Unit Price Comparator
Compare unit prices across products to find the best deal and save money shopping.
Try an example
Compare Items
Result
About Unit Price Comparator
The Unit Price Comparator ranks two or more package sizes by their real cost per 100 g, 100 mL or piece, so the cheapest shelf label is not mistaken for the best value. Enter each item's price and quantity in g, kg, oz, lb, mL, L, fl oz, gallons, pieces, packs or dozens; it converts everything to a common base, marks the winner and shows how much more each rival costs in percent. It never ranks weight against volume or count, and the comparison runs in your browser.
Use Cases
How to use
Fill in the first row: Name, Price and Quantity, then choose its Unit from the Weight, Volume or Count groups (g, kg, oz, lb, mL, L, fl oz, gal, pc, pack, dz).
Complete the second row the same way, since at least two priced items are needed, and set the currency selector next to Compare Items to the euro, dollar, pound or yen symbol.
Click + Add item to compare a third or fourth size, or the X button on a row to drop it; the Try an example buttons Cereals, Drinks and Bulk Packs load ready-made data.
Read the Result panel, where items are ranked cheapest first and each line shows the price per 100 g, 100 mL or 100 pc.
Check the red percentage on the losing rows to see how much more expensive they are than the winner marked Best value.
Press Copy to put the ranked list of unit prices on your clipboard for your shopping notes.
Pro Tips
- Enter your values carefully — small differences in inputs can lead to large changes in the Unit Price Compare result, especially for long time periods.
- Use the Unit Price Compare to compare multiple scenarios side by side. Open the tool in several tabs to see how different assumptions impact your outcome.
- Bookmark this Unit Price Compare and return whenever your situation changes — small updates in income, rates, or expenses are easy to recompute.
- Export or copy the result before closing the tab. Since the Unit Price Compare stores no data server-side, your inputs reset when you navigate away.
- Combine this Unit Price Compare with our other financial tools (loan, tax, budget calculators) for a more complete financial picture.
Frequently Asked Questions
Yes. The Unit Price Compare is 100% free, with no signup, no paywall, no limits, and no watermarks on results. You can use it as often as you need.
No. The Unit Price Compare runs entirely in your browser. Your inputs stay on your device and are never transmitted to our servers, guaranteeing privacy.
The Unit Price Compare uses industry-standard formulas and returns mathematically precise results based on the inputs you provide. Always verify with a professional advisor for major decisions.
Yes. The Unit Price Compare is fully responsive and works on iOS, Android, and all modern mobile browsers with no app install required.
After the initial page load, most calculations run offline because the logic runs in JavaScript on your device. If you lose connection mid-session, you can usually keep calculating.
While the Unit Price Compare provides accurate computations, it does not replace professional advice. For tax, legal, medical, or major investment decisions, consult a certified advisor.