⚡ PLC Analog Scaling Calculator

Convert raw counts / 4–20 mA ↔ engineering units — the math every controls tech does daily.

1 · Set your ranges

2 · Raw → Engineering units

Scaled value
—
⚠ Raw value is outside the configured range — reading is extrapolated (check the signal).

3 · Engineering units → Raw

Raw count the PLC should read
—
⚠ Value is outside the configured EU range.

The formula (so you can do it in ladder)

If the reading's off, check the raw range, a swapped min/max, or the field device — not the math.