Compute ending inventory from beginning inventory, purchases and COGS.
Please do not make financial decisions based on these results.
What is the Ending Inventory Calculator?
Compute ending inventory from beginning inventory, purchases and COGS. To use the Ending Inventory Calculator, enter beginning inventory, purchases, cogs; it returns ending inventory, and shows them instantly as you type.
Where the Ending Inventory Calculator fits
Compute ending inventory from beginning inventory, purchases and COGS. The main figure it returns is the Ending inventory, worked out from the values you enter.
It belongs with the other accounting & microeconomics tools. If you are comparing options or checking a result from another angle, try the Inventory Turnover Calculator, LIFO Calculator for Inventory or the DIO Calculator.
How to use the Ending Inventory Calculator
- Fill in the fields. You will need Beginning inventory ($), Purchases ($), COGS ($). Use numbers from the same accounting period so the ratios are comparable. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Ending inventory. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the Ending Inventory Calculator using the default values shown in the calculator above:
Inputs
| Beginning inventory ($) | 120,000 |
|---|---|
| Purchases ($) | 640,000 |
| COGS ($) | 610,000 |
Results
| Ending inventory | $150,000.00 |
|---|
With these inputs the calculator returns Ending inventory: $150,000.00. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Beginning inventory ($) from 120,000 to 144,000 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Ending inventory | $150,000.00 | $174,000.00 | +16% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
Why does ending inventory matter?
It appears on the balance sheet and drives COGS and profit.
What is the difference between EBIT and EBITDA?
EBITDA also adds back depreciation and amortization, so it approximates operating cash profit.
Which accounting standard do the formulas follow?
They use the common textbook definitions that apply under both US GAAP and IFRS unless a tool says otherwise.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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