Nikhil Sharma Tools
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Is your Shopify store actually profitable?

Drop in last month's numbers. Get your ROAS, MER, conversion rate, and AOV, plus a blunt verdict on each. No dashboard, no login, no fluff.

More free tools

AI Crawler Checker NEW
Paste your robots.txt and see which AI shopping crawlers (ChatGPT, Perplexity, Google AI) can actually reach your store. Plus a copy-ready fix.
llms.txt Generator for Shopify NEW
Generate a clean llms.txt so AI agents describe your store the way you want, not the way Shopify's default does.
Discount & Pricing Calculator
Check what a discount really does to your margin once shipping, fees, and marketing costs are in.
DIM Weight Calculator NEW
FedEx, UPS, and USPS dimensional weight. See how much of your shipping bill is paying for air, and the box size that fixes it.
Free Shipping Threshold Calculator NEW
$50 or $75? Find the threshold where the margin math actually works instead of guessing.
Reorder Point Calculator NEW
When to place the PO before you stock out and drop off Google and AI shopping surfaces.
Product Schema Generator NEW
Valid Product JSON-LD with GTIN, offers, and availability, so ChatGPT and Google parse your products instead of guessing.
The AI Shopping Checklist (PDF)
The exact robots.txt, feed, and schema fixes to get your store surfaced in ChatGPT, Perplexity, Google AI, and Gemini. Free.

Understanding the metrics

ROAS (Return on Ad Spend): Revenue generated per dollar spent on ads.

MER (Marketing Efficiency Ratio): Total revenue divided by total ad spend. The honest number when attribution is messy.

Conversion Rate: Percentage of visitors who complete a purchase.

AOV (Average Order Value): Revenue divided by number of orders.

Ad Cost per Purchase: Ad spend divided by purchases. Compare it to your margin per order, not to a benchmark.

Common questions

What is a good ROAS for Shopify stores?
A ROAS of 4:1 is generally considered good. It varies by industry and price point: high-ticket items can be profitable at a lower ROAS, low-margin products need a higher one. The number that matters is your break-even ROAS, which depends on your margin.
How do I calculate MER for my Shopify store?
Total revenue divided by total marketing spend. $100,000 revenue on $20,000 spend is a MER of 5.0. When pixel attribution gets fuzzy, MER is the number I trust.
How do I check if my Shopify store is profitable?
Revenue minus everything: product costs, marketing, platform fees, shipping. Use ROAS and MER for marketing efficiency, and track profit margin percentage. 20-30% net is healthy for most DTC stores.
How do I check if my Facebook ads are efficient?
Watch ROAS, CPA, CTR, and conversion rate, and sanity-check them against MER. If in-platform ROAS looks great but MER is falling, the platform is claiming orders it didn't drive. I wrote about diagnosing this in Facebook ads not performing.

Read next on the blog

Nikhil Sharma

Who built these

I'm Nikhil Sharma. I run e-commerce operations for a US Shopify brand full time: the ads, the email, the fulfillment stack, the FedEx invoices. Top Rated Plus on Upwork. These tools are the spreadsheets I kept rebuilding for myself, turned into pages anyone can use.

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