# Free Retail Tools | Commmerce™

> Free GST calculator, barcode generator, invoice maker, marketplace commission calculator, and more. Built for Indian retailers by Commmerce.

Canonical: https://commmerce.com/tools/index.html

Free Tools for Indian Retailers 

# Calculate, generate, and plan.
No signup required.

 

GST tools, pricing calculators, inventory planners, and store setup tools. Built by the team behind Commmerce.

    

## GST & Tax

  [Popular

### GST Calculator

CGST + SGST / IGST breakdown from any price](gst-calculator.html)[Popular

### GST Invoice Generator

Professional GST invoices, download as PDF](gst-invoice-generator.html)[Popular

### HSN Code Finder

Search HSN codes and GST rates by product](hsn-code-finder.html)[### GSTIN Validator

Verify GSTIN format and checksum](gstin-validator.html)[New

### GST Late Fee Calculator

Late fee and 18% interest on a delayed GSTR-3B](gst-late-fee-calculator.html)[New

### GST TCS Calculator

TCS collected by Amazon/Flipkart on your marketplace sales](tcs-on-marketplace-sales-calculator.html)   

## Pricing & Profit

  [### Margin Calculator

Convert between margin and markup](margin-calculator.html)[### Selling Price Calculator

Reverse-calculate price from desired profit](pricing-calculator.html)[### Discount Calculator

Flat, percentage, and stacked discounts](discount-calculator.html)[New

### Buy X Get Y Calculator

Effective discount and margin of BXGY offers](buy-x-get-y-calculator.html)[### Marketplace Commission

Net earnings after Amazon/Flipkart fees](marketplace-commission.html)[New

### Payment Gateway Fee Calculator

MDR, GST, and net settlement on UPI, cards, wallets](payment-gateway-fee-calculator.html)[### COD Profit Calculator

Real profit after RTO returns](cod-profit-calculator.html)[New

### Website vs Marketplace

Savings from selling on your own site](website-vs-marketplace-calculator.html)[New

### Break-even & Ad Spend

Sales needed to break even on ads](break-even-calculator.html)[New

### EMI Calculator

Monthly EMI, interest, total payment](emi-calculator.html)[### Loyalty ROI Calculator

Revenue impact of a loyalty program](loyalty-roi-calculator.html)[New

### Food Cost & Menu Price

Menu price from recipe cost and target food cost](food-cost-menu-price-calculator.html)[New

### Customer Lifetime Value

Revenue and profit a customer brings over time](customer-lifetime-value-calculator.html)   

## Inventory & Shipping

  [New

### Multi-Store Fragmentation Cost

Model the monthly cost of unsynced stores and channels](multi-store-fragmentation-cost-estimator.html)[### Reorder Point Calculator

When to reorder and safety stock](reorder-point-calculator.html)[New

### EOQ & Safety Stock Calculator

Economic order qty, safety stock, reorder point](eoq-safety-stock-calculator.html)[### Inventory Days Calculator

How long current stock will last](inventory-days-calculator.html)[### Inventory Valuation

FIFO, LIFO, weighted average value](inventory-valuation.html)[### Volumetric Weight

Chargeable courier weight](volumetric-weight-calculator.html)[New

### Box Size Calculator

Right shipping box for your product](box-size-calculator.html)[New

### Shipping Cost Calculator

Estimate courier rates by pincode](shipping-cost-calculator.html)[New

### Purchase Order Generator

Send POs to your suppliers](purchase-order-generator.html)[### SKU Generator

Structured SKU codes for your catalog](sku-generator.html)[Popular

### Barcode Generator

EAN, Code 128, QR. Download PNG](barcode-generator.html)   

## Store Setup & Marketing

  [Popular

### QR Code Generator

Any link, WiFi, or contact into a scannable QR. Download PNG](qr-code-generator.html)[### UPI QR Generator

Branded UPI payment QR code](upi-qr-generator.html)[New

### QR Menu Generator

Scannable menu QR for restaurants](qr-menu-generator.html)[### WhatsApp Link Generator

wa.me link with prefilled message](whatsapp-link-generator.html)[New

### Google Review Link Generator

Direct 'write a review' link to collect more reviews](google-review-link-generator.html)[New

### UTM Link Builder

Tagged campaign URL that Analytics tracks correctly](utm-link-builder.html)[### Receipt Generator

Printable receipt for any sale](receipt-generator.html)[### Policy Generator

Privacy, refund, shipping, terms](policy-generator.html)[### Color Palette Generator

Brand palette from a base color](color-palette-generator.html)[New

### Font Pairing Tool

Heading + body font combinations](font-pairing-tool.html)[New

### Revenue Estimator

Estimate monthly and annual revenue](retail-revenue-estimator.html)[### Requirements Checklist

What to look for in retail software](retail-software-checklist.html)[Quiz

### Retail Stack Audit

How many tools are you using?](retail-stack-audit.html)   

## Web & SEO

  [### Meta Tag Generator

SEO and Open Graph tags for your pages](meta-tag-generator.html)[New

### Schema Markup Generator

Product, FAQ, business JSON-LD](schema-markup-generator.html)[New

### Open Graph Preview

Preview link shares on social](open-graph-preview.html)[New

### robots.txt Generator

Control how crawlers index your site](robots-txt-generator.html)[New

### Sitemap Generator

XML sitemap from your page URLs](sitemap-generator.html)[New

### Website SEO & Speed Checker

Audit SEO, speed, accessibility](website-audit-checker.html)[New

### DNS Record Checker

Look up A, CNAME, MX, TXT records](dns-record-checker.html)[### Domain Name Checker

Check store name availability](domain-checker.html)   

### Need more than free tools?

 

Commmerce is the Retail Operating System that automates all of this. POS, inventory, warehouse, loyalty, and AI in one platform.

 [See Pricing](https://commmerce.com/pricing)     [Book a demo](https://commmerce.com/schedule-demo/)