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FIFO Inventory Costing Calculator — result sheet
Calculate cost of goods sold and ending inventory value from inventory layers consumed in first-in, first-out order.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Consume layers from oldest to newest until units sold are allocated; FIFO COGS = Σ(consumed quantity × layer unit cost), while ending inventory = Σ(remaining quantity × layer unit cost).
FIFO assigns the oldest recorded inventory costs to the units sold first. This calculator makes the layer order explicit, consumes only the requested number of units, and keeps the remaining newer layers in ending inventory. It is an arithmetic illustration of the FIFO flow and does not decide which accounting standard, tax rule, periodic/perpetual system, currency, or inventory adjustment policy applies to a real report.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Inventory layers oldest to newest — Enter quantity@unit cost pairs separated by commas; the first pair is the oldest layer.
- Units sold — units; minimum 0; maximum 1000000000000
Worked example
| Input | Value |
|---|---|
| Inventory layers oldest to newest | 100@10, 50@12, 80@14 |
| Units sold | 120 |
FIFO consumes 100 units at 10 and 20 units at 12, so COGS = 1,240; 110 units remain with ending inventory value 1,480.
Assumptions and limits
- Each layer is entered as quantity@unit cost, with layers listed from oldest to newest and all quantities and costs using compatible units.
- Unit costs are historical costs in the same currency; the calculator does not revalue, index, or convert them.
- Units sold cannot exceed the total units supplied and are allocated wholly through the listed layers.
- The calculation uses FIFO cost flow only; shrinkage, spoilage, returns, write-downs, freight, overhead absorption, and purchase discounts are not modeled.
- The result is a transparent cost-flow scenario, not a determination of the accounting method required in a particular jurisdiction.
- A real inventory record should be reconciled to source documents and reviewed under the applicable reporting framework.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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