EventZero is the only platform built specifically for event sustainability — combining automated carbon accounting, AI-generated insights, and stakeholder-ready reporting in one place.
Trusted by event professionals across North America, Europe, and Asia Pacific

Stakeholders, sponsors, and regulators increasingly expect measurable environmental data — not estimates, not pledges.
Without measured data, sustainability claims are unverifiable — leaving you exposed to scrutiny from sponsors, clients, and regulators.
Spreadsheets and ad-hoc calculations produce inconsistent results that can't withstand third-party review or audit.
Without visibility into emissions by category, high-impact reduction levers stay hidden — and budgets go to the wrong places.
Pulling data together for stakeholder reports can take weeks. By then, the moment to act has already passed.
EventZero solves all of this — purpose-built for events, not adapted from generic carbon tools.
EventZero is designed for busy event professionals — not data scientists. Get from raw data to boardroom-ready reporting fast.
Pull event data automatically from Cvent and other platforms, or enter manually. No spreadsheet wrangling required.
ISO-aligned methodology calculates carbon across all event categories — travel, energy, catering, waste, and more.
AI-generated recommendations surface your highest-impact reduction opportunities and benchmark against similar events.
Generate stakeholder-ready sustainability reports aligned with GHG Protocol, GRI, and ISO 20121.
EventZero isn't a generic carbon calculator with an events skin on top. It's purpose-built for the complexity of event sustainability.
Built on ISO 14064-2 and ISO 20121 frameworks — the same standards used by enterprise sustainability programs worldwide.
Developed by sustainability experts who understand the unique emissions profile of events — not adapted from generic corporate tools.
Multi-year partner for Vivid Sydney with NSW Tourism. Trusted by event professionals across North America, Europe, and Asia Pacific.
One platform that handles measurement, analysis, and reporting — so your team can focus on reducing impact, not chasing data.
Native Cvent integration pulls event data automatically, eliminating manual entry and the errors that come with it.
Get prioritised, actionable recommendations for reducing emissions — tailored to each event's unique profile.
Track performance across your entire event portfolio and benchmark year-on-year to show real progress.
Invite suppliers to input their own data directly — improving accuracy and distributing the reporting workload.
Generate polished, branded reports aligned with GHG Protocol, GRI, and ISO standards — in minutes, not weeks.
Manage multiple events, teams, and clients from a single dashboard with role-based access control.
Generic carbon tools and spreadsheets weren't built for events. EventZero was.
| Capability | EventZero | Generic Carbon Tools | Spreadsheets |
|---|---|---|---|
| Event-specific emissions factors | |||
| Automated data collection (Cvent, etc.) | |||
| AI-generated reduction recommendations | |||
| ISO 14064-2 & ISO 20121 aligned | Partial | ||
| Supplier collaboration portal | |||
| Portfolio-level benchmarking | Partial | ||
| Stakeholder-ready report generation | Partial | ||
| Annually updated emissions factors | Varies |
"The fact that the data about each event pulls through automatically from Cvent is a game changer for busy planners."— EventZero Client, USA
Multi-year partner for Vivid Sydney with NSW Tourism — managing sustainability measurement for one of the world's largest festivals.
All plans include ISO-aligned methodology, annually updated emissions factors, and stakeholder-ready reporting.
First sustainability reports — simple, accurate, ready to share.
Teams automating sustainability across event programs.
Large portfolios requiring comprehensive sustainability governance.
Join the event teams already using EventZero to measure, reduce, and report on their environmental impact with confidence.
Trusted by event professionals across North America, Europe, and Asia Pacific