Cool Conversions -- Sound --

A whisper 20 dB

A quiet rural area 30 dB

A refrigerator humming 40 dB

Light traffic at 15 metres 55 dB

A radio turned up loud 60 dB

Pneumatic drill at 15 metres 85 dB

Heavy traffic at 15 metres 90 dB

Power drill 90 dB

Tennis player Maria Sharapova grunting

  90 dB

Diesel locomotive accelerating 100 dB

Jet taking off at 600 metres 105 dB

Chainsaw 110 dB

Rock concert 110 dB

A club at full volume 117 dB

Jet taking off at 60 metres 120 dB

Human pain threshold 130 dB

Crowd roar after goal at FA cup final

  130 dB

Jet taking off at 30 metres 140 dB

Blast of a gun 140 dB

Loudest noise (sonic boom) 194 dB

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