Small tools for clearer pricing.
Margin Grove helps you work out what to charge and understand what you keep from a sale. The calculators are free to use, with no sign-up.
Choose a starting point
- Margin & markup starts with your cost and selling price. It shows gross profit, margin as a share of price, and markup as a share of cost.
- Target selling price starts with your cost and the gross margin you want. It finds a price that reaches that target.
- Discount & profit shows how a discount changes your gross profit and how many sales you would need to make the same total gross profit.
- Compare offers compares two orders with their own prices, quantities, costs, and optional working hours.
What to enter as cost
Use what the item costs you, ready to sell. That might be a purchase cost, or the materials and direct labor needed to make it. Use the same basis for your cost and selling price: one item, one service, or one job.
Margin and markup use different starting points
If something costs $55 and sells for $100, the gross profit is $45. The margin is 45% of the selling price. The markup is about 81.8% of the cost. Both describe the same sale.
What these results include
The margin, target-price, and discount tools show gross profit: selling price minus the cost you enter. They do not separately deduct overhead, advertising, payment fees, or income tax, and do not add sales tax. Account for expenses outside your entered cost when deciding your final price.
Compare offers subtracts the cost per sale and other order costs you enter. It calls the result money remaining, since omitted expenses and taxes may still need covering. Keep your own pay out of these cost fields if you want to compare what remains for your time; include paid help. Hours are the total for each order. Blank hours are unknown; zero hours cannot produce an hourly rate.
Rounding and discounts
Money is calculated in cents and displayed with two decimal places. Target selling prices round up when needed to meet your margin. Discounted prices round to the nearest cent, and required sales round up to whole units.
The discount calculator assumes your cost per item stays the same as sales increase. A larger sales target is a mathematical comparison, not a forecast of customer demand. Selling below cost produces a gross loss.
Offer comparisons allow costs to differ between the two options. Total money amounts use exact cents; hourly amounts round to the nearest cent, including losses. The comparison uses your estimated sales and hours and does not predict demand or available capacity.
How we check the numbers
Margin Grove is an independent pricing-tool project developed with AI assistance. We check calculations against worked examples and automated tests covering losses, zero values, separate order costs, and rounding boundaries. The guides explain the assumptions behind the results. The tools do not replace bookkeeping or account for expenses you have not entered.