More than 15 calculation tools for process, instrumentation and functional safety. No account needed; every result can be shared by a link.
Electrical 6
Cable Sizing Calculator — IEC 60364
Find the minimum cable cross-section (mm²) given current, length, max allowed voltage drop, system type and conductor material.IEC 60364-5-52 Fuse / Breaker Sizing — IEC 60364
Recommended fuse or circuit breaker rating (A) given the load current and cable section, with cable capacity check (Iz) per IEC 60364-5-52.IEC 60364-4-43IEC 60364-5-52 Ohm's Law Calculator
Given any 2 of the 4 quantities (Voltage U, Current I, Resistance R, Power P), compute the other 2 instantly.Power Calculator (DC / AC mono / AC tri)
Compute active power P (W), reactive power Q (var), apparent power S (VA) for DC, single-phase AC and three-phase AC systems.Short-Circuit Current Calculator — IEC 60909
Compute prospective short-circuit currents (Ik3 max/min, Ik1 Ph-N, peak, thermal loading) at the end of a cable run per IEC 60909. Built-in 100–2500 kVA transformer library, parallel transformers and conductors.IEC 60909-0:2016IEC 60364-4-41 Voltage Drop Calculator — IEC 60364
Calculate voltage drop in a cable (DC, single-phase AC, three-phase AC) per IEC 60364-5-52, resistance AND reactance. Selectable 3/4/5 % limit, voltage at load, maximum admissible length.IEC 60364-5-52 Instrumentation 2
4-20 mA Loop Scaling Calculator
Convert between a 4-20 mA current signal and an engineering unit value (pressure, temperature, level, etc.). Bidirectional — leave either side empty to compute it.NAMUR NE 43 NAMUR Frequency Status (NE 43 Liquiphant)
Classify a tuning-fork (Liquiphant) frequency output as free, covered, or sensor failure per NAMUR NE 43.NAMUR NE 43 Process 4
Flow Rate Converter (m³/h ↔ L/min ↔ US gpm ↔ CFM)
Convert volumetric flow rate between m³/h, L/min, L/s, US gallons per minute, CFM and more — for water, gas, or any incompressible flow.Pressure Unit Converter (bar ↔ psi ↔ kPa ↔ mmHg ↔ atm)
Convert pressure values between bar, psi, kPa, MPa, mmHg, atm, mbar, inHg, inH2O — all common engineering units in one calculation.Temperature Converter (°C ↔ °F ↔ K ↔ °R)
Convert temperature between Celsius, Fahrenheit, Kelvin and Rankine — all in one calculation.Valve Sizing — Kv / Cv (liquids)
Compute the flow coefficient Kv (m³/h at 1 bar Δp) and Cv (US gpm at 1 psi Δp) for a control valve, given flow rate, pressure drop and specific gravity. Per IEC 60534 / ISA 75.IEC 60534-2-1ISA 75.01 Safety 4
ATEX / Ex Marking Decoder
Enter a full ATEX/Ex marking (e.g. II 2 G Ex db IIB T4 Gb) and get a line-by-line breakdown — equipment group, category, atmosphere, protection modes, gas group, temperature class, EPL — with an automatic category↔EPL coherence check.Directive 2014/34/EUIEC 60079-0 FIT ↔ MTBF Calculator
Convert between Failure In Time (FIT, failures per 10⁹ hours) and Mean Time Between Failures (MTBF) in hours and years.IEC 61508 PFD ↔ SIL Band Calculator (IEC 61508 / 61511)
Determine the achieved Safety Integrity Level (SIL 1-4) from a PFDavg value, per IEC 61508-1 Table 2 (Low Demand Mode). Also returns Risk Reduction Factor RRF.IEC 61508-1IEC 61511 RRF ↔ SIL Band Calculator
Determine the Safety Integrity Level (SIL 1-4) from a Risk Reduction Factor (RRF), per IEC 61508-1 / IEC 61511 (Low Demand Mode).IEC 61508-1IEC 61511 No tool matches.