Free Sound Level Meter Online
Real-time relative sound level measurement using your device microphone
Relative Sound Level Reference
Comparative sound levels for environmental assessment
Important Notice
- • This measures relative sound levels (dBFS), not physical dB SPL
- • Perfect for comparing different sound sources
- • Cannot replace professional sound level meters
- • Readings depend on device microphone and settings
- • Allow microphone access when prompted
- • Use for educational and comparative purposes
Air Conditioner Noise Guidelines
Use this sound level meter to compare the relative noise levels of your portable air conditioner with other sound sources. Our meter helps you evaluate if your AC unit is quieter or louder than typical household appliances.
Very Quiet (0-30)
Ideal for bedrooms and quiet spaces. This sound level indicates whisper-quiet operation.
- • Perfect for bedrooms and nurseries
- • Won't disturb sleep or work
- • Premium AC units typically achieve this
- • Use the meter to compare during night hours
Moderate (30-70)
Acceptable for living areas. Your sound meter reading shows moderate noise levels.
- • Suitable for living rooms and offices
- • May be noticeable but not disruptive
- • Most standard AC units fall here
- • Monitor with meter during peak usage
Too Loud (>70)
Too loud for residential comfort. If your sound meter shows these levels, consider alternatives.
- • Disruptive to sleep and conversation
- • May be uncomfortably loud
- • Consider sound dampening or replacement
- • Use meter to compare with other units
Sound Level Meter Best Practices for AC Testing
- • Position the meter 3 feet from the AC unit
- • Take measurements at consistent locations
- • Test during different fan speeds and modes
- • Record meter readings for comparison
- • Compare readings with other appliances for context
Privacy & Security
Your Privacy First
- Our sound meter runs entirely in your browser - no audio data is transmitted to our servers
- Sound level measurements are processed locally on your device
- No recordings or audio files are stored when using this meter
- Your microphone access permissions can be revoked at any time
Device Compatibility
- Sound meter works on smartphones, tablets, and computers
- Compatible with Chrome, Firefox, Safari, and Edge browsers
- Optimized for relative sound level comparison
- No app installation required - use the sound meter instantly
Understanding Relative Sound Measurements
Our sound meter measures relative sound levels using your device's microphone, perfect for comparing the noise levels of different portable air conditioners and household appliances. Understanding how to interpret these readings is crucial for making informed decisions.
What This Meter Measures
This sound meter measures relative digital sound levels (dBFS), not physical sound pressure (dB SPL). It's perfect for comparing different sound sources in your environment, making it ideal for evaluating air conditioner noise relative to other appliances.
Why Use This Sound Meter?
Unlike basic noise apps, our sound meter provides consistent relative measurements for environmental comparison. This makes it ideal for testing portable air conditioners against each other and other home appliances to find the quietest option.
Sound Meter Reading Interpretation
| Meter Reading | Relative Level | AC Recommendation |
|---|---|---|
| 0-15 | Very quiet | Perfect for bedrooms |
| 15-30 | Quiet | Excellent for all spaces |
| 30-50 | Moderate | Good for living areas |
| 50-70 | Active | Acceptable daytime only |
| 70+ | Very loud | Too loud for comfort |
Sound Meter FAQ
How accurate is this online sound meter?
Our sound meter provides reliable relative measurements for comparing different sound sources. It measures digital sound levels (dBFS) rather than physical sound pressure (dB SPL), making it perfect for comparing air conditioner noise levels with other appliances. For scientific or legal compliance testing, use professional calibrated equipment.
Can I use this sound meter on my mobile phone?
Yes! This sound meter is fully optimized for mobile devices. Your smartphone's built-in microphone is sufficient for relative sound level comparison, including testing portable air conditioners. The meter interface automatically adapts to your screen size for the best user experience.
Why does my sound meter reading fluctuate?
Sound meter readings naturally fluctuate because air conditioners produce varying noise levels depending on fan speed, compressor cycling, and environmental factors. The average (AVG) reading on your sound meter provides the most useful measurement for evaluating overall relative noise levels.
What's the difference between this meter and professional ones?
Our sound meter measures relative digital sound levels (dBFS) using your device's microphone, while professional meters measure calibrated physical sound pressure (dB SPL). This makes our meter perfect for comparing different appliances but not suitable for official noise compliance testing or scientific measurements.
How do I get the most accurate sound meter readings?
For the most consistent sound meter measurements:
- Position the meter consistently 3-6 feet from sound sources
- Hold your device at the same height for all measurements
- Minimize background noise when comparing sounds
- Take multiple readings and use the average
- Ensure your device's microphone is not blocked
- Wait for the meter reading to stabilize (30-60 seconds)
Related Tools & Resources
BTU Calculator
Calculate the right cooling capacity for your space before choosing an AC unit to test with your sound meter.
Energy Cost Calculator
Estimate running costs for quiet AC units identified using this sound meter.
Noise Level Guide
Comprehensive guide to interpreting your sound meter readings and AC noise standards.
Pro Tip: Use this sound meter in combination with our other tools to find the perfect balance of cooling performance, energy efficiency, and quiet operation for your portable air conditioner.