Signal Scaler

4 – 20 mA Scaling Calculator

Only for iPhone

$0.99 · Designed for iPhone. Not verified for macOS.

iPhone

Quickly scale 4–20 mA signals, engineering units, percentages, differential pressure, and square-root flow. Signal Scaler is a fast, straightforward calculator for instrumentation technicians, controls professionals, electricians, and engineers working with 4–20 mA signals. Quickly convert between: • 4–20 mA signal values • Percentage of calibrated range • User-defined engineering units • Differential-pressure percentage • Square-root flow percentage Enter the transmitter’s lower and upper range values, then calculate the corresponding current, percentage, or engineering-unit value. Features include: • Linear 4–20 mA scaling • Differential-pressure-to-flow square-root calculations • Adjustable LRV and URV • User-defined engineering units • Quick selection of common 8, 12, and 16 mA values • Automatic limits for valid signal and percentage ranges • Simple interface designed for field use • No account required • Works offline Signal Scaler is intended as a convenient calculation aid. Always verify critical values using approved procedures and calibrated test equipment.

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The developer, BRENDAN DANIAL MCSHANE, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Accessibility

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    Information

    Seller
    • BRENDAN DANIAL MCSHANE
    Size
    • 1.1 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 15.6 or later.
    • iPhone
      Requires iOS 15.6 or later.
    • iPod touch
      Requires iOS 15.6 or later.
    • Mac
      Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Brendan McShane
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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