Duct Calculator - DuctCalc
Duct Calculator - DuctCalc Summary
Duct Calculator - DuctCalc is a with in-app purchases iOS app in Tools by Mikhail Nikitin. Released in Jan 2026 (3 months ago). It has 11 ratings with a 4.45★ (good) average. Based on AppGoblin estimates, it reaches roughly 131 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Jan 8, 2026.
Recent activity: 1.00 new ratings this week View trends →
Store info: Last updated on App Store on Jan 8, 2026 .
4.45★
Ratings: 11
Screenshots
App Description
Professional HVAC duct sizing and psychrometric calculations in one powerful app. DuctCalc replaces your physical ductulator with a modern, accurate digital tool trusted by engineers, contractors, and HVAC professionals.
DUCT SIZING CALCULATOR
Size round, rectangular, and flexible ductwork with ASHRAE-compliant calculations:
• Forward Mode: Enter CFM airflow → Get multiple duct size options with velocity, friction loss, and pressure drop for each
• Reverse Mode: Select a duct size → See CFM capacity at minimum, ideal, and maximum velocities
Supports 6 duct materials:
- Galvanized Steel
- Flex Duct (extended & compressed)
- Duct Board
- Fiberglass Lined
- PVC/Plastic
FITTINGS & PRESSURE DROP
Calculate total equivalent length and pressure loss with 10+ standard fittings:
- 90° and 45° Elbows (smooth, 3-piece, mitered)
- Tees (branch and straight-through)
- Reducers and Transitions
- Takeoffs (90° and 45°)
- Register Boots
PSYCHROMETRIC CALCULATOR
Complete humid air property analysis with interactive chart:
• 4 Input Modes: Dry bulb + wet bulb, relative humidity, dew point, or humidity ratio
• Calculates: Enthalpy, specific volume, vapor pressure, saturation pressure, degree of saturation
• Altitude correction for non-standard atmospheric pressure
• Visual psychrometric chart showing current state point
APPLICATION TYPES
Pre-configured velocity limits per ASHRAE/ACCA guidelines:
- Residential Supply (400-1000 FPM)
- Residential Return (300-800 FPM)
- Commercial Low Velocity (600-1500 FPM)
- Commercial High Velocity (1000-2500 FPM)
PROFESSIONAL FEATURES
Imperial (I-P) and Metric (SI) units
Airflow in CFM, m³/h, or L/s
Color-coded status indicators
Real-time validation warnings
Built-in reference documentation
Standard duct size tables (ASHRAE/SMACNA)
WHY DUCTCALC?
Unlike other apps that only size ducts OR calculate psychrometrics, DuctCalc combines both essential HVAC tools. No more switching between apps. Professional-grade accuracy in your pocket.
Perfect for:
• HVAC Engineers
• Mechanical Contractors
• MEP Design Firms
• HVAC Technicians
• Building Inspectors
• Engineering Students
Download DuctCalc and replace your old ductulator with the modern HVAC calculator trusted by professionals.
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