Upload Time Calculator

Enter a file size and your actual upload speed to estimate how long it will take to send the data.

Use upload speed, not download speed

Many internet connections are asymmetric, so the advertised or measured download rate can be much higher than upload bandwidth. For cloud backups and file sharing, the upload rate is the relevant number.

Large cloud uploads

Encryption, Wi-Fi, provider throttling, many small files and competing traffic can increase completion time. For recurring backups, use the Backup Window Calculator to size the required link.