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How to Estimate Monthly Bandwidth for a Continuous YouTube Live Stream from a VPS

A simple formula estimates monthly VPS outbound data from stream bitrate and uptime. See 30-day examples, account for variable runtime, and check your provider’s transfer rules.
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Estimate a continuous VPS-to-YouTube stream’s monthly outbound data with decimal GB = bitrate in Mbps × streaming seconds ÷ 8 ÷ 1,000. At a fixed bitrate, every 1 Mbps running nonstop for 30 days sends about 324 GB (0.324 TB), before protocol overhead or provider-specific metering. Use the encoder’s actual bitrate and your VPS plan’s outbound-transfer rules to estimate whether that traffic is included or may cost extra.

Calculate the stream’s monthly outbound data

For a stream that runs continuously at a fixed bitrate, use:

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decimal GB = bitrate in Mbps × seconds streamed ÷ 8 ÷ 1,000

The calculation converts megabits to megabytes by dividing by 8, then converts to decimal gigabytes by dividing by 1,000. A 30-day month contains 2,592,000 seconds, so a sustained 1 Mbps stream sends approximately 324 decimal GB in that period.

Continuous bitrate Estimated transfer in 30 days
1 Mbps 324 GB (0.324 TB)
4 Mbps 1,296 GB (1.296 TB)
6 Mbps 1,944 GB (1.944 TB)
10 Mbps 3,240 GB (3.24 TB)
12 Mbps 3,888 GB (3.888 TB)

These are calculated estimates, not measured VPS bills. They assume the stream sends at the stated bitrate for every second of a 30-day period; they do not include unspecified protocol overhead, retransmissions, or differences in provider accounting. For a month of another length, substitute its actual streaming seconds. A provider reporting GiB rather than decimal GB will show a different numeric value for the same bytes.

Use the bitrate for your actual stream settings

The relevant number is the encoder’s outgoing bitrate to YouTube—not the resolution label alone. YouTube’s recommended H.264 encoder settings give these examples for continuous operation over 30 days:

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YouTube H.264 ingest setting Recommended bitrate Estimated transfer for 30 days
240p–720p, 30 fps 4 Mbps 1,296 GB (1.296 TB)
720p, 60 fps 6 Mbps 1,944 GB (1.944 TB)
1080p, 30 fps 10 Mbps 3,240 GB (3.24 TB)
1080p, 60 fps 12 Mbps 3,888 GB (3.888 TB)

These are YouTube’s recommendations for H.264, not universal settings. YouTube also lists AV1 and H.265 settings; choose the recommendation for the codec and frame rate actually configured. YouTube recommends constant bitrate encoding. See YouTube’s live encoder settings.

Adjust for runtime and variable bitrate

If the stream is not online all day

Scale the continuous estimate by the fraction of the month actually streamed. For example, streaming 12 hours each day for 30 days uses about half as much as streaming at the same bitrate around the clock. Alternatively, enter the actual total number of streaming seconds in the formula.

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If the bitrate varies

Use the average observed outgoing bitrate over the period, rather than the configured peak or maximum. A peak bitrate can overstate monthly usage when the stream generally sends less. For the most direct comparison, sum actual outbound bytes from monitoring over the same billing period used by your provider.

Do not confuse transfer volume with bandwidth headroom

YouTube recommends keeping 20% room in available upload bandwidth and accounting for a primary and backup stream. That is connection-capacity headroom for a stable stream; it is not an automatic 20% increase to the encoded data estimate. If you actually transmit a backup stream at the same time, include its bitrate in the calculation. See YouTube’s encoder guidance.

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YouTube transcodes incoming live streams into multiple output formats for viewers. For VPS egress to YouTube, estimate the VPS’s outbound ingest traffic from the configured stream bitrate; do not multiply that figure by the viewer count. The viewers receive playback from YouTube, not directly from the VPS in this setup. YouTube explains live-stream transcoding in its encoder guidance.

Check how the VPS provider bills outbound transfer

The formula estimates stream payload, not the total VPS bill. Before choosing a plan, compare its included outbound allowance and billing terms with your estimate. Check the plan, region, instance, and billing period that apply to your account.

  • Whether the allowance is stated in GB or GiB.
  • Whether transfer is pooled across servers or allocated per instance.
  • Which traffic counts as billable outbound data, and how inbound, private-network, or dropped traffic is treated.
  • How overages are charged—or whether another billing method applies.
  • How often the provider’s usage dashboard updates.

Provider policies differ. For example, DigitalOcean documents pooled Droplet outbound transfer and an overage charge, while Akamai documents inbound and outbound transfer categories and conditions for metered outbound traffic. These examples illustrate why you should check the exact terms for your own plan; they do not establish a universal VPS billing rule.

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Validate the estimate against actual usage

  1. Find the encoder’s outgoing bitrate. Use the setting for the codec, resolution, and frame rate you actually send to YouTube.
  2. Record stream runtime. Use the total time online in the relevant billing period, rather than assuming every month has exactly 30 days.
  3. Calculate expected decimal GB. Apply the formula, or use average observed bitrate if it varies.
  4. Compare like with like. Check the VPS dashboard’s outbound-usage total and units for the same period. Account for the provider’s stated metering rules.
  5. Test stream health. YouTube recommends testing with audio and movement representative of the real stream and monitoring stream health. If available bandwidth cannot sustain the selected setting, YouTube’s troubleshooting guidance recommends lowering the resolution. See live encoder settings and YouTube’s live-stream troubleshooting guidance.

Or let it run in the cloud

If managing a VPS and its transfer allowance is more work than you want, StreamNeo keeps an uploaded-video YouTube stream running from the cloud: upload a recording or build a playlist, add your YouTube stream key, and go live. Nothing has to stay on at home. It streams what you upload at its original quality up to 4K 60fps for one flat price per slot, and automatically recovers if YouTube drops the stream. The first day is free with no card required; it is one free day per account. Monthly pricing is $9.99 per month. Start your free day with StreamNeo.

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