Free resources
Free event production resources
Calculators, a show dictionary, connector pinouts, and reference charts for the people who build live events. Everything here is free, requires no account, and is maintained by the team that builds eventools.io.
Calculators
Speaker delay, amp draw, rigging loads, DMX addressing, timecode, and the rest of the math shows run on. Every calculator shows its formula, a worked example, and its sources.
21 entriesShow Dictionary
Plain-language definitions for the vocabulary of show day, from FOH to strike, with notes on how touring, corporate, theatre, and broadcast each use the words.
97 entriesPinouts
Wiring diagrams and pin tables for XLR, DMX, speakON, powerCON, RJ45, and the other connectors on every stage.
23 entriesReference Charts
Cam-lock color codes, NEMA and IEC connectors, SDI and HDMI data rates, an acronym decoder, and a translation chart for the industry’s four dialects.
7 entriesStart here
Speaker Delay Calculator
Free speaker delay calculator for live sound. Convert distance to delay time in milliseconds using the temperature-corrected speed of sound, with sample-accurate results.
Power & ElectricalEvent Power Calculator (Watts to Amps)
Free watts-to-amps calculator for event power. Single-phase and three-phase current draw with power factor, plus breaker sizing using the 80% continuous load rule.
AudiodBu / dBV / Volts Converter
Convert between dBu, dBV, volts RMS, and milliwatts in one place. Free audio signal level converter with the +4 dBu / -10 dBV explanation engineers actually need.
AudioXLR (3-Pin) Pinout
XLR 3-pin pinout for balanced audio: pin 1 ground/shield, pin 2 hot (+), pin 3 cold (−). Wiring diagram, pin table, and termination notes for mic and line cables.
LightingDMX512 (5-Pin XLR) Pinout
DMX512 5-pin XLR pinout: pin 1 common, pin 2 data − , pin 3 data +, pins 4/5 spare. Wiring diagram, 3-pin adaptation, termination, and cable requirements.
AudiospeakON NL4 Pinout
speakON NL4 pinout: 1+/1− carry the full-range signal, 2+/2− the second circuit for bi-amp runs. Wiring table, NL2 compatibility, and bridged-amp cautions.