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Visit tool →Inventory Turnover Calculator
COGS over a period divided by average inventory value on hand.
Calculator
Inventory turnover
4.42x
Results are simplified estimates for educational purposes only and should not be treated as financial, accounting, legal, or tax advice. See our disclaimer for details.
Overview
Shows how fast cash cycles through stock—seasonal peaks or one-off buys will skew averages if you pick the wrong inventory baseline.
Formula
COGS ÷ average inventory value.
Example calculation
Using the default example values from the JSON seed for this tool:
- COGS over period
- 420000
- Average inventory value
- 95000
Result: 4.42x (Inventory turnover)
How to interpret this result
COGS ÷ average inventory value summarizes how quickly stock cycles through.
Seasonality, one-off buys, consignment exclusions, or channel pooling change what “average” means.
Higher turnover often means tighter days-on-hand—not automatically healthier cash without payables context.
When to use this calculator
- When cash feels stuck in bins and procurement wants a shorthand
- Before seasonality blows up average inventory if you freeze the wrong month
- When consignment stock should remain out of the inventory base
- When slow movers hide inside one blended SKU class
Rule of thumb
One-time buys or stocking for seasonality inflate average inventory and mute turnover.
Terms used in this calculator
- AOV
- Average order size: slice revenue divided by order count—with tax/shipping counted the same each month.
- Gross margin
- Sales minus COGS as a percentage of revenue—nothing below gross profit counted here.
Common mistakes
- Forgetting seasonal lifts that balloon average inventory.
- Counting inventory you technically do not own on consignment.
- Blending warehouses with radically different SKU economics.
What to do next
Hop to margin or product pricing calculators when slow stock ties to outdated cost assumptions.
How to improve this result
- Trim slow movers before stacking new products on the same shelf.
- Forecast lead times that throw off how fast inventory should turn.
- Separate channels when shared inventory pools mislead averages.
Recommended tools
Useful tools for this calculator
These tools are related to the topic of this calculator. Some links may be partner links.
ProfitWell
Pricing and retention resources for subscription businesses.
Visit tool →Shopify
Partner linkCommerce platform for building and scaling an online store.
Visit tool →FAQ
- SKU blends hiding slow movers?
- Blend hides dead stock—spot-check classes when cash feels tight.
- Seasonality?
- Average inventory across months you actually hold stock.
- Consignment inventory?
- Exclude balances you do not economically own.
- Related to days on hand?
- Invert mentally—higher turnover usually means fewer days tied in stock.
Related calculators
Average Order Value (AOV) Calculator
Revenue ÷ orders for coherent slice/time—watch tax and shipping conventions.
Open calculator →Gross Margin Calculator
Revenue minus cost of goods sold, expressed as percent of revenue.
Open calculator →Repeat Purchase Rate Calculator
Share of customers in your slice who bought more than once under your rules.
Open calculator →Affiliate disclosure
Disclosure: Some links on this page may be affiliate links. If you sign up or make a purchase through these links, FounderCalc may earn a commission at no extra cost to you. We only recommend tools that are relevant to the calculator topic.