Calculator Big Buttons
Adalgisa Raniolo
Calculate with big and small size
A lightweight with large and simple interface. Perform basic calculations and copy results to clipboard. Offers five customizable skins for different visual preferences.
Apps Like OhmPro for iPhone and iPad
Calculate voltage, current, and resistance
Calculate electrical values using Ohm’s Law and related formulas. Input voltage, current, or resistance to determine missing variables. Access circuit diagrams and safety guidelines. Convert units between volts, amps, and ohms.
Ranked alternatives
Showing 241–260 of 1,000 ranked alternatives.
Wireline-Calcs
Vadim Fattakhov
Calculate tension, track depth, determine pressure balance,
Calculate maximum safe tension, determine wellhead pressure balance, and find keyseat location. Compute cable elongation and pull limits at depth. Adjust lengths for temperature changes.
Deck Help
Armchair Engineering
Calculate dimensions and material needs
Calculate decking material needs by inputting dimensions. Determine bearer and joist lengths. Adjust measurements in mm, cm, inches, or feet. Choose decimal precision for accurate results.
Homans HVAC Pro+
Watsco, Inc.
Track orders and access product tools
Access product information and tools for professionals. View real-time order status. Use a duct calculator to determine size, material, and specifications. Sign in to manage account, prices, cart, and orders.
Fan Law Calculator
Pheinex, LLC
Calculate fan performance changes
Calculate performance changes based on airflow, rpm, pressure, and current. Input values to get real-time updates. Adjust variables to estimate new system performance metrics.
Construction Calculator -
TERMUX LIMITED LIABILITY COMPANY
Calculate materials, estimate costs, track progress
Calculate concrete volume with precise formulas and unit conversions. Estimate material quantities for walls, slabs, and foundations. Measure dimensions and convert units. Generate reports and save calculations for future projects.
dB Calculator
Rohde & Schwarz GmbH & Co. KG
Calculate dBm and voltage levels
Calculate power levels in dBm and watt with addition and subtraction. Convert between dBm, dBW, mW, W, mV, V, dBV, dBµV, and dBu. Adjust for impedance. Perform voltage calculations for correlated and uncorrelated values.
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.
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.
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