Calculators

Run the numbers before you scale the spend

Four simple calculators with the formulas written out. Defaults are illustrative INR figures — replace them with your Shopify, ads and courier numbers.

RTO cost calculator

Estimate monthly RTO loss from COD share, RTO rate, shipping both ways and product cost. Built for Indian D2C brands shipping with Shiprocket and similar couriers.

Contribution margin calculator

Work out contribution per order after COGS, shipping, payment fees, discounts, expected RTO and ads. The number a D2C founder should watch instead of revenue.

ROAS, MER and CAC calculator

Enter channel spend, revenue and new customers to see platform ROAS, blended MER and CAC. Use it when Meta and Google both claim the same orders.

Support cost calculator

Estimate monthly support cost from ticket volume, handle time and loaded agent cost, then see the effect of automating a share of WISMO tickets.

Shelf Watch pricing calculator

SKU × city × frequency pricing lives on the Shelf Watch page.