Free Audio & Video Tools
Calculators, converters, and reference tools for audio and video. Everything runs in your browser — no uploads, no signups.
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Decibel (dB) Calculator
Convert between decibels, voltage ratios, and power ratios. Calculate gain, attenuation, and SPL levels.
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Audio File Size Calculator
Estimate audio file size based on duration, bitrate, sample rate, and format. Plan storage and bandwidth.
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Video File Size Calculator
Estimate video file size based on resolution, duration, bitrate, and codec. Great for upload planning.
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LUFS Loudness Standards (2026)
Complete reference table of loudness standards for YouTube, Spotify, TikTok, Apple Music, podcasts, and 30+ platforms.
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