Business & Seller Calculators
Calculators for people who sell things: what a payment processor or marketplace will actually take from a sale, how to price from cost, and how much a commission plan pays. Fee calculators state the exact rate schedule they assume and the date it was last checked.
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PayPal Fee Calculator
See exactly what PayPal takes from a payment and what lands in your account — or work backwards to the amount you should charge.
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Stripe Fee Calculator
Work out Stripe's cut of a card, in-person or ACH payment — including international and conversion surcharges — or the amount to charge to net a target.
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Markup Calculator
Enter a cost plus a markup, a target margin or a selling price — get the other numbers, including the markup-versus-margin difference that trips people up.
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Commission Calculator
Flat or tiered commission, with an optional split and base pay — see what a deal or a month of sales actually pays you.
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Food Cost Calculator
Cost a recipe per portion and see its food cost percentage — or work out a menu price for the food cost you want. Includes the inventory method for a whole period.