Calculate download and upload times for files, compare internet speeds, and understand how different activities require different bandwidth.
| Activity | Minimum Speed | Recommended Speed | Suitable for Your Speed |
|---|
Calculate exact download and upload times for any file size, accounting for real-world network factors.
Automatically convert between megabits per second (Mbps) and megabytes per second (MB/s) for accurate results.
Account for network overhead, congestion, and other real-world factors that affect actual speeds.
Quickly select common file sizes like movies, games, photos, and documents with one click.
See visual comparisons between download and upload speeds with progress bars and speed indicators.
Get personalized recommendations based on your internet speed and typical usage patterns.
Mbps (Megabits per second): Used by ISPs to advertise speeds. 1 Mbps = 1,000,000 bits per second.
MB/s (Megabytes per second): Used for file sizes. 1 MB = 8 Mb, so actual speed in MB/s = Mbps ÷ 8.
Network overhead (10-20%), congestion, Wi-Fi interference, and distance from router can reduce speeds by 30-50% compared to advertised speeds.
Asymmetrical: Most home plans (100/20 Mbps) - faster download than upload.
Symmetrical: Business/fiber plans (100/100 Mbps) - equal download and upload speeds.
Speed (Bandwidth): How much data can be transferred (like highway lanes).
Latency (Ping): How fast data travels (like speed limit). Both matter for different activities.
For accurate results, connect your computer directly to the modem/router with an Ethernet cable to eliminate Wi-Fi interference.
Test your speed at different times of day. Speeds are typically slower during peak hours (7-11 PM) when more people are online.
Run multiple tests throughout the day and average the results. Single tests can be affected by temporary network conditions.
Close all other applications and devices using the internet during the test for the most accurate measurement.