English tools
Calculators for electronics work and everyday tasks. Free, no sign-up.
Part markings
Circuit calculators
Microcontrollers
Everyday
- Date difference calculatorDays between dates, add or subtract days
- Age calculatorExact age in years, months and days
- ROC year converterTaiwan’s Minguo years and dates
- BMI calculatorWHO categories, lb or kg
- Ping to square metersTaiwan’s floor-area unit, m² and ft²
- Split bill calculatorTip, shares and leftover cents