Calculate length and associated values for gable roofs. Input room width and ridge height to determine pitch, lengths, and ridge height. Use advanced options to enter pitch in radians, degrees, DMS, or rise/run.
by Armchair Engineering★ 4.5213 ratingsUtilities$1.99Data updated 2026-09-10
Calculate , base material, and sealcoat quantities for paving projects. Input dimensions in various units and receive results in tons, cubic yards, or cubic meters. Estimate material costs based on input measurements.
Convert to adjustable voice, pitch, and speed. Choose from multiple voices. Read from files, typed input, or scanned documents via camera. Edit before playback. Save and share audio outputs.
Calculate volume for slabs, footings, columns, walls, and stairs in cubic yards, feet, or meters. Estimate needed, determine weight and bag requirements. Calculate rebar spacing and truckloads.
Solve equations with addition, subtraction, multiplication, and division. View step-by-step working to understand solutions. Handle mixed and partial fractions. Convert between decimals and fractions. Find factors of numbers or common factors.
Calculate time values by adding, subtracting, and multiplying and . Input time values directly without converting to decimals. Display results in and format.
The app calculates properties for triangles, trapezoids, and circles. It accepts various input formats for angles and lengths, displaying results in the chosen format.
Allows users to perform calculations directly within compatible apps. Input equations using the . Dark Mode is supported. Full iPadOS compatibility is available. Customization options are provided.
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.
Calculate by entering speed and air temperature. Support units for air temperature including °C, °F, and Kelvin, and speed in mph, km/h, m/s, and knots. Include a temperature converter for unit conversion.
Measure angles with precision up to 0.02°. Use surface and auto-select features for accurate readings. Convert angles between degrees, grade, and roof pitch. Includes a ruler for actual size measurements. No advertisements.
Perform calculations with feet, inches, and fractional inches. Add, subtract, multiply, divide, and compute roots or powers. Scale drawings using the scaling feature. Convert and manage measurements directly within the .
Multiple images simultaneously with customizable pixel dimensions. Choose from four modes including fixed width, fixed height, maximum pixel, aspect fill, or aspect fit. Export resized images in selected formats.
Perform complex calculations with trigonometric, statistical, and combinatorial functions. Define and evaluate custom equations. Graph mathematical expressions and explore multiple variables. Save and reuse calculations for future use.
Convert across categories including length, area, mass, temperature, volume, density, and flow rates. Switch between like km to miles or Celsius to Fahrenheit. Calculate torque and viscosity values. Export results and share conversions directly.
The app allows users to enter and modify formulas while checking them, preventing errors. It provides a history of formulas and answers, supporting various number systems and memory functions for calculations.
The app calculates baluster spacing measurements for flat and rake handrails. It provides outputs such as the number of balusters, space between centers, and measurements for marking baluster centers.
Convert units across length, area, volume, angle, mass, pressure, and more. Check real-time currency exchange rates. Recalculate instantly with updated values. Save frequently used conversions for quick access.
Use maps and satellite imagery to locate and measure roofs for solar installations. Enter addresses or zip codes to find target roofs. Define roof boundaries and input pitch angles. Instantly calculate suitability for PV or thermal systems.