Cost Per Hundred (CPH) Calculator
This tool helps you compare the true cost of items by standardizing their price to a 'cost per 100 units'. It's the easiest way to see which bulk package offers the best value.
Enter the Total Cost of a package and the Total Quantity of items in it. The calculator will instantly show you the cost per 100 items.
Enter Your Item's Details
10 Real-Life CPH Examples
Click on any example to see how the Cost Per Hundred is calculated in practice.
Example 1: Office Paper
Scenario: You need to buy paper. A pack of 500 sheets costs $8.99.
1. Known Values: Total Cost = $8.99, Total Quantity = 500 sheets.
2. Formula: Cost Per 100 = (Total Cost / Total Quantity) * 100
3. Calculation: ($8.99 / 500) * 100 = $0.01798 * 100
4. Result: The cost is $1.80 per 100 sheets.
Example 2: Comparing Screws (Value Check)
Scenario: You need screws for a project. Box A has 150 screws for $6.00. Box B has 500 screws for $15.00.
Box A Calculation: ($6.00 / 150) * 100 = $4.00 per 100 screws.
Box B Calculation: ($15.00 / 500) * 100 = $3.00 per 100 screws.
Conclusion: Box B, the larger package, offers better value per screw.
Example 3: Grocery Shopping (Cereal)
Scenario: A 350-gram box of cereal costs $4.20. You want to find the cost per 100 grams.
1. Known Values: Total Cost = $4.20, Total Quantity = 350 grams.
2. Calculation: ($4.20 / 350) * 100 = $0.012 * 100
3. Result: The cost is $1.20 per 100 grams.
Example 4: Craft Beads
Scenario: A bag with 1,200 craft beads costs $11.40.
1. Known Values: Total Cost = $11.40, Total Quantity = 1200 beads.
2. Calculation: ($11.40 / 1200) * 100 = $0.0095 * 100
3. Result: The cost is $0.95 per 100 beads.
Example 5: Liquid Volume (Juice)
Scenario: A 1750 ml bottle of juice costs $5.50. Find the cost per 100 ml.
1. Known Values: Total Cost = $5.50, Total Quantity = 1750 ml.
2. Calculation: ($5.50 / 1750) * 100 ≈ $0.00314 * 100
3. Result: The cost is approximately $0.31 per 100 ml.
Example 6: Business Cards
Scenario: An online printer offers 2,500 business cards for a promotional price of $50.
1. Known Values: Total Cost = $50.00, Total Quantity = 2500 cards.
2. Calculation: ($50.00 / 2500) * 100 = $0.02 * 100
3. Result: The cost is $2.00 per 100 cards.
Example 7: Fabric Length
Scenario: A roll of fabric is 320 cm long and costs $24. What is the price per 100 cm (per meter)?
1. Known Values: Total Cost = $24.00, Total Quantity = 320 cm.
2. Calculation: ($24.00 / 320) * 100 = $0.075 * 100
3. Result: The cost is $7.50 per 100 cm (or $7.50 per meter).
Example 8: Vitamin Tablets
Scenario: A bottle containing 180 vitamin tablets costs $22.50.
1. Known Values: Total Cost = $22.50, Total Quantity = 180 tablets.
2. Calculation: ($22.50 / 180) * 100 = $0.125 * 100
3. Result: The cost is $12.50 per 100 tablets.
Example 9: Small Purchase (Photo Prints)
Scenario: A small batch of 25 photo prints costs $7.00. What would be the standardized cost per 100?
1. Known Values: Total Cost = $7.00, Total Quantity = 25 prints.
2. Calculation: ($7.00 / 25) * 100 = $0.28 * 100
3. Result: The standardized cost is $28.00 per 100 prints.
Example 10: Digital Goods (API Calls)
Scenario: A developer plan offers 50,000 API calls for $10.00.
1. Known Values: Total Cost = $10.00, Total Quantity = 50,000 calls.
2. Calculation: ($10.00 / 50000) * 100 = $0.0002 * 100
3. Result: The cost is $0.02 per 100 API calls (or 2 cents per 100 calls).
Frequently Asked Questions (FAQs)
1. What exactly is "Cost Per Hundred" (CPH)?
CPH is a unit price that tells you how much 100 items of something would cost. It's used to make fair comparisons between products sold in different package sizes (e.g., comparing a box of 60 items to a box of 250).
2. How do I use this calculator?
Simply enter the total price you paid into the "Total Cost" field and the total number of items you received into the "Total Quantity" field. Click "Calculate" to see the result.
3. Why is CPH a useful metric for shopping?
It removes the confusion of package size. A larger, more expensive box might actually be cheaper per item. CPH reveals the true value, helping you make smarter purchasing decisions and save money.
4. Can I use this for units other than individual items?
Absolutely. The "quantity" can be anything: grams, milliliters, inches, sheets of paper, etc. If you enter the cost of a 750ml bottle, the tool will calculate the cost per 100ml.
5. Why did I get an error?
An error will appear if you leave a field blank or enter zero or a negative number. Both the cost and the quantity must be positive numbers for the calculation to be meaningful.
6. Should the "Total Cost" include sales tax?
For the most accurate comparison between items, be consistent. Either use the pre-tax price for all items you are comparing, or use the final price including tax for all of them.
7. How is the calculation performed?
The formula is simple: CPH = (Total Cost / Total Quantity) * 100. The calculator first finds the cost of a single item and then multiplies it by 100.
8. Can I change the currency symbol?
Yes. The dollar sign ($) is just for display. You can edit the plugin's code (specifically the HTML `label` and the JavaScript result string) to use any currency symbol like €, £, or ¥.
9. What's the difference between CPH and CPM (Cost Per Thousand)?
They are similar concepts. CPH is cost per 100, while CPM (Cost Per Mille) is cost per 1000. CPH is common for physical goods, while CPM is often used in advertising (cost per 1000 impressions) and for items sold in very large quantities (like bricks or seeds).
10. Will this tool slow down my website?
No. This is a lightweight, client-side calculator. All calculations happen instantly within the user's web browser and do not require any communication with your web server, ensuring no impact on your site's performance.
