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S3 Storage Cost Calculator

Price an S3 bucket across the 50 TB and 500 TB volume tiers and see the blended rate you actually pay per GB.

About S3 Storage Cost Calculator

S3 Standard storage is billed on a declining volume schedule, so the marginal GB gets cheaper once a bucket passes 50 TB and again past 500 TB, and the rate you feel is the blend of all three bands. Storage is metered in GB-month, so 60 TB present for half a month costs the same as 30 TB present for all of it. The rates above are user-supplied list prices — confirm them against the AWS S3 pricing page for your region before you commit a budget. Tiering is why a single 600 TB bucket is cheaper than six 100 TB buckets in six accounts without consolidated billing, and why chargeback models built on a flat per-GB rate over-bill large teams.

Formula

S3 Storage Cost

cost = min(GB, 51200) x tier1 + next 460800 GB x tier2 + remainder x tier3, all per GB-month.

GB
Average GB stored during the month
tier1
Rate for the first 50 TB
tier2
Rate for the next 450 TB
tier3
Rate beyond 500 TB

Worked example

With the default values below, S3 Storage Cost Calculator returns Monthly Storage Cost of $1,371.20. Change any input above and every figure here is recalculated in your browser.

Inputs used

Average data stored per monthminimum 0 GB
60,000 GB
Price for the first 50 TBminimum 0 USD per GB-month
0.023 USD per GB-month
Price for the next 450 TBminimum 0 USD per GB-month
0.022 USD per GB-month
Price above 500 TBminimum 0 USD per GB-month
0.021 USD per GB-month

Results

Monthly Storage Cost
$1,371.20
Annualised Storage Cost
$16,454.40
Data Billed at the First Tier
51,200 GB
Blended Effective Rate
0.0229 USD per GB-month
Data Stored
59 TiB

Step by step

  1. 1Values used
  2. 2S3 Storage Cost
  3. 3Monthly Storage Cost= 1,371.20
  4. 4Annualised Storage Cost= 16,454.40
  5. 5Data Billed at the First Tier= 51,200 GB
  6. 6Blended Effective Rate= 0.0229 USD per GB-month
  7. 7Data Stored= 64,424,509,440,000

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is S3 Storage Cost calculated?

cost = min(GB, 51200) x tier1 + next 460800 GB x tier2 + remainder x tier3, all per GB-month. S3 Standard storage is billed on a declining volume schedule, so the marginal GB gets cheaper once a bucket passes 50 TB and again past 500 TB, and the rate you feel is the blend of all three bands. Storage is metered in GB-month, so 60 TB present for half a month costs the same as 30 TB present for all of it. The rates above are user-supplied list prices — confirm them against the AWS S3 pricing page for your region before you commit a budget.

Why does S3 Storage Cost matter?

Tiering is why a single 600 TB bucket is cheaper than six 100 TB buckets in six accounts without consolidated billing, and why chargeback models built on a flat per-GB rate over-bill large teams.

What values do I need to enter?

This calculator takes 4 inputs: Average data stored per month, Price for the first 50 TB, Price for the next 450 TB, Price above 500 TB. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

Does S3 bill on provisioned or actual usage?

Actual usage. There is nothing to provision — AWS samples the bytes stored and averages them over the month into GB-month units, so deleting data reduces the bill part-way through a month.

Related Calculators

S3 Storage Cost Calculator – Calculate Monthly Storage Cost