Calculator Inputs
Example Data Table
| Case | Desired Output | Target % | Source A % | Source B % | Loss % | Source A Qty | Source B Qty |
|---|---|---|---|---|---|---|---|
| Example 1 | 100 liters | 30 | 50 | 20 | 2 | 34.0136 | 68.0272 |
| Example 2 | 250 kg | 42 | 60 | 30 | 1 | 100.1684 | 152.3571 |
| Example 3 | 80 gallons | 15 | 25 | 10 | 0 | 26.6667 | 53.3333 |
Formula Used
Required Input = Desired Output ÷ (1 − Loss Rate)
Source A Quantity = Required Input × (Target − Source B Strength) ÷ (Source A Strength − Source B Strength)
Source B Quantity = Required Input − Source A Quantity
Weighted Strength = ((A Qty × A Strength) + (B Qty × B Strength)) ÷ Required Input
Total Cost = (A Qty × A Cost) + (B Qty × B Cost)
This method solves standard two-source blending problems. It works for concentration, purity, grade, price, or percentage-based mixture planning.
How to Use This Calculator
- Enter names for both blend sources.
- Set the output unit, such as liters or kilograms.
- Enter the final amount you want after losses.
- Provide the target strength for the final mixture.
- Enter both source strengths and their costs per unit.
- Add the expected process loss percentage, if any.
- Click the solve button to view quantities, cost, ratio, and graph.
- Use the export buttons to save the result as CSV or PDF.
Frequently Asked Questions
1. What does this blending problem solver calculate?
It calculates how much of two sources you need to reach a chosen target strength. It also estimates loss-adjusted input, weighted strength, alligation ratio, total cost, and cost per delivered unit.
2. Can I use it for concentration and price blending?
Yes. The same weighted-average math supports concentration, purity, grade, strength, fat content, chemical solutions, or average-price style mixture problems with two known sources.
3. Why must the target lie between both source strengths?
A two-source blend cannot create a target outside the range formed by the two inputs. For example, mixing 20% and 50% sources cannot produce 60% or 10%.
4. What is process loss in this calculator?
Process loss represents evaporation, waste, residue, trimming, or handling loss. The calculator increases required input so the delivered output still matches your target amount.
5. What is the alligation ratio?
The alligation ratio shows the relative parts of the two sources before scaling to the final batch size. It is a quick manual check for the blending result.
6. Does the calculator handle equal source strengths?
No. If both source strengths are equal, the division step becomes invalid. In that case, blending changes only quantity and cost, not strength.
7. Can I change the unit from liters to kilograms?
Yes. Enter any unit label you want. The calculator treats the unit symbol as a display label, so the math still works consistently.
8. What do the CSV and PDF buttons export?
They export the result summary after a successful calculation. This makes it easier to store blend plans, share outputs, or keep records for reviews.