THE SELLER’S NUMBER DESK
Price with
purpose.
See what stays after costs, shipping and fees. Build your next price around the whole order.
Seller Profit Calculator
Find profit after costs and fees.
Change the example inputs to your own values. Check the method and limitations below.
YOUR BUSINESS TOOLKIT
From pricing to the shipping label.
Seller Profit Calculator
Find profit after costs and fees.
Open tool →Profit Margin Calculator
Separate margin from markup.
Open tool →Break-Even Price Calculator
Find the price for target profit.
Open tool →Dimensional Weight Calculator
Compare actual and dimensional weight.
Open tool →Read the Price an Online Order for Profit, Not Just Revenue guide →
Build the price
from the inside out.
Materials or wholesale price.
Packaging, postage and selling fees.
The profit you want each order to contribute.
THE PRICING NOTEBOOK
Margin and markup tell different stories.
Use a consistent cost basis and read your marketplace’s fee rules before setting a final price.
THE SELLER KNOWLEDGE DESK
Seller profit calculators for the full order picture
A sale price is easy to see; the costs behind it are easier to miss. Krevo helps small sellers separate profit, margin, target pricing and shipping-weight calculations. Enter costs from your own order records and fees from your selling platform. The tools make a simple pricing model visible so you can identify what it includes and what still needs a separate line, such as returns, advertising or a charge on shipping.
Calculate profit after the entered costs
The seller profit calculator subtracts item cost, postage and packaging, and a percentage fee from the sale price. Its percentage fee is applied to the item sale price. Confirm whether your platform charges fees on shipping, tax or another amount, and include fixed charges in the appropriate cost input when they belong to the order.
Separate margin from markup
Profit margin expresses the difference between price and cost as a share of the selling price. Markup expresses that difference as a share of cost. The margin calculator shows both measures using the values entered. Decide what your cost figure includes before comparing products; a materials-only margin is different from a margin after all order costs.
Find a price for a profit target
The break-even price calculator combines fixed costs and a target profit, then accounts for an adjustable percentage fee. A zero target models the price needed to cover the entered costs. A positive target adds the desired contribution. The model does not automatically include every platform charge, discount or tax treatment.
Check dimensional weight before shipping
The dimensional weight calculator multiplies package length, width and height, divides by the selected carrier divisor, and compares the result with actual weight. Use the packed parcel, not the item alone. Carrier rounding and service-specific rules can alter the billable weight, so confirm the divisor and conditions before buying a label.
ILLUSTRATIVE NUMBERS / ADJUST TO YOUR SITUATION
Worked example: why price and profit are different
An item sells for $45, costs $15, and uses $8 for postage and packaging. With a 10% fee applied to the item sale price, the fee is $4.50. The modeled profit is $45 − $15 − $8 − $4.50 = $17.50. Dividing that profit by $45 gives approximately 38.89% for the margin after those entered costs.
If a separate processing charge or fee on shipping applies, this result needs an additional cost adjustment. Keep the item selling price and the buyer’s total payment distinct, and describe the fee base in your records so the next order uses the same definition.
Use the same cost basis across products
Choose whether the comparison includes materials only or the broader order cost, then apply that choice consistently. A product with an impressive gross margin may still contribute little after postage, returns and advertising. Compare realistic sale prices after discounts, and rerun the price model when a supplier cost, package size or platform fee changes.
For a fuller explanation, read the Price an Online Order for Profit, Not Just Revenue. You can also review our editorial policy or report a calculation issue with the page and input values.
Seller pricing questions
Is a 20% markup the same as a 20% margin?
No. For example, a $30 cost with a 20% markup gives a $36 price and a $6 difference. That $6 is 16.67% of the $36 selling price, so the margin is about 16.67%. The two percentages use different denominators.
What does a negative profit result mean?
Under the values entered, the order’s modeled costs exceed its sale price. Check for a duplicate cost or incorrect fee first. If the inputs are right, the model indicates a loss before any costs that have not been included. A higher revenue total alone does not fix that order-level gap.
Can the pricing tool handle multiple percentage fees?
It uses one variable percentage fee. Fees with different bases or fixed minimums may not be represented by simply adding percentages together. Review the actual fee structure and record fixed charges separately. Use the result as a scenario rather than assuming every platform is modeled identically.
Will the dimensional-weight result equal the carrier invoice?
Not necessarily. Carriers can round dimensions or weight and apply minimums or service-specific rules. The calculator shows the unrounded dimensional comparison from the divisor you enter. Check the current carrier rules for the package and service before treating it as a final billed amount.
Check the four example scenarios
These are the prefilled calculator scenarios, provided so you can reproduce the arithmetic. They are illustrative order scenarios, rather than current marketplace fee schedules, carrier billing rules or recommended selling prices. Select a tool, leave its defaults in place to check the example, then replace the inputs with your own values.
Calculate profit after the entered costs
A $45 sale with a $15 item cost, $8 shipping-and-packaging cost and a 10% fee leaves $17.50 in modeled profit. The fee is $4.50, and the modeled profit margin is 38.89%.
Separate margin from markup
A $50 selling price and $30 cost leave $20. Margin is $20 divided by $50, or 40%; markup is $20 divided by $30, or 66.67%. Keep the denominator clear.
Find a price for a profit target
With $25 in costs, a $10 target profit and a 10% percentage fee, the price is $35 divided by 0.90, or about $38.89. At that price the fee consumes about $3.89.
Check dimensional weight before shipping
A 12-by-10-by-8-inch package is 960 cubic inches. Dividing by 139 gives 6.91 pounds, above its five-pound actual weight. The carrier may then apply whole-pound or other billing rules.
FROM AN ESTIMATE TO A DECISION
Identify the fee base before trusting profit
A marketplace can charge a percentage on more than the item price, combine several fees, or include fixed processing charges. This calculator applies the entered percentage to item sale price only. To compare it with a statement, identify the actual fee base and put other known costs into a documented worksheet. A fee percentage copied without its base may create a convincing but incorrect profit figure. Refunds and discounts should also match the sale amount being modeled.
Use margin to compare orders on a consistent basis
One order may include shipping in the selling price while another collects it separately. Define whether you are comparing product margin or the complete order result before choosing costs. A target profit price is only as complete as its fixed-cost total and percentage-fee assumption. Recheck the result after changing package size, because dimensional billing can alter shipping cost. Keep business overhead and taxes in separate records if they are outside the unit calculation.
Keep a reproducible scenario
A useful calculation record has five parts: the question you want to answer, the source of each input, the units and period, the output, and the assumptions left outside the model. Preserve the original scenario before experimenting with an alternative. That makes it easier to explain why a second answer differs and to update the record when a measurement or quote changes.
Use the same model for both scenarios. If you switch methods, explain the difference before comparing totals. Check the mathematical result separately from the practical decision: correct arithmetic can still depend on an incomplete cost category or unsuitable source value. Keep a label, dated quote, policy or dataset reference with your notes where it matters.
Continue with a practical guide
Read Build an Order-Cost Worksheet Before Setting Your Price for a step-by-step workflow, checks and an example. The guide library brings both reference articles together. Start with the measurement or input method, then use the relevant calculator and return to the guide to check what the result means.