Instrument Technician Toolbox

Free Calculators for Field and Calibration Work

Practical process and calibration tools built for technicians—available immediately, with no account or download required.

Five free calibration tools

Calibration Suite Tools

No account, download, or installation is required. Each calculator runs directly in the browser and is sized for field laptops, tablets, and phones.

4–20

Signal & conversion

Scale 4–20 mA signals, calculate square-root flow, and convert pressure, temperature, flow, and hydrostatic level units.

RTD

Temperature sensors

Convert temperature, RTD resistance, thermocouple millivolts, and cold-junction compensation values.

Calibration results

Compare As-Found and As-Left readings, calculate error, and evaluate the final result against tolerance.

VOL

Level & capacity

Calculate capacity, liquid volume, remaining volume, and percent full for common tank shapes.

Switch verification

Evaluate trip point, reset point, switch direction, deadband, tolerance, and pass or fail status.

From calculation to calibration record

Calibration Suite keeps customers, jobs, instruments, readings, tolerances, reports, and history connected in one Windows application.