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
Ten tools. 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
Reorder Point Calculator
Know exactly when to reorder
Enter average daily sales, supplier lead time and a safety buffer — get the exact reorder point, safety stock and a suggested reorder quantity. Never run out of stock again.
- ✓Reorder point (ROP)
- ✓Safety stock
- ✓Suggested reorder qty
Safety Stock Calculator
Service-level buffer inventory
Simple and advanced (King formula) modes. Enter demand variability, lead-time variability and target service level — get the exact buffer units to hold.
- ✓Simple & advanced modes
- ✓Service level 90–99.9%
- ✓Z-score & formula shown
Inventory Turnover Calculator
Ratio, days on hand, benchmarks
Enter COGS and average inventory — get turnover ratio, days on hand (DIO) and how you compare to your industry benchmark. Spot slow-movers and free up cash.
- ✓Turnover ratio + DIO
- ✓Industry benchmarks
- ✓Slow-mover detection
SKU Generator
Consistent codes, bulk-generated
Build a pattern with tokens (category, supplier, size, color, sequence) — generate every variant, detect duplicates against your catalog, export CSV.
- ✓Pattern tokens + presets
- ✓Bulk variant generation
- ✓Duplicate check + CSV export
Inventory Template Pack
Spreadsheets with formulas
5 core templates — stock tracking, purchase log, suppliers, low-stock, stock count — plus industry variants (fashion, grocery, electronics, pharmacy). CSV with formulas.
- ✓5 core + 5 industry variants
- ✓Formulas pre-filled
- ✓Free commercial use
Dead Stock Checker
Find SKUs that are not moving
Upload your inventory CSV and pick an age threshold — we flag every non-moving SKU, total the capital tied up and suggest an action per SKU (discount, bundle, discontinue).
- ✓CSV in-browser analysis
- ✓Dead-stock % + capital locked
- ✓Action plan per SKU
Barcode Label Generator
Code 128 · Avery sheets · A4 print
Paste your SKUs, pick an Avery sheet layout, and print directly to A4. Product name + barcode + price per label with crisp SVG output.
- ✓Code 128 symbology
- ✓30 / 14 / 65 per A4 sheet
- ✓Print or download SVG
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.