关于本计算器
Estimate file transfer time from size and connection speed, including ~10% network overhead, with common tariff presets.
网络带宽与文件下载耗时计算器
根据宽带速率估算大文件传输耗时，自动计入网络实际损耗。
输入计算参数
常见网络规格：
计算结果摘要
预计传输完成耗时
1 小时 15 分钟 51 秒
实际传输速率 (包含10%网络协议损耗): ~11.25 MB/s常见问题
Bits vs bytes?
Speeds are sold in megabits (Mb/s); files are measured in megabytes (MB) — 8 bits per byte.
Why slower than promised?
Protocol overhead, congestion and Wi-Fi losses; the calculator already subtracts 10%.
How to speed up transfers?
Use a wired connection, parallel streams or a closer server/CDN.