated 2026-09-30
  7. Air Flow Conversion Calculator app icon

    Air Flow Conversion Calculator

    Tan Chia Ling

    Calculate airflow rate instantly

    Calculate airflow displacement by inputting velocity or volume. Select duct type and dimensions with unit options. Instantly display results in preferred units including fl/min, m/s, and ft3/min.

    ★ 3.511 ratingsUtilities$2.99Data updated 2026-09-14
  8. Digiduct app icon

    Digiduct

    Syska Hennessy Group, Inc.

    Calculate ducts, verify designs, track results

    Perform duct design calculations for rectangular, round, and flat oval shapes. Input dimensions and system parameters for accurate sizing. Verify calculations in real-time during field work. Sync with ASHRAE standards for reliable results.

    ★ 5.010 ratingsUtilitiesFreeData updated 2026-09-06
  9. Duct-Fit app icon

    Duct-Fit

    Izumi Consulting,Inc.

    Select duct sizes intuitively and simply.

    The app calculates appropriate duct sizes based on airflow, static pressure, and air velocity. It displays selected duct shapes graphically and supports both rectangular and round ducts.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-10-22
  10. DALC app icon

    DALC

    SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.

    Estimate ductwork air leakage easily.

    The app estimates air leakage from ductwork for engineers, architects, designers, and contractors. It determines pass/fail marks for Duct Air Leakage Tests and combines ductwork sections to calculate total allowable leakage.

    ★ 2.127 ratingsBusinessFreeData updated 2026-09-18
  11. Duct Calculator app icon

    Duct Calculator

    Pheinex, LLC

    Calculate size and performance

    Calculate size for round or rectangular ductwork. Adjust airflow, diameter, width, or height using sliders. Enter values directly for precise measurements. Lock friction calculations for accurate results.

    ★ 4.5189 ratingsUtilities$19.99Data updated 2026-09-10

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.