📏 Length: Converts between 15 units including meters, kilometers, inches, feet, yards, and chi.
📐 Area: Converts between 9 units including square meters, mu, hectares, square feet, and acres.
🧊 Volume: Converts between 10 units including cubic meters, liters, milliliters, gallons, and cups.
⚖️ Weight: Converts between 12 units including kg, g, tons, lbs, jin, liang, and carats.
🌡️ Temperature: Precise conversion between Celsius, Fahrenheit, and Kelvin.
⚡ Electrical: Calculates the third value (Voltage, Current, or Power) from any two known values.
💡 Power: Converts between 5 units including Watts, kW, Horsepower, and BTU.
🔌 Energy/Current: Converts between 10+ units including Wh, kWh, Joules, Amperes, and mA.
💨 Pressure: Converts between 6 units including Pa, kPa, MPa, bar, psi, and atm.
🚀 Speed: Converts between 5 units including m/s, km/h, mph, and knots.
⏰ Time: Converts between 7 units including seconds, minutes, hours, days, weeks, months, and years.
How to Use
Click the top tabs to select a category.
Enter the value in the input box.
The result is displayed automatically.
Special Electrical Mode
Input Voltage & Current → Auto-calculates Power
Input Voltage & Power → Auto-calculates Current
Input Current & Power → Auto-calculates Voltage

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