Noise Exposure Calculator
Track your cumulative sound exposure throughout the day. Get warnings when you approach or exceed safe daily limits based on NIOSH guidelines. Measure current levels with our sound level meter.
Daily Noise Dose
of recommended daily limit
Current Level
— dB
Max Time at Level
—
Total Monitoring Time
—
NIOSH Recommended Exposure Limits
Based on NIOSH REL with 3 dB exchange rate. Exposure above these limits increases risk of hearing damage.
Understanding Noise Exposure
Noise-induced hearing loss is cumulative and irreversible. The amount of damage depends on both the intensity (loudness) of the sound and the duration of exposure. This calculator helps you track your "noise dose" – the percentage of your safe daily exposure limit that you've used. To measure real-time sound levels, use our online decibel meter.
Under 50%
Safe zone. Your current exposure is well within recommended limits.
50-100%
Caution. Consider reducing exposure or using hearing protection.
Over 100%
Daily limit exceeded. Take action to protect your hearing immediately.
How It Works
- •The calculator uses the NIOSH Recommended Exposure Limit (REL) with a 3 dB exchange rate
- •At 85 dB, you can safely be exposed for 8 hours. For every 3 dB increase, the allowed time is halved
- •Your "dose" accumulates based on both loudness and duration – louder sounds use up your allowance faster
- •The dose resets each day, but hearing damage is permanent, so staying under 100% daily is crucial
Want to see the frequency breakdown of sounds? Try our frequency analyzer to visualize the audio spectrum.
Disclaimer: This tool provides approximate measurements for educational purposes. For occupational safety compliance or medical concerns, consult a certified audiologist or occupational health professional. Learn more on our about page.