AMMERZE

Free seller tools

Know your real numbers.

Free calculators and tools for multi-channel sellers. Find the profit hiding behind RTOs, ad dashboards and courier bills, and get every product photo listing-ready.

All tools

Free

RTO & Margin Calculator

See what each order really earns after fees, shipping, GST and the orders that come back.

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Free

Cross-Channel True ROAS Calculator

Compare what Meta, Google and marketplace ads claim with what your orders actually made.

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Free

Volumetric Weight Calculator

Find the weight your courier will bill, and how much box you can trim to drop a slab.

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Free

E-commerce Image Resizer

Resize product photos for Amazon, Flipkart, Myntra, Shopify and Instagram in one go, in your browser.

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Coming soon

Multi-Channel Listing & Copy Generator

Turn one product brief into titles, bullets and descriptions for every channel.

We're building this one next

  • Instant

    Results update as you type. No sign-up, no email.

  • Private

    Everything runs in your browser. Nothing you enter is stored.

  • Made for India

    GST, RTO, COD and Indian courier rules built in.

Beyond calculators

Stop calculating.
Start seeing it live.

Ammerze keeps stock, orders, returns, labels and GST books in sync across Amazon, Flipkart, Shopify and WooCommerce. Try every Growth feature free for 14 days, with no card or UPI needed.

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