Best +online Duculator Apps

4.7😐(1.6K ratings)

Free

This app provides HVAC technicians with instant access to product information, including warranty status, inventory, and technical specifications. It offers real-time support, order tracking, and helpful calculators to streamline job management and business growth.

What We Love

👍 Great customer service
🚀 Time-saving tool
📚 Helpful technical information
🔍 Useful inventory and pricing lookup

Room to Improve

🐛 App crashes and bugs
⏱️ Slow performance and loading times
🔍 Incomplete product information
💰 Pricing issues and lack of transparency

Unit Converter - Convert all by oWorld Software

Measurements & Calculations

Strong Contender

✈️ Travel

4.6😐(13K ratings)

FreeAdsIn-App Purchases

Unit Converter - Convert all screenshot 1

Unit Converter - Convert all screenshot 2

Unit Converter - Convert all screenshot 3

Unit Converter - Convert all screenshot 4

Unit Converter - Convert all screenshot 5

Unit Converter - Convert all screenshot 6

Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.

What We Love

🚀 Easy to use
🚀 Comprehensive unit conversions
👍 Helpful app
👍 Practical for engineering and mechanics
👍 Intuitive interface
👍 Extremely useful
👍 Convenient and always available

Room to Improve

🔍 Too many ads
🔍 Ads make the app unusable
🔍 Ads are invasive and disrupt user experience
💰 Expensive subscription for ad-free version
🐛 Crashes and stability issues
🔍 Ads block access to features

measureQuick HVAC by Manifold Cloud Services Ltd.

Connect. Perform. Prosper.

Worth Considering

Size Simple HVAC Duct Runs

5.0😐(5 ratings)

Free

This application helps HVAC technicians diagnose and repair systems quickly and accurately. It offers robust diagnostic tools to identify problems faster, leading to fewer callbacks and more satisfied customers. It supports various HVAC systems, making it an all-in-one solution for professionals.

What We Love

👍 Excellent diagnostic tool
🚀 Improves efficiency and standardization
💡 Elevates the HVAC industry
👍 Useful for both experienced and junior technicians
👍 Provides professional-looking reports
👍 Comprehensive and informative

Room to Improve

🐛 Frequent crashes and stability issues
🔒 Too much personal information required
💰 Overpriced, especially for the paid features
🔒 Restricting screenshot functionality behind a paywall
🔍 Overly complicated user interface

More +online Duculator apps to explore

SMACNA Duct-U-Lator

Rectangular, round, and oval duct sizingReal-time calculation updatesConverts duct shapes and sizes

This tool simplifies HVAC duct sizing for professionals. It quickly calculates dimensions for rectangular, round, and oval ducts based on airflow, friction loss, and velocity, ensuring optimal ventilation system performance.

Calculator | Welding & Piping

Advanced measurement calculationsFluid dynamics and pressure analysisComprehensive pipe data access

This app provides advanced calculation tools and comprehensive data for pipe trade professionals. It streamlines workflows for pipefitters, welders, and steamfitters with features for measurements, fluid dynamics, and material specifications. Designed for efficiency and accuracy, it works offline for on-site use.

(4.3K)

Ductulator - Duct Calculator

HVAC Airflow Sizing & Design

Duct sizing for round, rectangular, and flexible ductsFittings pressure drop calculationPsychrometric analysis with interactive chart

This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.

(32)

Ref Tools

All-in-one HVACR app

Refrigerant Slider for P/T calculationsSolenoid valve coil testing toolRefrigeration system troubleshooting guide

This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.

This app provides HVAC/R professionals with on-the-go access to product information and essential tools. It features real-time order tracking, a duct calculator, warranty verification, and branch location details. Users can also search for parts, view technical documents, and receive special offer notifications.

Real-time order statusDuct calculatorProduct availability and pricing

Sporty's E6B Flight Computer

(587)

ad-supported

Calculator for pilots

$9.99

This aviation calculator app offers 27 functions for navigation, fuel calculations, and conversions. It includes a versatile timer for tracking multiple time zones and performing countdowns with alerts. Designed for pilots, it simplifies complex flight planning and in-flight computations.

27 Aviation Functions22 Aviation ConversionsNavigational Calculations

🗺️ Navigation

(5.3K)

paid

Race Stats: Speedo and G Force

Speedometer 1/4 0-60 0-100

GPS speed trackingReal-time G-force measurement0-60 mph / 0-100 km/h timer

Track your vehicle's performance with real-time GPS speed and G-force readings. Measure acceleration from 0-60 mph or 0-100 km/h, and time your 1/4 mile or 400m runs. Simulate drag races and analyze your car's capabilities to improve driving speed.

HVAC Duct Design Calculator

(634)

ad-supported

Ductulator - Duct Sizing

$3.99

Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.

Instant duct sizingFriction rate or velocity calculationMultiple valid duct dimensions

Electrical Conduit Bender

Advanced fractional calculationsImperial and metric unit conversionSupport for numerous bend types

$9.99 | 100% OFF

This app simplifies electrical conduit bending calculations with expert-designed tools. It offers advanced fractional and unit conversion capabilities, supporting a wide range of bend types for precise results. Easily switch between imperial and metric units and choose from predefined benders.

(580)

Determine refrigerant data

BITZER REFRIGERANT RULER

Refrigerant data lookupTemperature-to-pressure conversionMetric and imperial unit support

This tool quickly determines refrigerant data, including properties, safety groups, GWP, and ODP. It offers intuitive temperature-to-pressure conversion and supports both metric and imperial units. Access detailed information and links to online resources for over 100 refrigerants.

Ductulator Duct Calculator

Duct sizing calculatorEqual Friction MethodVelocity Method

This utility app calculates duct dimensions and air velocity using two methods: Equal Friction and Velocity. It supports both round and rectangular ducts, offering precise calculations for HVAC professionals. Offline functionality is available with a subscription.

(20)

EPA 608 Practice Test 2026

HVAC Certification Exam Prep

500+ practice questionsSmart analyticsOffline access

Prepare for your EPA 608 HVAC certification with over 500 practice questions and smart analytics. This app offers offline access, topic-based study, mock tests, and personalized plans to help you pass on your first attempt.

📚 Education

(2.6K)

Waterspeed: Track Watersports

Wing Sail Windsurf SUP Kayak

Track 30+ water sports sessionsAnalyze speed, distance, wind, and performance metricsLog gear and equipment usage

Track your performance across over 30 water sports, including sailing, wingfoiling, and kayaking. Analyze speed, distance, wind, and more to understand your progress and improve your skills. Plan your sessions with integrated forecasts and stay safe with live tracking.

with Formula Calculators

$0.99

This app provides a comprehensive collection of over 120 physics formulas across various topics like mechanics, relativity, and thermodynamics. It includes a search function, unit conversions, and physics constants, with many formulas featuring integrated calculators for easy problem-solving.

120+ physics formulasMechanics, relativity, thermodynamics coverageSearch function for formulas

📚 Education

(8)

paid

McCalc Fusion Calculator

HDPE/PP Pressure Calculator

Select McElroy fusion machinesChoose from nine international standardsEnter pipe size in multiple units

This app calculates the correct fusion pressure for HDPE and Polypropylene pipe jobs. It simplifies the process by selecting your fusion machine and entering pipe details to determine the recommended theoretical gauge pressure.

💼 Business

(18)

free

Water Flow Calculators

by Waterous