MAXScanner Calculator

Backup Time Calculator

Estimate backup duration from data size, sustained line speed and usable-throughput efficiency, with ideal-time and efficiency-penalty comparisons.

Live editable inputs

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Inputs

Data size (GB)Sustained line speed (Mbps)Usable throughput (%)

Results

16.6667 min

80% usable throughput: 80 Mbps; 10 GB backup → 16.6667 min (Ideal 100% time: 13.3333 min).

10 GB backup · 100 Mbps

80% usable throughput

80 Mbps · 10 MB/s usable rate

Ideal 100% time: 13.3333 min

3.33333 min added by the entered efficiency

10 GB backup at common line rates

Line rate	Effective rate	Estimated time
25 Mbps	20 Mbps	1.11111 h
100 Mbps	80 Mbps	16.6667 min
500 Mbps	400 Mbps	3.33333 min
1000 Mbps	800 Mbps	1.66667 min

Working

usable rate = 100 × 80/100 = 80 Mbps
Time = 10 × 8000 ÷ 80 = 1,000 s
Ideal 100% time = 10 × 8000 ÷ 100 = 800 s
added by the entered efficiency = 1,000 − 800 = 200 s

More actions

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How to use this calculator

Estimate a backup window from protected data size, sustained network rate and the share of that line rate you expect to achieve as usable throughput. The result shows both the efficiency-adjusted estimate and the theoretical 100% line-rate time.

Step-by-step

Step 1
Enter the amount of data that will actually be transferred in decimal GB.
Step 2
Enter the sustained line speed in Mbps, then set usable-throughput efficiency.
Step 3
Compare the realistic estimate, ideal time and common-line-rate scenarios against the backup window available.

How the result is calculated

Seconds = size(GB) × 8000 ÷ (line Mbps × efficiency/100), using decimal GB.

Where this calculator is useful

Cloud backup window planning

Use the result as a check within this type of task, with the assumptions shown above.

Off-site replication estimates

Use the result as a check within this type of task, with the assumptions shown above.

Pre-migration or restore-window checks

Use the result as a check within this type of task, with the assumptions shown above.

Common questions

Does this include compression or deduplication?

No. Enter the post-compression or post-deduplication amount if your backup system reduces bytes before transfer; the calculator does not invent a reduction ratio.

Can storage be the bottleneck instead of the network?

Yes. Source reads, destination writes, encryption, compression, API limits and backup software can all make sustained throughput lower than the network line rate.

Why show an ideal time?

The ideal figure is a useful lower-bound comparison at 100% of the entered line speed. The efficiency-adjusted result is the planning value when you expect lower sustained throughput.