Hybrid Event Emissions Calculator

Hybrid events disperse emissions across travel, venue services, swag fulfilment, and livestreaming infrastructure. Enter attendee counts and activity data to calculate the total footprint and identify where interventions will deliver the biggest reductions.

Total number of people travelling to the venue.
Use door-to-door kilometres including connections or car legs.
Select a factor for the dominant mode (e.g., 0.09 for rail, 0.15 for economy flights).
Sum viewing hours across all remote attendees (attendees × hours watched).
Leave blank to assume 0.05 kg CO₂e per streaming hour (HD video).
Leave blank to assume 12 kg CO₂e per attendee for meals and beverages.
Leave blank to assume 35% of attendees receive a physical swag kit.
Leave blank to assume 4 kg CO₂e per kit produced and shipped.

Screening tool only. Use audited life-cycle assessments for formal sustainability reporting.

Examples

  • Leadership summit: 120 attendees, 450 km average travel, 0.15 kg/km, 600 remote hours, defaults for extras ⇒ Total hybrid event emissions: 9,738.00 kg CO₂e. Travel: 8,100.00 kg, On-site services: 1,608.00 kg, Streaming: 30.00 kg. Footprint per in-person attendee: 81.15 kg.
  • Hybrid training day: 60 attendees, 120 km travel, 0.12 kg/km, 240 remote hours, streaming rate 0.04, catering 8, swag share 0.20, swag 2.5 ⇒ Total hybrid event emissions: 1,383.60 kg CO₂e. Travel: 864.00 kg, On-site services: 510.00 kg, Streaming: 9.60 kg. Footprint per in-person attendee: 23.06 kg.

FAQ

How can I cut the footprint quickly?

Cluster in-person hubs to reduce travel distance, pivot menus toward plant-forward options, and limit physical swag to essential audiences while providing digital alternatives.

What if remote streaming hours are uncertain?

Estimate using registrations multiplied by session length, then refine with analytics from your platform after the event to improve future inputs.

Can I model carbon offsets?

Yes. Once you have the total kg CO₂e, multiply by your chosen offset price per tonne to budget for credits and compare against abatement investments.

Additional Information

  • Remote streaming hours should total the view time across all virtual participants, not just the broadcast duration.
  • Travel factors vary widely—adjust for class of service and vehicle occupancy to reflect your event's mix.
  • On-site emissions combine catering and swag. Add venue energy separately if you have metered electricity data or sustainability reports from the venue.

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