Decibel (dB) Level Converter

Decibel (dB) Level Converter

The Decibel (dB) Level Converter turns a value entered in one decibel or linear unit into every related representation. Pick a reference type — Sound Pressure Level (SPL), Voltage, or Power — choose what your input is, and the tool computes the equivalent dB readings, the underlying linear quantity (pascals, volts, watts), and the relevant ratios. Conversions follow the standard 20·log₁₀ rule for amplitude/pressure quantities and 10·log₁₀ for power.

كيفية استخدام

1. Pick a reference type: SPL, Voltage, or Power.
2. Enter your value in the Value field.
3. Select the unit your value is in (e.g. dB SPL, dBV, dBm, Pa, V, W, or a ratio).
4. Read all equivalent values in the output panel.
5. تبديل Show formulas used to verify the math, and consult the contextual reference table for typical real-world levels.

خصائص

• Three reference types – SPL (vs. 20 µPa), Voltage (dBV vs. 1 V and dBu vs. 0.7746 V), and Power (dBm vs. 1 mW and dBW vs. 1 W).
• Linear and logarithmic inputs – Enter either a dB value or a linear value (Pa, V, W) or a raw ratio.
• Pressure ↔ intensity – Automatically computes intensity ratio as (p / p₀)² for plane sound waves.
• Voltage ↔ power – Treats voltage as an amplitude quantity, so power ratio equals the square of the voltage ratio at constant impedance.
• Formula display – Optional inline panel shows the exact formula used for each reference type.
• Reference table – Common real-world levels for each reference (whisper, conversation, jet engine, line level, Wi-Fi router, etc.) update with the selected reference type.