Download time calculator

Client

Rough ETA for a file transfer given size and link speed.

How to use

Enter sizeMB|speedMbps.

About Download time calculator

Estimate download duration from file size and bitrate—local network math. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

100 MB at 50 Mbps ≈ 16.8 s
(17 s)

Nearby workflows on Toolcore

  • File size from duration and bitrate — Estimate file size from duration and bitrate—browser media planning. when units or numeric output should be checked on a related calculator.
  • Speed converter — m/s, km/h (kph), mph, knots, ft/s—paste one speed, see every column with standard mile and nautical definitions. when units or numeric output should be checked on a related calculator.
  • Unit converter (length, temperature, weight) — Length (metric & US customary), temperature (°C, °F, K), and weight (mg to lb)—paste one value, see every column. when units or numeric output should be checked on a related calculator.
  • File hex viewer — Hex dump the first 256 KB of any file with ASCII sidebar—read locally, no upload. when units or numeric output should be checked on a related calculator.

Common use cases

  • Estimate patch download time.
  • Compare ISP tiers for large assets.

Common mistakes to avoid

  • Real-world overhead

    Assumes steady Mbps; latency and protocol overhead not modeled.

FAQ

Megabytes vs megabits?

Size is MB (8× bits); speed is megabits per second.

More tools

Related utilities you can open in another tab—mostly client-side.