How long is a loop? Bars and beats to seconds at your BPM and time signature, plus samples and file size at any sample rate.
Duration = bars × beats-per-bar × 60 ÷ BPM. Four bars of 4/4 at 120 BPM is exactly 8 seconds — 384,000 samples at 48 kHz, about 2.2 MB as 24-bit stereo WAV. Handy for sizing loops, pre-rolls and sample edits.
One bar = beats-per-bar × 60 ÷ BPM. A 4/4 bar at 120 BPM is 2 seconds; at 90 BPM it is 2.67 seconds. Multiply by the bar count for loop lengths.
Seconds × sample rate. Eight seconds at 48 kHz is 384,000 samples per channel — useful when you need exact edit points or zero-crossing maths.
Samples × channels × bytes per sample (bit depth ÷ 8), the raw PCM size of a WAV/AIFF. Compressed formats like MP3 or FLAC are smaller and depend on the bitrate.