Southwire® Voltage Drop Calc
Southwire Company
Calculate and wire size
Calculate for a specific conductor run or determine wire size based on and current carrying capacity. Limits wire size to and NEC ampacity. Supports AWG and KCMIL sizes only.
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Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.
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.
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.
SubPrinta - Sublimation Design
Blue Sodium Corp
, print, and heat press projects
Create custom prints for projects. Import designs from Etsy or Canva or use templates for tumblers, tees, hoodies, and mason jars. Adjust sizes and print directly for use.
Ring Sizer: AR Ruler & Table
Tolganai Askarova
Measure size with AR camera
Measure size using camera with AR technology or place on screen within a designated circle. View diameter and size results. Save measurements for future reference.
ElectriCalc Pro
Calculated Industries, Inc.
Calculate and document electrical work safely
Perform electrical calculations for contractors, designers, and electricians. Calculate load, voltage drop, conduit fill, and panel sizing. Verify compliance with NEC® codes from 1996 to 2023. Store and retrieve past calculations.
Bradford White FOR THE PRO®
Bradford White Corporation
Scan barcodes, check warranties, search products
Contractors can scan product barcodes to access technical documents and warranty information. Search model numbers for spec sheets, parts lists, and product details. Access sizing tools and other resources directly through the .
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.
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