dB Calculator — TrackToMix

⚡ Voltage dB

dB = 20 × log₁₀(V₁/V₂) — Enter any two values to solve for the third

Voltage 1 (V₁)

Voltage 2 (V₂)

dB

Enter two values to calculate the third

⚡ Power dB

dB = 10 × log₁₀(P₁/P₂) — Enter any two values to solve for the third

Power 1 (P₁)

Power 2 (P₂)

dB

Enter two values to calculate the third

🔊 SPL Calculator

dB SPL from pressure (Pa), reference 20µPa

Pressure (Pa)

Enter pressure to calculate SPL

🔄 dBu / dBV / dBm

Enter one value to get all conversions

dBu

dBV

dBm (600Ω)

Voltage (V)

Enter any value for conversions

➕ Sum dB Levels

Add 2-10 sources (acoustic sum, not arithmetic)

Enter dB levels to sum

📐 Inverse Square Law

SPL at distance given SPL at reference distance

SPL at Reference (dB)

Reference Distance

Target Distance

Enter all values to calculate SPL at distance

⚖️ dB ↔ Ratio

Quick converter between dB and ratios

dB

Ratio

Enter dB or ratio to convert

📊 Headroom Calculator

Given max level and operating level, show headroom

Maximum Level (dB)

Operating Level (dB)

Enter levels to calculate headroom

📈 Visual Level Meter

SVG meter showing dB level with color zones

dB Level

-∞ dB

Enter dB level to visualize

📋 Common Reference Levels

Standard audio reference levels and conversions

Reference	dBu	dBV	Voltage (V)	Application
0 dBu	0	-2.2	0.775	Professional line level
0 dBV	+2.2	0	1.000	Reference voltage
+4 dBu	+4	+1.8	1.228	Pro equipment nominal
-10 dBV	-7.8	-10	0.316	Consumer equipment nominal
0 dBFS	varies	varies	varies	Digital full scale
Mic Level	-60 to -20	-62 to -22	0.0008 to 0.08	Microphone output
Instrument Level	-20 to -10	-22 to -12	0.08 to 0.25	Guitar, bass, synth
Speaker Level	+10 to +30	+8 to +28	2.4 to 25	Power amplifier output