Calculator Inputs
Use direct weight mode when unit mass is known. Use dimension mode when weight must be derived from geometry and density.
Example Data Table
This sample table shows how different raw materials can be compared using landed cost logic.
| Material | Qty | Unit Weight (kg) | Purchase Weight (kg) | Rate/kg | Loss % | Landed Cost |
|---|---|---|---|---|---|---|
| Mild Steel Plate | 100 | 2.50 | 280.94 | 1.85 | 10.76 | 741.53 |
| Aluminum Sheet | 60 | 1.20 | 80.90 | 4.10 | 11.00 | 487.16 |
| Nylon Rod | 40 | 0.85 | 37.65 | 3.30 | 9.70 | 197.48 |
Formula Used
Unit Weight (kg) = [(Length × Width × Thickness) ÷ 1,000,000,000] × Density
Finished Weight Total = Finished Quantity × Unit Weight
Effective Yield = (1 − Scrap Rate) × (1 − Process Loss)
Purchase Weight Required = Finished Weight Total ÷ Effective Yield
Base Material Cost = Purchase Weight Required × Cost Per kg
Discounted Material Cost = Base Material Cost − Supplier Discount
Duty Cost = Discounted Material Cost × Duty Rate
Total Landed Cost = Discounted Material Cost + Freight + Duty + Packaging + Handling + Setup + Overhead
Cost Per Finished Unit = Total Landed Cost ÷ Finished Quantity
This method is useful for estimating purchase weight, landed material spending, and realistic unit economics in fabrication, machining, and production planning.
How to Use This Calculator
- Enter a material name and choose your currency label.
- Select direct weight mode if each part mass is known.
- Select dimension mode if weight should be derived from geometry and density.
- Provide quantity, material rate, scrap, process loss, and supplier discount.
- Add freight, duty, packaging, handling, setup, and overhead values.
- Click the calculate button to show the result above the form.
- Review the landed cost, required purchase weight, cost per unit, and chart.
- Use the CSV and PDF buttons to export result summaries.
FAQs
1. What does this calculator estimate?
It estimates raw material landed cost for engineering work by combining required purchase weight, discount, scrap, process loss, freight, duty, packaging, handling, setup, and overhead.
2. When should I use dimension mode?
Use dimension mode when you know length, width, thickness, and density but do not know finished unit weight. The calculator converts geometric volume into mass first.
3. Why is purchase weight higher than finished weight?
Purchase weight includes expected waste from scrap and process loss. This reflects the real material amount needed to deliver the planned finished quantity.
4. What is effective yield?
Effective yield is the share of purchased material that becomes acceptable finished output after scrap and process losses are applied. Higher yield means better utilization.
5. Does landed cost include overhead?
Yes. This version adds procurement overhead after direct landed expenses. That can help with budgeting, quotation support, and internal manufacturing cost reviews.
6. Can I use this for metals and plastics?
Yes. It works for metals, plastics, composites, and similar materials as long as the unit weight or density and dimensions are realistic.
7. Is loss premium the same as scrap value?
No. Loss premium here represents the extra material spending caused by waste and process loss. It does not deduct any salvage or scrap resale credit.
8. How accurate is the result?
Accuracy depends on the quality of your inputs. Use real supplier rates, measured weight or dimensions, and realistic loss percentages for better engineering estimates.