UOM ConverterUnit conversions for the electrical trade
31 converters for price units, wire sizes, voltage drop and product codes, for the US, Canada and Europe. Free to use in your browser, with no account, and they keep working offline once loaded.
All converters
Pricing
Price per E / C / MDistributor price units: E is per each, C is per 100, M is per 1,000. Wire is usually priced per M feet.- Wire price per ft ↔ mWire price per ft, per 100 ft (C), per 1,000 ft (M), per metre and per km.
- List × multiplierNet price from list price. Discounts can be chained: "50/10" is 50% off, then 10% off that.
- Margin ↔ markupMargin is profit as a % of the sell price; markup is profit as a % of cost. 25% margin = 33.3% markup.
- Boxes & packsHow many packs to order for a quantity, and price per each ↔ per pack.
- Wire coils & reelsCoils or reels needed to cover a run. Three wires pulled 200 ft is 600 ft of wire.
Wire & conduit
Electrical
kVA · kW · ampsTransformer, generator and UPS sizing. Three-phase uses line-to-line volts.- Voltage dropVoltage drop on a run, and the smallest wire that keeps it within your target.
- Power factor correctionCapacitor kvar needed to raise a load's power factor, and what it does to kVA and current.
- Transformer fault currentFull-load current and the maximum fault current at a transformer's secondary terminals, from kVA and nameplate impedance.
- Motor speed & slipSynchronous speed from frequency and poles, slip from the nameplate speed, and the same motor on the other frequency.
- Line ↔ neutral voltageThree-phase wye systems: line-to-neutral = line-to-line ÷ √3.
- Ohm's lawEnter any two of volts, amps, ohms and watts to get the other two.
- Energy costWhat a load costs to run, and what a retrofit saves.
Units
Fractions of an inchFractional inches ↔ decimal inches ↔ millimetres, for drill bits, punches and enclosure sizes.- LengthFeet, metres, inches and millimetres.
- TemperatureConductor insulation and termination ratings are 60, 75 and 90 °C.
- PowerHorsepower, kilowatts and BTU per hour (electric heat).
- Light levelFoot-candles and lux.
- TorqueLug and breaker termination torque.
- WeightPounds and kilograms.
- Metal priceCopper and aluminum prices per pound ↔ per kilogram, for surcharges.
- Box fill volumeThe NEC uses cubic inches, the CEC uses millilitres.
Product data
UOM codesUnit as it appears in a supplier file or ERP (EA, ft, box, lbs…) to its UN/ECE Recommendation 20 code, as used in BMEcat, ETIM and e-invoicing.- Spec value → metric (ETIM)ETIM features take metric values. Type a spec as the supplier wrote it, with its unit, and get the metric value and unit code.
- Price quantity → unit pricePrice files give a price for a price quantity of order units, and an order unit can hold several content units (a box of 100 connectors).
- UOM mix-up checkCompare the same item's price from two sources. About 10×, 100× or 1000× apart almost always means one was loaded in the wrong UOM.
- Packaging levelsEach → inner pack → case → pallet quantities, with GTIN-14s for the pack levels built from the item GTIN.