Free Amazon seller calculators
Every calculator and tracker Nova publishes, grouped by the decision it helps you make. All free, no signup, current 2026 fee tables.
Fee and profit calculators
Work out what a SKU actually earns once Amazon has taken its cut.
Amazon FBA calculator
Referral, fulfilment and storage fees on any ASIN, with the net profit that is left.
Profit and margin calculator
Margin, contribution and break-even on a single unit, COGS included.
Referral fee calculator
Category-by-category referral rates, including the tiered and minimum-fee cases.
Storage fee calculator
Monthly and long-term FBA storage costs by size tier and season.
Reimbursement calculator
Size the reimbursement line in your P&L from lost and damaged units.
Break-even calculator
The price and unit volume where a product stops losing money.
Advertising calculators
Translate ad spend into the numbers your P&L actually reports.
ACoS calculator
Advertising cost of sale, plus the break-even ACoS your margin can carry.
TACoS calculator
Total ad cost of sale against total revenue, organic sales included.
ROI calculator
Return on the money tied up in each unit, not just the margin percentage.
Fulfilment and listing tools
Decisions that change the cost base rather than the price.
FBA vs FBM calculator
Compare the two fulfilment models on the same product and shipping cost.
Title optimizer
Check a listing title against Amazon's current length and formatting rules.
Trackers and dashboards
Where the one-off calculation becomes something you watch over time.
BSR tracker
Best Sellers Rank history on your own ASINs, with the trend behind it.
Sales tracker
Daily sales by SKU, marketplace and tag.
Product performance tracker
Unit economics, traffic and conversion side by side per ASIN.
Reimbursement tracker
Reimbursements and refunds as a reported line in your profit and loss.
COGS tracker
Landed cost per unit, kept current as your supplier prices change.
Financial dashboard
One reconciled view of revenue, fees, spend and profit.
Marketplace analytics
Performance split across the 21 Amazon marketplaces Nova supports.
Seller dashboard software
The full dashboard once spreadsheets stop scaling.
Beyond the calculators
A calculator answers one question about one product. Nova answers the same question across the whole catalogue, every day, on reconciled data.