SignalScale

Convert analog signals in both directions, save AI and AO channels, and share clear scaling charts as PDF or PNG.

SignalScale turns analog signals into measurement values and back. Set your signal and measurement ranges, enter a value, and see the result immediately.

SIGNAL PRESETS 4–20 mA, 0–20 mA, 0–10 V, 2–10 V, 0–5 V, 1–5 V and −10–10 V are built in. Use Custom range for other endpoints and units.

CONVERT IN BOTH DIRECTIONS Convert a measured signal into pressure, temperature, speed or another quantity. Switch direction to calculate the signal corresponding to a target measurement. Increasing and decreasing ranges are supported. Values outside the configured range are extrapolated and clearly marked.

SAVE ANALOG CHANNELS Keep multiple analog input (AI) and analog output (AO) configurations with individual names, ranges and units. Load a saved channel, update it or save a new copy.

VISUALIZE AND SHARE View the linear scaling curve and reference values at 0%, 25%, 50%, 75% and 100%. Export an English-language chart as a vector PDF or high-resolution PNG through the iOS share sheet.

OFFLINE CALCULATIONS Calculations and saved channels work offline. No account, ads or analytics. Calculator settings and channels are stored locally on your device.

Example: 4–20 mA mapped to 0–10 bar gives 5 bar at 12 mA.

SignalScale performs linear calculations using values you enter. It does not connect to instruments, measure electrical signals, diagnose sensor faults or perform square-root extraction.