Engineering calculators and selectors
UPS and battery backup sizer
From the load and the backup time to the UPS rating and the battery capacity in ampere-hours, allowing for short-discharge losses, ageing and Saudi heat.
Rule of thumbUPS kVA ≥ load ÷ power factor + 25 %. Runtime comes from battery Ah; heat shortens battery life.
Find matching parts
Ask an engineerGuidance only. Final selection depends on the applicable standard, the site conditions and the equipment data. Our engineers confirm every selection with your quotation.Ask an engineer
More calculators
CalculatorCable size and voltage drop calculatorFind the cable cross-section for a load, run length and installation, checked for current capacity at Saudi ambient temperatures and for voltage drop.Open calculator →
SelectorMotor protection and starter selectorEnter the motor power and supply voltage to get the full-load current, the motor protection breaker setting range, the contactor size, the cable and the starting method.Choose →
SelectorCircuit breaker size selectorFrom the load to the breaker rating, the type (MCB, MCCB or ACB) and the trip curve, with the matching parts one click away.Choose →
Quick referencePressure gauge selection guideChoose the gauge range so the working pressure sits in the middle of the dial, then the dial size, liquid filling, materials and connection.Look it up →
CalculatorEngineering unit converterPressure, power, temperature, length and flow in one converter: bar, psi, kPa, kW, HP, °C, °F, mm, inch, m³/h, L/min and CFM.Open calculator →
Quick referenceIP and IK rating decoderWhat IP65, IP66, IP67 or IK10 really mean for dust, water jets, immersion and impact, in plain words, with matching enclosures and fittings.Look it up →
Quick referenceHazardous area (Ex) quick guideZones, gas and dust groups, temperature classes and how to read an Ex marking, so you can check that equipment suits the area before you order.Look it up →
Quick referencePrecision measurement guideCalipers, micrometers, dial indicators and height gauges: which tool for which tolerance, resolution versus accuracy, and how to keep them calibrated.Look it up →
Quick referenceCable type selection guidePower, control, instrumentation, drag-chain, drive, data or high-temperature: pick the application and the site conditions and get the right cable construction, sheath and screen.Look it up →
CalculatorLighting design estimatorEnter the space, its size and mounting height to estimate the lux level, total lumens, the luminaire type, wattage and quantity, with IP, IK and colour temperature advice.Open calculator →
CalculatorStreet and area lighting plannerRoad class, width, pole layout and height in; optic type, pole spacing, luminaire lumens and wattage out, with IP, surge and colour temperature advice.Open calculator →
SelectorMetal halide and sodium to LED replacementTell us the old metal halide, sodium or mercury lamp and its fitting: get the LED lumens and watts that really match, the best way to replace it, and the yearly saving.Choose →
SelectorLED replacement lamp finderTell us the old lamp, its watts and cap, and get the LED lamp that gives the same light: lumens, LED watts, the same cap, colour temperature and dimming notes.Choose →
CalculatorSwitch to LED: retrofit finder and savings calculatorFluorescent tubes, plug-in compact lamps or halogen pins: find the right LED way for your fittings (retrofit, conversion, upgrade or new luminaire) and calculate the saving and payback.Open calculator →
SelectorFuse selectorMotor, transformer, feeder, drive, solar string, battery or control circuit: get the fuse type, rating, size, holder and breaking-capacity check, for IEC or UL systems.Choose →
SelectorLockout padlock selectorChoose the right safety padlock for lockout: body and shackle material, shackle size, keying system and labelling, for electrical, outdoor, food or hazardous areas.Choose →
SelectorSignal conditioner and isolator selector4–20 mA, 0–10 V, RTD, thermocouple or pulse in; analogue, relay or HART out: find the isolator, converter, splitter, trip amplifier, temperature transmitter or Ex i barrier you need.Choose →
SelectorSpecialty tape cross-referencePolyimide, glass cloth, foil, ESD and masking tapes: type a tape reference and see the equivalent references from other leading tape makers.Choose →
Quick referenceHow to substitute a part safelyBefore you accept an alternative brand: what must match for breakers, contactors, motor protection, bearings, belts, fuses and tapes, and what to send us to match a part.Look it up →
SelectorSmart lighting control plannerPick the place (road, car park, warehouse, factory, office, tunnel, stadium, solar) and get the control recipe: sensors, dimming, protocol, central management and the typical extra energy saving.Choose →
SelectorRed Sea coastal lighting: turtle and wildlife friendlyFor resorts, marinas and roads on the Red Sea coast: lighting that protects nesting turtles, reefs and dark skies. Keep it low, keep it long (amber, above 560 nm), keep it shielded, and built for salt, sun and heat. Check your fittings in one minute.Choose →
SelectorCable gland selectorEnter the cable outer diameter and type (armoured or not, Ex or industrial) to get the gland size, thread and type, with shroud and earth tag advice.Choose →
SelectorCable lug and crimp selectorMatch the cable size and the stud or bolt to the right lug, the barrel type for stranded or flexible conductors, copper or aluminium, and the crimping tool.Choose →
CalculatorHeat-shrink sleeve sizerGive the largest diameter the sleeve must pass over and the smallest it must grip: get the right size and shrink ratio, thin or heavy wall, with or without adhesive.Open calculator →
CalculatorGenerator size estimatorAdd the running load and the largest motor with its starting method to estimate the generator kVA, derated for site temperature.Open calculator →
CalculatorAir compressor sizingList the air tools you run: get the free air delivery you need, the motor size, the tank size and piston or screw, with a margin for leaks.Open calculator →
CalculatorEarth rod resistance calculatorEstimate the resistance of one earth rod and how many rods in a line reach your target, for clay, sand, gravel or rock.Open calculator →
CalculatorVariable speed drive (VFD) sizerChoose the drive by motor current, load type (fan and pump or constant torque), ambient temperature and cable length, with filters and braking where needed.Open calculator →
CalculatorBolt tightening torque calculatorTypical tightening torque and clamp force for metric bolts in property classes 8.8, 10.9, 12.9 and stainless A2/A4, dry or lightly oiled.Open calculator →
SelectorWelding electrode selectorPick the stick electrode for the metal, joint and position, with the current range for each diameter and storage advice for low-hydrogen rods.Choose →
SelectorSafety glove selectorCut, electrical, chemical, heat or welding: get the glove type and the marking to look for (EN 388 cut level, insulating class, chemical type).Choose →
Quick referenceSafety footwear code finderTell us the floor, wet or dry, nails and sharp objects, electrical work and heat: get the right EN ISO 20345 code (S1P, S3, S5 …) and slip rating.Look it up →
SelectorArc-flash PPE selectorEnter the incident energy from the arc-flash label to get the PPE category, minimum arc rating and the clothing and equipment to wear.Choose →
SelectorTest meter CAT rating selectorWhere will you measure and at what voltage? Get the minimum measurement category (CAT II, III or IV) for meters, clamp meters, testers and leads.Choose →
SelectorCross-reference: find an equivalentType any maker's part number and see the equivalents we list, with what to check before you substitute.Choose →- Genuine partsor approved equivalents on request
- Quotation in 24 hoursone offer for mixed lists
- Saudi company, Jeddahdelivery to sites across the Kingdom
- Documents on requestdatasheets, certificates of origin, SABER