Price Per Unit Calculator
Real unit pricing in seconds.
Calculate price per unit for any product. Compare pack sizes accurately. Free calculator with the working shown and a worked example.
What this tool does
This tool calculates price per unit given total price and quantity. Works for any unit (grams, litres, pieces). Shows per-unit and per-100-unit prices.
Enter Values
Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Price per unit reveals true value when comparing different pack sizes. A 500g cereal box at 3.50 has price per 100g 0.70. A 1kg box at 6.00 has price per 100g 0.60 - 14% cheaper per unit despite 2.50 higher total. This calculator handles any unit type.
Simple but useful. Supermarkets often display unit pricing but not always prominently. Use this for bulk comparisons, shrinkflation detection (price same but grams down), and multipack deal verification.
The tool accepts any unit - grams, litres, pieces, metres. Just enter total price and quantity; get price per unit and per 100 units for scale comparison.
Quick example
With total price of 6 and quantity of 1,000 (plus unit label of 0), the result is 0.01. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Total Price, Quantity, and Unit Label (0=grams, 1=litres, 2=pieces). Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.
What's happening under the hood
Price per unit = total / quantity. Per 100 units = per unit × 100. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
Why run the calculation
Utility bills creep. Small annual increases stack into meaningful differences over a decade. Running this once a year and switching providers when the gap widens is one of the easiest ways to keep household costs in check.
What this doesn't capture
Usage varies month-to-month; tariffs change; discounts come and go. The figure here is a clean baseline — your actual annual bill will fluctuate around it. Use the calculation to benchmark providers, not as a prediction of a specific bill.
£6 £ for 1,000 units = $0.01/unit.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Price per unit = total / quantity. Per 100 units = per unit × 100.
References
Frequently Asked Questions
When does bulk win?
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