General calculators

Tools every engineer reaches for: the unit converter, measurement uncertainty, quick statistics and reliability.

• Engineering unit converterConvert pressure, torque, power, flow, length, mass, speed, temperature, energy and marine units (knots, nautical miles, long tons) from one table.
• Measurement uncertainty (GUM)GUM uncertainty budget: Type A/B components, sensitivity coefficients, combined and expanded uncertainty with Welch–Satterthwaite degrees of freedom.
• Quick statistics of a seriesMean, standard deviation, confidence interval, quartiles, trend with significance and outliers (Tukey, Chauvenet, Grubbs) of a pasted series.
• Reliability and redundancyAvailability and mission reliability of series, parallel and k-out-of-n systems, and a Weibull fit of failure times by median-rank regression.