Tender scoring calculator
Rank the bids, see what one quality point is worth in euros, and test what a cheaper rival would do to you.
The explanations on this page were generated with the help of an AI system. The calculations are tested as described in how we check.
Enter the price formula and weighting from your procurement documents, your own bid and the bids you expect from competitors. The calculator ranks the bids, shows what one quality point is worth to you in euros, and tests what happens if a cheaper bid arrives. It uses exact arithmetic, so the only rounding is the rounding you choose.
Your figures stay in your browser. Nothing you enter is sent anywhere or stored. Reloading the page clears it.
What it can't do: it doesn't judge whether a formula is lawful, it can't know what your competitors will actually bid, and it only covers the four formula types below. Background: how your price becomes points.
How the formulas behave
The first three formulas score your price relative to the other bids, so your score changes when someone else's price changes. The price band scores you against fixed prices set in the documents, so other bids don't affect your price points. More on each formula, with worked examples: how your price becomes points.
When a formula can't be calculated
With a single bid, or bids at identical prices, lowest-to-highest divides by zero. With a €0 bid, the proportional and deviation formulas break down. The calculator doesn't fill those gaps by guessing. It stops and tells you why. If your documents say what to award in that case, tick the box and enter it, and the results will be marked as coming from the documents. A €0 bid can't be rejected just because it's €0. See abnormally low tenders.
Ties and rounding
The calculator never breaks a tie silently. If two bids end up with the same total, they share the rank and are flagged. Rounding can create a tie that the exact figures don't have, so use the rule in your documents.
"What one point is worth"
This is the price cut that would earn your bid one extra point, at your current price. It's a rate, so it's accurate for small changes. It isn't shown when it doesn't make sense: when you're already the cheapest, when you're the most expensive bid under lowest-to-highest, when your price score is already zero, or when your price is outside the band.
How the calculator is tested
The arithmetic uses exact fractions, not rounded decimals. Its tests reproduce every figure in our scoring guide exactly. They compare the results with a separately written program on 3,600 random cases, check basic properties on 5,000 more, and cover single bids, identical prices, €0 and negative prices, rounding and ties. See how we check.