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How-to guide

How to Calculate Data Cost Per GB: Formula, Steps & Examples

Learn how to calculate Data Cost Per GB — the formula explained step by step, with worked examples and a free calculator to check your answer.

By Vikram Iyer, M.Sc Mathematics · Updated Jun 2026 · 2 min read

Calculating your cost per GB is straightforward once you know the Data Cost Per GB formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Data Cost Per GB Calculator.

What is Data Cost Per GB?

The Data Cost Per GB calculation tells you your cost per GB from a few simple inputs. The figure you are solving for here is the cost per GB, expressed in INR.

The Data Cost Per GB formula

The core formula is:

Cost per GB = Plan cost ÷ Data included

Here is what each input means:

  • Plan cost — a money amount. Example: ₹500.
  • Data included — a value measured in GB. Example: 50 GB.

How to calculate it step by step

  • Write down the plan cost (for example, ₹500).
  • Write down the data included (for example, 50 GB).
  • Apply the formula above to get your cost per GB.
  • Double-check the result with the Data Cost Per GB Calculator.

Worked examples

Example 1

Input / OutputValue
Plan cost₹500
Data included50 GB
Cost per GB₹10.00

With plan cost of ₹500 and data included of 50 GB, the cost per GB works out to ₹10.00.

Example 2

With plan cost of ₹1,000 and data included of 50 GB, the cost per GB works out to ₹20.00.

ResultValue
Cost per GB₹20.00

Example 3

With plan cost of ₹250 and data included of 50 GB, the cost per GB works out to ₹5.00.

ResultValue
Cost per GB₹5.00

Tips for an accurate result

  • Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
  • Round only at the very end. Rounding inputs early can shift the final answer noticeably.
  • Re-run the numbers whenever an input changes, rather than estimating from an old result.

Prefer not to do the maths by hand? — the Data Cost Per GB Calculator does it instantly, for free, with the formula and a worked example built in.

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Frequently asked questions

The formula is: Cost per GB = Plan cost ÷ Data included. With plan cost of ₹500 and data included of 50 GB, the cost per GB works out to ₹10.00.

Gather each input, apply the formula step by step keeping your units consistent, and round only at the end. You can verify your answer instantly with the Data Cost Per GB Calculator.

It uses the standard formula with exact arithmetic, so the result is correct for the inputs you enter. Bear in mind that real-world outcomes can still differ when underlying assumptions change.

The cost per GB is expressed in INR. Make sure your inputs use matching units so the result is correct.

Vikram Iyer · M.Sc Mathematics

Vikram Iyer is a mathematics educator with over fifteen years of teaching experience, specialising in making quantitative concepts clear and practical for everyday use.