4–20mA Signal Scaling Calculator

Convert industrial 4-20mA analog signals to process values, engineering units, ADC counts, or percentage of span. Essential for PLC and SCADA commissioning.

4–20mA Signal Scaling

Solve For

Process Range – Low (4mA value)

Process Range – High (20mA value)

Process Value (Engineering Units)

Loop Current (mA)

Raw ADC Count

ADC Resolution (bits)

Results

Loop Current12.00 mA

Result:12.00 mA

Percentage of span:50.0%

Loop voltage (250Ω burden):3.00 V

ADC count (16-bit):32768

Status:Normal signal

FormulamA = 4 + (PV−LO)/(HI−LO) × 16

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