Price Per Litre Calculator

Work out price per litre instantly with clear inputs, formula shown and shareable results.

About Price Per Litre Calculator

Comparing liquids means normalising to a litre, taking care with units — one is quoted in millilitres and the other in litres more often than not. That unit mismatch is exactly where shelf comparisons go wrong.

Formula

Price per litre

price per litre = price / volume in ml x 1000, or price / litres

Worked example

With the default values below, Price Per Litre Calculator returns Price per litre of $3.20. Change any input above and every figure here is recalculated in your browser.

Inputs used

Bottle price: 2.4
Bottle volume: 750 ml
Comparison price: 5.5
Comparison volume: 2 L

Results

Price per litre: $3.20
Comparison price per litre: $2.75
Difference per litre: $0.45
Better value: The comparison bottle is better value

Step by step

1Values used
2Price per litre
3Price per litre= 3.20
4Comparison price per litre= 2.75
5Difference per litre= 0.45
6Better value= The comparison bottle is better value

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 do small bottles cost so much more per litre?

Packaging and handling are a large share of the cost of a small unit, and convenience commands a premium. Ratios of two or three to one are common.

Does concentrate change the comparison?

Yes. Compare on made-up volume, not bottle volume, or a concentrate looks far more expensive than it is.