Professional e-commerce calculators, built for operators.
Free instant tools for VAT, profit margins and stock valuation. No signup, no ads, no data leaves your browser.
18
Countries supported
277+
Pre-computed pages
2026
Rates up-to-date
0
Signups required
Our tools
Three calculators. One workflow.
Start with any tool — each one works standalone and remembers nothing about you.
VAT Calculator
Pre-tax ↔ total price in 1 click
Calculate VAT for 18 countries and every product category with official 2026 rates. Download results as a free PDF.
- ✓18 countries · 12 categories
- ✓Official 2026 rates
- ✓PDF export
Profit Margin Calculator
Gross, net, markup & break-even
Enter purchase price, selling price, shipping and VAT — get gross margin %, net margin %, markup % and break-even quantity. 18 currencies.
- ✓Gross & net margin %
- ✓Markup %
- ✓Break-even quantity
Stock Valuation Calculator
Inventory value & low-stock alerts
Enter products, quantities and purchase prices — get total stock value, value by category and low-stock flags. CSV import/export, your data stays on your device.
- ✓Total stock value
- ✓Value by category
- ✓CSV import / export
Why these tools
The anti-spreadsheet toolkit
Replace messy Excel files and generic online calculators with something purpose-built for online sellers.
Instant results
Calculations happen in your browser — no spinners, no loading, no data sent to servers.
Privacy-first
Your inputs stay on your device. We never collect product lists, prices or invoices.
Localized
Every calculator ships in 18 currencies with the right VAT/TVA/IVA names and rates.
Built by operators
Designed by the MoulMall team from real e-commerce workflows — not generic SaaS fluff.
Coverage
18 countries, one toolkit
Localized currency, VAT/TVA/IVA names and official rates.
Ready to stop calculating?
Let MoulMall handle it for you.
Automated VAT on every invoice, live inventory valuation, margin tracking across your catalog. Free 29-day trial, no card required.