Free Product Comparison Calculator
Free product comparison calculator — compare profit margins, markup, and ROI across multiple products side by side. Find your most profitable SKUs instantly.
Profit Margin Calculator
Calculate profit margins from revenue and costs
Results Dashboard
Ready to Compare
Enter cost and selling price, then add products to the comparison table
Product Comparison
| Product | Cost | Price | Margin % | Profit | Actions |
|---|
Gross Margin
Net Margin
Markup %
Total Profit
ROI
Per-Unit Breakdown
Margin Gauge
Cost Breakdown
How to Use This Comparison Calculator
This tool handles the math instantly. Understanding what the numbers mean — and which product to bet on — takes a little more thought.
What the Comparison Calculator Shows You
Enter cost and selling price for each product. Hit Add Product. The comparison calculator builds a side-by-side table with margin %, profit per unit, and a summary showing your best-performing SKU.
Most sellers already know their best-selling product. The comparison calculator tells you something different: which product is actually most profitable. Those two answers are often not the same item.
It shows margin and dollar profit separately — because a lower-margin product at a higher price can still generate more absolute profit per sale. Both numbers matter.
Need the right price to hit a margin target? Use the reverse margin calculator to work backwards from a target, then bring that price in to compare products.
Real-World Example: Jewelry Seller
Three SKUs added to the comparison calculator — the results surprised her:
The necklace has the highest dollar profit per unit. The bracelet wins on margin %. The comparison calculator shows both — which one gets the ad budget depends on your specific volume and risk tolerance.
Margin vs. Markup vs. ROI: Which Metric to Use
The comparison calculator uses margin by default — the right starting point. Here's when each metric matters.
Suppliers quote markup. Your P&L uses margin. Mixing them up is a common and expensive mistake. Use the markup calculator when working from supplier quotes, then bring the result into the comparison calculator to rank products on equal footing.
ROI measures return on the capital invested in inventory. A fast-selling low-margin product can beat a slow-selling high-margin product on ROI because cash keeps cycling. Use it to check margin, then cross-check with ROI before deciding where to allocate inventory dollars.
Margin %
Markup %
ROI %
Comparison Analysis in Excel
The comparison calculator handles quick decisions. For 20+ SKUs with ongoing tracking, here's the Excel setup that mirrors what the comparison calculator does.
Column Structure for a Margin Comparison
Set up your spreadsheet to mirror this tool:
Sort by column H to find your actual profit drivers. Sort by column D to find pricing problems. Add conditional formatting to column D (green for high margin, red for low) and you've replicated the comparison calculator's core output in a format that tracks over time.
💡 Comparison Calculator vs. Excel
Use this tool for decisions — fast, no setup, no errors. Use Excel for records and monthly reviews where you want historical data. Both have a place; they answer different questions.
Three Industries, Three Insights
A specialty grocery store ran a product comparison across top 10 bestsellers. Bottled water sold 400 units/week at 18% margin. Their house-brand granola moved 60 units/week at 64% margin. The comparison calculator revealed granola generated more weekly profit despite 6x fewer units. They moved it to eye-level shelving. Granola velocity tripled.
A DTC brand ran their three hero products through the comparison calculator with actual COGS plus Shopify fees (2.6%) and Meta ad spend layered in via Additional Costs. The "bestseller" had 22% net margin. The least-promoted product had 58%. The results made the reallocation obvious.
A freelance web designer entered her three retainer packages into the comparison calculator: maintenance at 37.5% margin, SEO retainer at 71%, full-service social at 20%. The tool confirmed what she already suspected. She dropped the social package and shifted clients to SEO retainers — monthly profit up 34% with fewer hours. Check your break-even point after any pricing change.
Practical Tips for Better Product Comparisons
How to get the most accurate results from the comparison calculator — and what to do with the numbers once you have them.
Before You Run the Comparison Calculator
Platform fees, payment processing, per-unit shipping — these belong in the cost field or the Additional Costs section. A comparison calculator result based on wholesale cost only will flatter your margins.
Decide your floor. If your business needs 35% to be sustainable, any comparison calculator result below that gets reviewed for repricing or removal. The comparison calculator is most useful when you know what number you're filtering for.
Costs change. Supplier prices go up slowly. A comparison calculator result from six months ago might not match today's reality. Quarterly product comparison audits catch COGS creep before it shows up in your P&L.
After the Comparison Calculator Runs
The same product sold direct vs. through Amazon needs its own comparison calculator entry. A $50 product at 55% margin direct becomes 38% margin via Amazon after FBA fees. Run separate entries for each channel — then decide where to push volume.
Before committing to inventory, enter your estimated cost and target price into the comparison calculator alongside your existing products. If the new SKU's margin doesn't beat your current average, it needs a higher price or lower cost. The comparison calculator makes this clear before you've ordered a single unit.
Run each product through the comparison calculator at your planned sale price before you commit to a discount. If a 20% discount drops a product below your margin floor, either shorten the sale window or exclude that SKU. Black Friday surprises are often just math that wasn't done in advance.
Find Your Most Profitable
Products Today
Use the free product comparison calculator to rank every SKU by margin. No signup, no spreadsheet — just clear answers in seconds.
Open the Comparison Calculator — FreeFrequently Asked Questions
Common questions about the product comparison calculator, metrics, and how to use the results.