MarginhavenFree
Free in the browser - no sign-up.
Free
- All six calculators
- No account, no ads
For Amazon, Etsy and Shopify sellers and solo operators
Margin, markup and break-even in one tab.
A clean profit calculator with no account and no email wall. Add cost, fees and price - read margin and break-even instantly.
- No sign-up
- No email wall
- Works offline (Pro)
- Final prices, no hidden costs
- Secure payment via Stripe
- Reply within 1–2 working days
- No cookies, no tracking
Pro
Free to use - Pro when you need more
One payment, no subscription. Prices are final (small business, section 19 German VAT Act - no VAT charged).
Pro
Offline file with history and CSV.
$12
one-time
- Offline file with result list
- CSV export
- One payment, no subscription
Pro Plus (all calculators + templates)
Pro plus pricing templates.
$24
one-time
- Everything in Pro
- Pricing worksheets (PDF, DOCX, XLSX)
Team (up to 10 devices)
Pro Plus for the whole team.
$59
one-time
- Everything in Pro Plus
- Up to 10 devices
All prices are final prices. No VAT is charged (small business under § 19 German VAT Act).
Why Marginhaven
Numbers you can act on
Margin and markup
Side by side, so you price with confidence.
Fees in the price
Work out the price after marketplace and payment fees.
Break-even
How many units until you make a profit.
Private
Runs in your browser; nothing is sent.
What you can rely on
- Private by design
Everything runs in your browser. Nothing you enter is sent to us.
- One payment
No subscription, an invoice for every payment.
- Real support
Questions by e-mail, answered in 1-2 working days.
Questions
Is it really free?
Yes. The free version has no account, no ads and no time limit.
Do you see what I enter?
No. The tool runs in your browser; nothing is transmitted.
What do I get with Pro?
See the plans above. Pro is a one-time payment.
Net / Gross
Formula: gross = net x (1 + rate); net = gross / (1 + rate).
Selling price from wanted margin
Formula: price = cost / (1 - margin). Margin is a share of the selling price, not the markup.
Margin & markup
Formula: margin = (price - cost) / price; markup = (price - cost) / cost.
Discount
Formula: deduction = amount x percent; to pay = amount - deduction.
Hourly rate
Formula: (income + costs) / (weeks x hours x billable share). Before tax and pension - orientation only.
Break-even
Formula: fixed costs / (price - variable cost), rounded up.
Pro:
All calculators run only in your browser. Nothing you enter is transmitted. Guidance only, not tax or legal advice.
Questions or Pro order?
We reply by e-mail within 1-2 working days. Offer and invoice follow by e-mail.