Profit Margin
Use this for a bottom-line margin with all expenses included. Use contribution margin when you want to subtract only variable costs.
The business numbers desk / 33 calculators
A clearer view of your bottom line.
Work through pricing, profit, and growth decisions with straightforward calculators. See the formula, check the assumptions, and make the next move with context.
No account required. Formulas and assumptions included.
Before you spend
the next dollar.
- Order revenue
- $100.00
- Product cost
- - $30.00
- Shipping + fulfillment
- - $10.00
- Fees + variable costs
- - $5.00
- Available before ads
- $55.00
Break-even ROAS$100 / $55 =
1.82xRounded example, not a target. Covers the supplied variable costs and ads, not fixed overhead or desired profit.
Replace the example with your numbers01 / Start with the question02 / Make costs explicit03 / Keep the answer in context
Three useful starting points
What are you deciding?
Maximum CAC
Use this to set an affordable acquisition ceiling from order economics. Use CAC to measure what you actually spent per new customer.
LTV:CAC
Use this when you already have an LTV estimate and CAC. Use the customer lifetime value calculator first if you need a simplified recurring-revenue LTV estimate.
The complete tool index
A desk for every decision.
33 calculators, organized by the question behind the number.
Ecommerce & profit
Understand pricing, order economics, and the gap between what you charge and what you keep.
Break-Even ROAS
Find the revenue-to-ad-spend ratio that uses up an order's contribution after product, shipping, and transaction costs.
Open calculator: Break-Even ROASMaximum CAC
Set a first-order acquisition budget after subtracting variable costs and the profit you want to preserve.
Open calculator: Maximum CACProfit Margin
Calculate net profit as a share of revenue after deducting the full cost total you supply.
Open calculator: Profit MarginMarkup
Measure the increase from unit cost to selling price as a percentage of cost, not as a margin on revenue.
Open calculator: MarkupContribution Margin
Find the percentage of revenue remaining after variable costs to support fixed expenses and profit.
Open calculator: Contribution MarginProduct Profit
Subtract itemized product, delivery, transaction, advertising, and other costs from the matching sales revenue.
Open calculator: Product ProfitBreak-Even Units
Find the minimum whole units needed to cover fixed costs at a specified price and variable cost per unit.
Open calculator: Break-Even UnitsAverage Order Value
Divide net order revenue by completed orders to measure average basket revenue for a consistent sales cohort.
Open calculator: Average Order ValueDiscount
Apply a single percentage discount to an original price and calculate the remaining selling price.
Open calculator: DiscountInventory Turnover
Compare cost of goods sold with average inventory at cost to measure stock turnover during a defined period.
Open calculator: Inventory TurnoverGross Margin
Calculate the revenue share left after cost of goods sold, before operating expenses.
Open calculator: Gross MarginBreak-Even Price
Find the unit price needed to recover fixed costs and variable unit cost at a chosen sales volume.
Open calculator: Break-Even PriceMarketing returns
Put ad spend and revenue in the context of actual profitability.
ROAS
Measure attributed revenue per unit of advertising spend with an explicit revenue-to-spend ratio.
Open calculator: ROASCAC
Calculate fully scoped acquisition spending per newly acquired paying customer, rather than cost per lead or order.
Open calculator: CACCPM
Normalize media spending to the cost of 1,000 reported impressions for a defined campaign and placement.
Open calculator: CPMCPC
Calculate average advertising cost for each click using a consistent click definition and reporting window.
Open calculator: CPCConversion Rate
Measure the percentage of eligible visitors who complete one defined conversion during the selected window.
Open calculator: Conversion RateCPA
Measure advertising cost per attributed lead, signup, purchase, or other explicitly defined conversion action.
Open calculator: CPACTR
Calculate clicks as a percentage of eligible impressions using a single consistent click event definition.
Open calculator: CTRMER
Compare total business revenue with total scoped marketing spending without assigning individual sales to channels.
Open calculator: MERAd Profit
Estimate revenue left after product, fulfillment, transaction, and advertising costs for one campaign scope.
Open calculator: Ad ProfitSaaS & retention
Connect recurring revenue, customer retention, and long-term customer economics.
LTV:CAC
Compare contribution-based customer lifetime value with acquisition cost using matching customer and cost definitions.
Open calculator: LTV:CACMRR
Estimate normalized monthly recurring subscription revenue from paying customer count and monthly price per customer.
Open calculator: MRRARR
Annualize a current monthly recurring revenue run rate without assuming future growth or retention changes.
Open calculator: ARRCustomer Churn
Measure the share of customers present at the start of a period who leave during that same period.
Open calculator: Customer ChurnNet Revenue Retention
Track recurring revenue retained from an opening customer cohort after churn, downgrades, and expansion, excluding new customers.
Open calculator: Net Revenue RetentionCustomer Lifetime Value
Estimate contribution-based subscription LTV from monthly ARPU, gross margin, and a positive steady-state monthly customer churn rate.
Open calculator: Customer Lifetime ValueARPU
Calculate period revenue per average active user with a stated population and consistent revenue window.
Open calculator: ARPURevenue Churn
Measure recurring revenue lost from an opening customer cohort as a percentage of its starting revenue.
Open calculator: Revenue ChurnGross Revenue Retention
Calculate the recurring revenue retained from an opening cohort before expansion or new-customer revenue.
Open calculator: Gross Revenue RetentionSaaS Quick Ratio
Compare recurring revenue inflows from new and expanding customers with losses from churn and contraction.
Open calculator: SaaS Quick RatioRule of 40
Add a SaaS revenue growth percentage and profit margin percentage as a transparent combined indicator.
Open calculator: Rule of 40Growth Rate
Measure percentage change from a prior comparable revenue period to the current period.
Open calculator: Growth RateHow to use the desk
Useful arithmetic.
Better questions.
A precise answer to the wrong question is still the wrong answer. Give the calculation a clear scope first.
Read the methodologyChoose one decision.
Set a price, review ad spend, or compare customer economics. Pick the calculator whose definition matches that task.
Keep the inputs consistent.
Use one currency, one time window, and one cost scope. Check what the formula includes and what it leaves out.
Test the assumption that could change it.
Try a higher cost or lower revenue. Read the limitations before turning the result into a budget or forecast.
Notes from the desk
Read beyond the result.
Margin vs. markup: choose the right pricing base
Compare margin and markup with a cost-of-40 example, convert between them, and see how discounts change what a sale leaves behind.
ROAS vs. profit: what ad revenue leaves behind
Work from attributed revenue to contribution, calculate a break-even ROAS, and distinguish a campaign multiple from business profit.
Customer economics: connect CAC, LTV, and retention
Match acquisition cost to contribution LTV, stress-test monthly churn, and separate a lifetime ratio from cash payback.