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Weighted Vendor Evaluation Calculator

Work out weighted vendor evaluation instantly with clear inputs, formula shown and shareable results.

About Weighted Vendor Evaluation Calculator

A quality-and-cost-based selection scores price relative to the lowest bid and combines it with the technical score at agreed weights — commonly 70:30. That structure lets a technically superior bid win despite a higher price, provided the margin is justified.

Formulas

Price score

Price score = Lowest price / Bid price x 100

Combined score

Combined = Technical score x 70% + Price score x 30%

Worked example

With the default values below, Weighted Vendor Evaluation Calculator returns Winning combined score of 90.84. Change any input above and every figure here is recalculated in your browser.

Inputs used

Vendor A technical score (out of 100)
84
Vendor A price
5,200,000
Vendor B technical score (out of 100)
92
Vendor B price
5,900,000

Results

Winning combined score
90.84
Vendor A combined score
88.80
Vendor B combined score
90.84
Recommendation
Vendor B wins on combined score

Step by step

  1. 1Values used
  2. 2Price score
  3. 3Combined score
  4. 4Winning combined score= 90.84
  5. 5Vendor A combined score= 88.80
  6. 6Vendor B combined score= 90.84
  7. 7Recommendation= Vendor B wins on combined score

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why score price relative to the lowest bid?

Because it produces a bounded 0-100 scale that behaves sensibly regardless of the absolute price level or currency.

What weighting should I use?

70:30 technical to price for complex services, 40:60 or lower for commodities where technical differentiation is minimal.

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Weighted Vendor Evaluation Calculator | Calcrivo