Free Dry Ice Tool
Storage / Duration Calculator
Estimate how long dry ice lasts in a cooler or container based on quantity, insulation, temperature and how often it's opened.
Estimated usable time
2.3 days – 3.4 days
Estimated loss: about 7 lbs per 24 hours.
Dry ice sublimates — it turns directly into CO₂ gas as it absorbs heat. Better insulation, fewer openings and less empty space slow this down.
Planning estimate only. Actual dry ice usage varies based on insulation, airflow, temperature, container type and handling.
Dry ice releases carbon dioxide gas and requires proper ventilation. Handle only with insulated gloves, and never seal it in an airtight container.
Last reviewed: September 2026
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