Skip to content
ENExplore Calculators

Azure Storage Growth Calculator

Project Azure storage capacity and cost forward at a compound growth rate with a lifecycle tiering policy applied.

About Azure Storage Growth Calculator

Storage grows compound, not linear, so 6% a month is a doubling roughly every twelve months. With a lifecycle rule the hot tier only ever holds the data written inside the rule's window, and because growth is exponential that share stays small — which is exactly why tiering keeps the blended price near the cool rate as the dataset expands. Capacity forecasts made by adding last month's growth understate the year-end number badly, and knowing the doubling time tells you when quota, redundancy and lifecycle decisions have to be revisited; confirm per-GiB tier prices for your region and redundancy setting in the Azure pricing calculator.

Formula

Azure Storage Growth

capacity = current × (1 + monthly growth)^months; doubling time = ln2 ÷ ln(1 + growth); data younger than the lifecycle window is the share added in the last months, so hot share = 1 − 1 ÷ (1 + growth)^window.

monthly growth
Compound rate at which the dataset expands each month
lifecycle window
Age at which a lifecycle rule moves a blob to the cool tier
doubling time
Months until the dataset is twice its current size

Worked example

With the default values below, Azure Storage Growth Calculator returns Capacity at the Horizon of 202 TiB. Change any input above and every figure here is recalculated in your browser.

Inputs used

Current capacityaccepts 0.1–1,000,000 TiB
50 TiB
Monthly growth rateaccepts 0–100 %
6 %
Planning horizonaccepts 1–120 months
24 months
Move data to cool afteraccepts 0–120 months
3 months
Hot price per GiBaccepts 0–5 USD/GiB-month
0.0184 USD/GiB-month
Cool price per GiBaccepts 0–5 USD/GiB-month
0.01 USD/GiB-month

Results

Capacity at the Horizon
202 TiB
Growth Over the Horizon
304.9%
Doubling Time
11.9 months
Share Still on the Hot Tier
16.0%
Monthly Cost at the Horizon
$2,352.34
Blended Price per GiB
0.0113 USD/GiB-month

Step by step

  1. 1Values used
  2. 2Azure Storage Growth
  3. 3Capacity at the Horizon= 222,592,535,908,930
  4. 4Growth Over the Horizon= 304.9
  5. 5Doubling Time= 11.9 months
  6. 6Share Still on the Hot Tier= 16.0
  7. 7Monthly Cost at the Horizon= 2,352.34
  8. 8Blended Price per GiB= $0.0113/GiB-month

Assumptions and limits

  • The result is derived only from the 6 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 Azure Storage Growth calculated?

capacity = current × (1 + monthly growth)^months; doubling time = ln2 ÷ ln(1 + growth); data younger than the lifecycle window is the share added in the last months, so hot share = 1 − 1 ÷ (1 + growth)^window. Storage grows compound, not linear, so 6% a month is a doubling roughly every twelve months. With a lifecycle rule the hot tier only ever holds the data written inside the rule's window, and because growth is exponential that share stays small — which is exactly why tiering keeps the blended price near the cool rate as the dataset expands.

Why does Azure Storage Growth matter?

Capacity forecasts made by adding last month's growth understate the year-end number badly, and knowing the doubling time tells you when quota, redundancy and lifecycle decisions have to be revisited; confirm per-GiB tier prices for your region and redundancy setting in the Azure pricing calculator.

What values do I need to enter?

This calculator takes 6 inputs: Current capacity, Monthly growth rate, Planning horizon, Move data to cool after, Hot price per GiB, Cool price per GiB. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

Related Calculators

Azure Storage Growth Calculator | Calcrivo