Online Seller Calculators

Online Seller Calculators: Amazon, Flipkart, Meesho Fees, Profit and Size Charts

Selling online in India is profitable only after commission, fixed and shipping fees, GST, returns and ads. These 54 tools calculate it all for Amazon, Flipkart, Meesho and your own store: profit per order, break-even ACoS and ROAS, TCS and TDS, inventory planning, listing and title checks, keyword clustering, and size chart generators for your product pages.

  • 54 free tools
  • No sign-up
  • Made for India (₹, Indian sizes)
  • Updated

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All online seller calculators

Amazon vs Flipkart vs Meesho Fee ComparisonSame product, three marketplacesE-commerce TCS & TDS Calculator (GST 0.5% + 194-O 0.1%)TCS 0.5% + TDS 0.1% on salesVolumetric Weight CalculatorL×B×H ÷ 5000 → chargeable kgRTO & COD Loss CalculatorMonthly cost of undelivered ordersMargin vs Markup CalculatorCost + price → margin % and markup %Selling Price & MRP CalculatorCost + target margin → price & MRPDiscount Impact on Profit CalculatorExtra units to cover a discountROAS, ACoS & Break-even CalculatorROAS, ACoS, break-evenReorder Point & Stock CalculatorWhen and how much to restockProduct Rating Target Calculator5-star ratings needed for targetReturn Rate Impact on Profit CalculatorTrue profit after returnsGST Calculator for Online SellersTaxable value, CGST/SGST or IGSTBreak-even Calculator for SellersOrders per month to stop losing moneyPackaging Cost per Order CalculatorBox + tape + filler + label per orderEOQ Calculator (Economic Order Quantity)Best order size, orders per yearInventory Turnover & Days CalculatorTurnover ratio and days of stockCombo / Bundle Offer Profit CalculatorBundle vs separate: profit and discountAd Budget Calculator for SellersClicks, spend and daily budgetCOD vs Prepaid Cost CalculatorCOD fee + RTO vs prepaid discountE-commerce Profit CalculatorNet profit per order, own storeGross, Contribution & Net Margin CalculatorGross, contribution and net marginPayment Gateway Fee CalculatorGateway fee + GST and settlementTACoS CalculatorTACoS, ACoS and organic shareCPC, CPA & CTR CalculatorCPC, CTR, CR, CPA and ROASConversion Rate CalculatorSessions to CR and revenue upsideProfit After Ads CalculatorProfit per ad sale, break-even ACoSFree Shipping Calculator for SellersExtra orders needed or new priceDropshipping Profit CalculatorProfit, ROI, break-even ROASSupplier Cost Comparison CalculatorLanded cost per unit, MOQ cashSafety Stock CalculatorSafety stock + reorder pointDead Stock CalculatorClearance cash vs holding costStockout CalculatorDays left and reorder deadlineGMROI CalculatorMargin earned per ₹1 of stockSales Forecast CalculatorNext month from last 6 monthsAmazon Listing Title Checker200 chars, banned symbols, repeatsListing Keyword Coverage CheckerFound vs missing keywordsProduct Schema GeneratorProduct JSON-LD with INR offerSize Chart GeneratorEditable size chart, PNG or PDFT-Shirt Size Chart GeneratorT-shirt chart: chest, length, sleeveKurta Size Chart GeneratorKurti chart: bust, waist, hip, lengthJeans Size Chart GeneratorJeans chart: waist, hip, inseamDress Size Chart GeneratorDress chart: bust, waist, hip, lengthSaree Blouse Size Chart GeneratorBlouse chart: bust, armhole, lengthHoodie Size Chart GeneratorHoodie chart: chest, length, sleeveShoe Size Chart GeneratorShoe chart: UK, US, EU, foot cmKids Size Chart GeneratorKids chart: age, height, chest, waistBaby Size Chart GeneratorBaby chart: weight, length, EU sizeBra & Lingerie Size Chart GeneratorBra chart: band, underbust, cupsKeyword Clustering ToolKeyword list to topic clustersSearch Intent CheckerKeywords to buyer intentProduct Title GeneratorBrand + features to a ready title

Frequently asked questions

How do I find my real profit per order?

Subtract product cost, platform fees, shipping, GST, payment fees, ads and expected return losses from the selling price.

What is a good ACoS?

Below your break-even ACoS (profit before ads ÷ price). Our ROAS and ACoS calculator works it out.

Do I need a size chart on my listing?

For clothing and footwear, yes: a clear size chart reduces returns. Make one with the size chart generator.

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Know about CouponTalk

CouponTalk is an Indian shopping research site founded by Hemant Kumar. We help you choose the right product, get the size right and pay a fair price, with buying guides, 248 free calculators, a price tracker and verified deals.

We stand out because

  • Made for India: prices in ₹, Indian sizes, and brands and stores you can buy from here.
  • Show the working: every calculator explains its formula and gives a worked example.
  • Real price history: each price shows when it was checked, so you know a deal is real.
  • Free for everyone: no sign-up, no paywall.

Our key focus areas

What makes us different

  • Not for sale: no brand can pay for a ranking or a "best" spot.
  • Checked by people: every guide and calculator is reviewed before it goes live.
  • Clear sources: RBI rules, GST rates and standard size charts, explained on each tool.
  • Honest limits: we show past prices and never promise future ones. Our editorial policy.

Affiliate disclosure: CouponTalk is reader-supported. We add affiliate links to some products and stores, and we may earn a commission when you click a link and buy, at no extra cost to you. Commissions never change what we recommend. Read our affiliate disclosure.

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