The math
Emissions = electricity × grid intensity. Moving a file costs 0.30 kWh per GB across data centre, network and device. Keeping it costs about 19 kWh per TB per year across three replicated copies.
How much CO₂ does a single file cost when you send it and keep it? Enter the size, see the footprint, and the math behind it.
Drop a folder to measure everything in it, list file types by hand, or check a single file.
Nothing is uploaded. Your browser reads only file names and sizes; the content never leaves your device.
Every send or download moves the file once more. Storage counts for as long as it stays in the cloud.
Sustainable Web Design Model v4 · Cloud Carbon Footprint · Ember 2025 / Our World in Data
Informative estimate only. Digital-emissions models differ by roughly a factor of three, so treat the result as an order of magnitude, not a measurement. Transfer factors: Sustainable Web Design Model v4. Storage factors: Cloud Carbon Footprint. Grid intensities: Ember 2025 via Our World in Data. Verde365 accepts no liability for the accuracy or use of these figures.
A quick read on the method, the data, and the limits.
Emissions = electricity × grid intensity. Moving a file costs 0.30 kWh per GB across data centre, network and device. Keeping it costs about 19 kWh per TB per year across three replicated copies.
Transfer energy from the Sustainable Web Design Model v4, storage energy from Cloud Carbon Footprint, and 2025 grid intensities from Ember via Our World in Data. Every factor is listed under “Show the math”.
Not a measurement. It leaves out writing the file, reading it on screen, idle network capacity and the manufacturing of storage disks. For audit-ready Scope 3 IT reporting, talk to us.
Verde365 turns Scope 1–3 accounting, Product Carbon Footprints and CBAM into one audit-ready workflow.
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