Travel Carbon Calculator is the public-facing calculator operated by onboard:earth, the UK live-events charity formerly known as Energy Revolution and later ecolibrium. Its core job is straightforward: help audiences, artists, crew, and suppliers estimate travel emissions, compare route choices, and optionally direct money into climate programmes without forcing them into a heavyweight enterprise platform.
That makes it unusually practical for festivals and live events, where transport is often the biggest sustainability problem but the available budget for software is limited. The public calculator is free, the mobile app adds travel logging and CSV export, and partner workflows can bring the same logic closer to ticket sales or recurring travel programmes.
The limits are just as clear. This is not a full event-carbon suite, it does not present a broad integration ecosystem, and it will not satisfy a procurement process that expects deep audit controls, API coverage, or whole-event emissions reporting across venue operations, catering, and materials.
What makes the tool distinctive is the nonprofit model behind it. onboard:earth positions the calculator as part of a wider community effort to reduce travel emissions first and fund environmental restoration second, which gives the page a more grounded, mission-led feel than most generic offset widgets.