Sound Converter — Decibel (dB) & Power Ratio

Easiest Converter’s sound converter gives fast, accurate conversions between decibels (dB) and power ratio for audio, acoustics, broadcasting, and electronics. Type any value and get a clean, copy-ready result that works for mix notes, lab sheets, and system design.

We reference standard power-based decibels: dB = 10·log₁₀(Power Ratio). That means a +3 dB change ≈ 2× power, +10 dB = 10× power, and −3 dB ≈ ½ power. If you’re working from voltage or pressure where impedance is constant, remember dB = 20·log₁₀(Voltage Ratio). This tool focuses on the power relationship so comparisons stay consistent across amps, speakers, and transmission lines.

Why this sound converter? It’s tuned for clarity—keyboard-friendly inputs, a one-tap swap, and a copy button so results drop straight into emails or project docs. Sensible precision keeps values readable while remaining technically useful for gain staging and SPL estimates.

Use cases: matching amplifier gains, interpreting loudness differences, checking filter attenuation, and converting spec-sheet ratios to practical dB changes. Whether you’re mixing, measuring, or teaching, this converter keeps acoustics math quick and consistent.

• Use ⇄ to swap dB and ratio instantly.
• Click 📋 to copy a tidy result string.
• Power ratio must be > 0 when converting to dB.