Practical utilities

Tools

Small, focused tools for engineering, coordination, study, and everyday calculations.

Unit converterConvert engineering, SI, imperial, and oilfield units.World meeting timeCompare live clocks and find workable hours across four zones.Spanish B1 cardsReview 50 useful verbs and phrases with Leitner scheduling.QR generatorCreate downloadable text, URL, and Wi-Fi codes offline.Grade calculatorCalculate credit-weighted Norwegian or Tec results.Engineering calculatorsPipe loss, hydrostatics, ideal gas, NPV, and payback.