Audio Delay Calculator
Distance ↔ ms ↔ samples converter with temperature-adjusted speed of sound. Subwoofer alignment included.
- Temperature-compensated calculations
- Subwoofer delay alignment
- Speaker distance presets
Free Professional Audio Tools for Live Sound Engineers
Built by a working FOH engineer. No ads, no tracking, works offline. Calculate delay times, convert levels, plan storage — backstage, on your phone.
Used at venues across the UK. No account needed. Ever.
Available Tools
dB / Level Converter
dBu ↔ dBV ↔ dBFS ↔ volts ↔ watts. Combine multiple sources. Reference table included.
- All professional reference levels
- Add dB values (combine sources)
- Quick reference chart
Recording Storage Calculator
Sample rate + bit depth + channels + duration → file size. Plan your SD cards.
- All common formats (WAV, BWF, MP3)
- Multi-track calculations
- SD card capacity presets
Get the Free Live Sound Cheat Sheet
Why This Toolkit?
Built by a working engineer
Every tool here solves a problem encountered at real shows — delay alignment for speaker tuning, level conversion between consoles, and recording storage checks before a gig starts.
Works offline
Service worker caches everything. No signal backstage? Tools still work.
Mobile-first
Large touch targets, readable in bright sunlight, no horizontal scroll.
Pro references
Formulas verified against industry-standard references including Bob Katz (Mastering Audio), Rumsey & McCormick (Sound and Recording), and Talbot-Smith (Audio Engineer's Reference Book).