🔊 Decibel Converter
Convert dB to ratios and analyze sound levels
0 dB70 dB85 dB (danger)140 dB
Hearing Safety
None Risk
Safe exposure: Unlimited
Decibels
60.00 dB
Power Ratio
1.000e+6
Voltage Ratio
1000.0000
Similar to
💬 Normal conversation
Combining Multiple Identical Sources
2 sources
63.0 dB (+3)
3 sources
64.8 dB (+4.8)
10 sources
70.0 dB (+10)
📊 Common Sound Levels
👂
Threshold of hearing
0 dB
🍃
Rustling leaves
10 dB
🤫
Quiet whisper
20 dB
📚
Quiet library
30 dB
💼
Quiet office
40 dB
💬
Normal conversation
60 dB
🚗
Busy traffic
70 dB
🧹
Vacuum cleaner
75 dB
🎵
Loud music
85 dB
🏍️
Motorcycle
95 dB
🎸
Rock concert
110 dB
✈️
Jet engine (100m)
130 dB
💥
Gunshot
140 dB
🚀
Rocket launch
180 dB
📐 Key Formulas
Power Ratio to dB
dB = 10 × log₁₀(P₂/P₁)
Voltage Ratio to dB
dB = 20 × log₁₀(V₂/V₁)
dB to Power Ratio
P₂/P₁ = 10^(dB/10)
Combining Sources
dB_total = dB + 10×log₁₀(n)