Profit Margin Calculator

How to use this calculator

1. Enter your numbers in each field above — the calculator updates instantly as you type, so there's nothing to submit.
2. Use your real figures when you have them, or sensible estimates while you're planning. If a field doesn't apply, leave it at zero.
3. Compare the results, then change one input at a time to see how each lever (price, cost, fees, volume) moves the outcome.

When to use this calculator

• Before launching a new product, to see whether the planned price clears your minimum margin.
• When sourcing inventory, to confirm landed cost still leaves room for fees, shipping, and profit.
• After a fee change on any selling platform, to recheck whether existing prices still work.
• When deciding whether to discount — a 20% coupon on a 40% margin product cuts margin to 25%, on a 25% margin product to 6%.
• When comparing the same product across Etsy, Amazon, Shopify, and eBay.

Formula

Net profit = Selling price − Total cost · Profit margin (%) = (Net profit ÷ Selling price) × 100 · Markup (%) = (Net profit ÷ Total cost) × 100

Worked example

You sell an item for $40. Your costs are $15 product, $4 fees, $5 shipping = $24 total cost.

1. Net profit = 40 − 24 = $16
2. Profit margin = 16 ÷ 40 × 100 = 40%
3. Markup = 16 ÷ 24 × 100 ≈ 66.7%

Answer: $16 profit · 40% margin · 66.7% markup

More worked examples

How it works

Expert tips

• Always express your minimum acceptable margin BEFORE you start pricing — it's much harder to talk yourself out of a bad price later.
• Use margin (not markup) when comparing across products or channels — margin is the apples-to-apples number.
• Watch for 'fee drag' as price rises: percentage-based fees mean profit margin doesn't grow linearly with price.
• For handmade and service work, bake labor into product cost at a real hourly rate or the margin number is fiction.
• If a product margin is below 20% after all costs, you usually need volume that most small shops can't sustainably reach — re-price or replace.

How to interpret your results

• Dollar values are shown per sale, per order, or per item unless a result is explicitly labelled monthly, weekly, or daily.
• Percentages (margin, ROI, conversion rate) are easier to compare across products and price points than raw dollars — use them when you benchmark.
• A positive result means you're ahead after the costs and fees you entered. A negative result means the current numbers don't work — change a lever (raise price, cut a cost, lower ad spend) and recalculate.
• Treat the output as a planning estimate, not a guarantee. Fees, taxes, and conversion rates shift over time — re-run the numbers whenever a key input changes.

Limitations

• Per-unit only — doesn't model fixed monthly costs (subscriptions, rent, salaries). Use the Break-Even Calculator for that.
• Doesn't allocate overhead across units — for a fully loaded margin, add an 'other' line that approximates per-unit overhead.
• Doesn't account for returns and refunds; a 5–10% return rate effectively shaves that much off margin.
• Doesn't separate gross vs net margin in accounting terms; this is contribution margin per sale.
• Currency conversion, sales tax, and income tax are not included — the result is pre-tax profit on the sale itself.

Common mistakes

• Confusing margin with markup (they're never the same number).
• Calculating margin against cost instead of selling price.
• Forgetting platform and payment fees — these quietly cut margin on every sale.
• For handmade sellers: not paying yourself for your time, which makes margins look healthier than they are.

Related Guides

Go deeper with plain-English guides on the same topic.

• What Is a Good Profit Margin?

  What counts as a healthy profit margin — and how it changes depending on what you sell and where.

  Read guide →

• What Is A Good Profit Margin? Complete Small Business Profit Margin Guide

  A 2026 profit margin guide — gross vs net vs contribution, what counts as a good margin, healthy benchmarks by industry and platform, formulas, and improvement strategies.

  Read guide →

• Pricing Psychology Explained: 25 Strategies That Increase Sales

  A 2026 pricing psychology guide — what it is, why it works, 25 specific techniques with examples, platform-specific applications, before/after scenarios, and ethics.

  Read guide →

• How to Price Handmade Products

  A simple formula for pricing handmade work that covers materials, labor, overhead, and profit.

  Read guide →

FAQ

What's the difference between profit margin and markup?

Margin is profit as a percentage of your selling price; markup is profit as a percentage of your cost. Markup is always the higher number.

Is margin calculated on price or cost?

On your selling price. A $16 profit on a $40 sale is a 40% margin.

What costs should I include?

Everything tied to the sale: product/material cost, platform and payment fees, shipping, ads, and packaging.

What's a good profit margin?

It depends on your product type and channel — digital products run very high, physical and POD products much lower. See our guide "What Is a Good Profit Margin?" at /guides/what-is-a-good-profit-margin.

Does this work for digital products or services?

Yes. Enter your price and whatever costs apply; for a digital download your costs may just be platform fees.

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