⏱️ Upload & Download Time Calculator

Enter the file size and your connection speed. Use your upload speed for uploads and download speed for downloads; on most home connections they are very different.

File size

Unit

Connection speed (Mbps)The number from a speed test or your internet plan.

Real-world efficiency (%)Connections rarely run at full speed. 85% is a fair everyday guess.

Estimated time

At full advertised speed

Data per hour at this speed

How it is calculated

File sizes are in bytes and connection speeds in bits; one byte is eight bits. A 1 GB file is 8,000 megabits, so at 50 Mbps it takes 160 seconds at full speed. The efficiency setting allows for protocol overhead, Wi-Fi and other traffic on the line.

Why uploads feel slow

Many home connections give far less upload than download speed, sometimes a tenth. A video that downloads in a minute can take ten to upload, which is why the speed you enter should match the direction.

Not sure how big your video will be? Start with the Video File Size Calculator.

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