200 GB egress, 100 GB free, $0.09/GB
- Billable = 100 GB
- Cost = 100 × $0.09 = $9.00
tech calculator
Cloud Egress Cost Calculator
Estimate data transfer out (egress) cost using GB and a per-GB rate with a free allowance.
Results
- Billable GB
- 0.00
- Estimated egress cost
- $0
How to use this calculator
- Enter egress GB for the month.
- Enter any free allowance (e.g., first 100 GB free).
- Set your per-GB rate for the region/tier.
- Review billable GB and estimated egress cost.
Inputs explained
- Egress data
- Total GB transferred out of the cloud for the period.
- Free allowance
- Free tier amount before billing starts.
- Rate per GB
- Your provider’s egress rate; adjust for region/tier.
How it works
Billable GB = Egress GB − Free allowance (cannot go below zero).
Egress cost = Billable GB × Rate per GB.
Formula
Billable GB = max(0, Egress − Allowance) Cost = Billable GB × Rate
When to use it
- Budgeting data transfer out for a new feature or migration.
- Comparing regions/providers by plugging in their rates.
- Checking whether free allowances cover your typical egress.
Tips & cautions
- Rates vary by region and volume; use your actual rate card for accuracy.
- If you use multiple tiers, enter an average effective rate or split the calc by tier.
- Pair with S3/storage calculators for a fuller cloud cost picture.
- No tiered/volume pricing modeled; uses a flat rate.
- Does not include inter-region or CDN transfer nuances.
- Ignores provider-specific discounts/commitments; adjust rate to reflect them.
Worked examples
1,200 GB egress, 100 GB free, $0.05/GB
- Billable = 1,100 GB
- Cost = 1,100 × $0.05 = $55.00
Deep dive
Estimate cloud egress costs by entering GB transferred out, free allowance, and per-GB rate.
Use it to budget data transfer costs or compare regions/providers with different egress pricing.
FAQs
- Does this include inter-region transfer?
- No. It’s a simple egress estimate. Inter-region rates vary; adjust the rate if you’re modeling that.
- How do I handle tiered rates?
- Use an average effective rate or run the calculator per tier and sum results.
- Does CDN offload change this?
- Yes. Egress may be reduced if a CDN serves traffic. This tool assumes raw egress GB from the origin.
- Can I include data transfer in?
- This focuses on outbound. Inbound is usually free on major clouds.
- What about sustained use discounts?
- Adjust the rate to reflect any discounts or commitments you have.
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Estimate only. Real egress bills can include tiered rates, inter-region fees, and discounts. Use your provider’s pricing for accuracy.