Practical tools for serious marketplace sellers
Profit, PPC, inventory and product research spreadsheets you can own outright.
Built for working sellers
Useful numbers. Clear next actions. No recurring software bill.
CalcCommerce turns the everyday maths behind marketplace selling into practical spreadsheets and checklists you can keep and reuse.
Profit
Know the margin first
Work from contribution, break-even ACOS and realistic costs before increasing ad spend.
Advertising
Use evidence, not guesswork
Review CTR, CPC, conversion, ACOS and ROAS with consistent action rules.
Operations
Plan stock and cash
Track days of cover, reorder points, lead time and the cash required for replenishment.
Free seller tools
Useful calculators before you spend another pound
Check PPC limits, per-unit profit and reorder timing with practical tools built for Amazon sellers.
PPC
Break-Even ACOS Calculator
Find break-even ACOS, ROAS and a target ACOS based on your own costs.
Calculate ACOS →Profit
FBA Profit Margin Calculator
Estimate profit after VAT, landed cost, Amazon fees and advertising.
Calculate profit →Inventory
Reorder Point Calculator
Turn sales velocity, lead time and safety stock into a reorder point.
Calculate reorder point →
Free resource
Audit your Amazon PPC before spending more
Download our free 3-page PPC quick-audit checklist and use the same decision framework behind our paid tools.
Seller guides
Amazon PPC Search-Term Report: A Worked Example
A campaign at 27.3% ACOS can hide a search term at 60%. Follow this two-row example to see what the averages miss and what to investigate next.
Amazon PPC Search-Term Report: A Worked Example
Amazon PPC Search-Term Report: A Worked Example
|CalcCommerce
Amazon Seller Spreadsheet Templates: 5 Excel Tools Worth Using
Five useful Amazon seller spreadsheet templates for profit, PPC, inventory, product research and KPI tracking.
Amazon Seller Spreadsheet Templates: 5 Excel Tools Worth Using
Amazon Seller Spreadsheet Templates: 5 Excel Tools Worth Using
|CalcCommerce
Amazon PPC Budget: How to Spot Campaigns Losing Sales to Budget Caps
A practical way to decide which Amazon PPC campaigns deserve more budget and which should be fixed before receiving another pound.
Amazon PPC Budget: How to Spot Campaigns Losing Sales to Budget Caps
Amazon PPC Budget: How to Spot Campaigns Losing Sales to Budget Caps
|CalcCommerce