Labels Calculator
Project Material Calculator works out Bill of materials and Total material cost from Craft or hobby, Quantity of each material per finished piece and Cost per unit of each material. The default figures on this page give total project cost of 12.43; change any entry and the result, the working and the sources update together.
Your figures
Updates as you typeHow this is worked out
7 steps
- General craft project: 4 materials for 1 finished piece(s).
- Each material's requirement is multiplied by 1 and increased by 10% for waste.
- Material A: 100 each x 1 + waste = 110 = 5.5
- Material B: 2 each x 1 + waste = 2.2 = 2.64
- Material C: 1 each x 1 + waste = 1.1 = 3.85
- Material 4: 4 each x 1 + waste = 4.4 = 0.44
- Total material cost 12.43 = 12.43.
Bill of materialstable
| material | perPiece | requiredWithWaste | inStock | toBuy | packsToBuy | purchased | unitCost | lineCost |
|---|---|---|---|---|---|---|---|---|
| Material A | 100 | 110 | 0 | 110 | 110 | 0.05 | 5.5 | |
| Material B | 2 | 2.2 | 0 | 2.2 | 2.2 | 1.2 | 2.64 | |
| Material C | 1 | 1.1 | 0 | 1.1 | 1.1 | 3.5 | 3.85 | |
| Material 4 | 4 | 4.4 | 0 | 4.4 | 4.4 | 0.1 | 0.44 |
Its 5 worked examples are re-run on every release, last on 15 September 2026. What changed
Sources and references
1 source
What the Project Material Calculator calculates
Builds a bill of materials for a craft or hobby project: quantities per finished piece scaled to a batch, with a waste allowance, unit costs, purchase pack sizes and total cost.
How to use this Project Material Calculator
Enter Craft or hobby, Quantity of each material per finished piece, Cost per unit of each material and Material names. Bill of materials updates as you type, and “Use a worked example” loads checked figures you can adjust. Change one figure at a time to see what drives the result.
How the result is worked out
Open “How this is worked out” beside the result for the step-by-step calculation behind Bill of materials, Total material cost and Material cost per piece.
The method follows Bill-of-materials arithmetic: required = per-unit quantity x units x (1 + waste); packs = ceil(required / pack size)..
Beading: 100 beads a piece, 10 pieces, 10% waste example
With Craft or hobby: beading, Quantity of each material per finished piece: 100, Cost per unit of each material: 0.05, Finished pieces to make: 10, the calculator returns Total material cost: 55, Material cost per piece: 5.5. This example is checked against an independent source in the test suite.
What you can compare
Change one input at a time to see how it affects Bill of materials, Total material cost and Material cost per piece. The inputs you can vary are Craft or hobby, Quantity of each material per finished piece, Cost per unit of each material, Material names, Pack or roll size each material is sold in and Finished pieces to make.
Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.
See something wrong? Report a problem with this calculator
Frequently asked questions
How can I make my own labels for free?
The calculation is free and does not require an account. An account is only needed for optional features such as saving, comparing, exporting, or sharing supported scenarios.
What information do I need for the Project Material Calculator?
You need Craft or hobby, Quantity of each material per finished piece, Cost per unit of each material, Material names, Pack or roll size each material is sold in, Finished pieces to make, Waste and spoilage allowance and Quantity already in stock. The page opens with default figures that give total project cost of 12.43, so you can see the scale before entering your own.
What does this Project Material Calculator show?
It shows Bill of materials, Total material cost, Material cost per piece, Labour cost, Total project cost, Total cost per piece, Waste allowance applied and Number of materials, with the working and any warnings for your entries.
Can I check how the Project Material Calculator result was calculated?
Yes. The “How this is worked out” section shows the calculation steps, and the sources section identifies the references used for the method.