Boneyard Tools

Ecommerce Tools

Seller math: marketplace fees, profit, margin and shipping calculators for Amazon, Etsy, eBay and more.

Ecommerce Tools

Amazon FBA Fee Calculator

Estimate Amazon FBA profit per unit. Enter price, product cost, referral fee and fulfillment fee to see net proceeds, profit and margin.

Ecommerce Tools

Average Order Value Calculator

Calculate average order value fast. Enter total revenue and number of orders to get AOV, plus revenue per visitor when you add traffic.

Ecommerce Tools

Average Order Value Calculator

Calculate average order value from revenue and order count, then reverse it to project the revenue a target AOV and order volume would bring in.

Ecommerce Tools

Box Fill Calculator

Calculate how many small items fit in a box. Enter box and item sizes to get items per length, width and height and the total grid pack count.

Ecommerce Tools

Break-Even ROAS Calculator

Find the break-even ROAS and ACoS for your ads from your gross margin. Add a target profit margin to get the ROAS you need to stay profitable.

Ecommerce Tools

Bundle Pricing Calculator

Price a product bundle in seconds. Add items and a discount to see the bundle price, the customer saving, and profit when you enter unit costs.

Ecommerce Tools

Cart Abandonment Rate Calculator

Calculate your shopping cart abandonment rate from carts created and completed purchases. See the abandonment rate, completion rate and carts lost.

Ecommerce Tools

Container Load Calculator

See how many units fit in a 20ft, 40ft or 40ft high cube container. Enter unit volume and packing efficiency to get usable volume and unit count.

Ecommerce Tools

Customer Acquisition Cost Calculator

Calculate customer acquisition cost from your sales and marketing spend and new customers, then add lifetime value to see your LTV to CAC ratio.

Ecommerce Tools

Customer Lifetime Value Calculator

Calculate customer lifetime value from average order value, purchase frequency and customer lifespan, with an optional gross margin for profit-based LTV.

Ecommerce Tools

Dimensional Weight Calculator

Find dimensional weight and billable weight for any parcel. Enter length, width, height and actual weight to see DIM weight and what carriers bill.

Ecommerce Tools

Discount Chain Calculator

Apply stacked or sequential discounts to a price and see the real total. Stacking 20% then 10% is 28% off, not 30%. Free, accurate and private.

Ecommerce Tools

Discount ROI Calculator

See if a sale actually makes money. Compare profit with and without a discount and find the unit volume your promo must hit to break even.

Ecommerce Tools

eBay Fee Calculator

Calculate eBay seller fees and profit. Enter your item price, shipping and cost to see the final value fee, net proceeds and margin instantly.

Ecommerce Tools

Etsy Fee Calculator

Work out Etsy seller fees, net proceeds and profit. Enter your price, shipping and item cost to see listing, transaction and payment processing fees.

Ecommerce Tools

Freight Class Calculator

Estimate NMFC freight class from shipment density. Enter weight and box dimensions to get cubic feet, density and the matching LTL class.

Ecommerce Tools

Girth Calculator

Calculate package girth and length plus girth to check carrier size limits. Enter length, width and height to see if a parcel is within the limit.

Ecommerce Tools

Inventory Turnover Calculator

Calculate your inventory turnover ratio and days inventory outstanding. Enter COGS and average inventory to see how fast your stock sells.

Ecommerce Tools

Marketplace Fee Comparison

Compare seller fees and net payout across Etsy, eBay, Amazon and Shopify for one sale. Enter price, shipping and cost to see which marketplace pays you most.

Ecommerce Tools

Pallet Calculator

Calculate how many boxes fit on a pallet. Enter box and pallet size plus a stack height to get boxes per layer, layers and total boxes.

Ecommerce Tools

PayPal Fee Calculator

Calculate PayPal fees and your net payout, or work out what to charge so you receive an exact amount. Editable fee percent and fixed fee.

Ecommerce Tools

Print on Demand Profit Calculator

Work out your real print on demand profit per sale. Enter price, base cost, platform and payment fees to see profit, margin and break-even price.

Ecommerce Tools

Product Margin Calculator

Work out the true net margin on a product after cost, shipping and marketplace fees. Enter your numbers to see profit, margin and markup instantly.

Ecommerce Tools

Reorder Point Calculator

Find the inventory level that should trigger a new order. Enter daily demand, lead time and safety stock to get your reorder point in seconds.

Ecommerce Tools

Return on Ad Spend Calculator

Calculate return on ad spend from revenue and ad spend. See ROAS as a ratio, and add your gross margin to find the break-even ROAS you need to profit.

Ecommerce Tools

Shipping Cost Calculator

Estimate parcel shipping cost using actual and dimensional weight. Enter size, weight and your carrier rates to see the billable weight and total.

Ecommerce Tools

Shopify Profit Calculator

Work out your real Shopify profit per order. Enter price, product cost, shipping and payment fees to see net profit and margin instantly.

Ecommerce Tools

Stripe Fee Calculator

Calculate Stripe processing fees and your net payout. Enter a charge to see the fee, or gross up to net an exact amount. Editable rate and fixed fee.