37 Free Online Calculators & EU Compliance Tools for Europe

Calculate exact business days and working days between two dates. Automatically excludes weekends and European public holidays.

Add or subtract business days from any start date to determine exact delivery dates and project deadlines.

Calculate the exact time difference between two dates in total days, weeks, months, years, and hours.

Find the official ISO 8601 week number for any date, or find the start and end dates of any calendar week.

Complete guide to official European public holidays for Netherlands, Germany, France, Spain, and Italy.

Calculate total hours and minutes worked between start and end times with break deduction and wage payout.

Calculate European VAT online. Convert between Net and Gross prices using official rates for all 27 EU member states.

Convert prices between gross (VAT inclusive) and net (VAT exclusive) for invoicing and quotations.

Calculate ecommerce net profit, gross margin, markup, and break-even selling price factoring in COGS, shipping, and fees.

Calculate Return on Ad Spend (ROAS), Customer Acquisition Cost (CAC), and Break-Even ROAS.

Calculate payment gateway processing fees and net merchant payouts for Stripe, PayPal, and European gateways.

Convert earnings between hourly wage, monthly salary, and annual income with estimated net take-home pay.

Calculate electrical energy costs for home appliances converting Watts to kWh.

Estimate annual solar electricity generation, self-consumption savings, feed-in tariff income, and payback period.

Compare annual heating costs between electric heat pumps and gas boilers based on SCOP and current tariffs.

Calculate percentages easily with 4 mathematical modes: what is X% of Y, percentage increase/decrease, and reverse percentages.

Solve proportions (A:B = C:D), simplify ratios to simplest form, and divide sums into ratio shares.

Calculate mean average, median, mode, range, and standard deviation for any set of numbers.

Convert easily between metric and imperial units of length, weight, temperature, area, and volume.

Calculate aspect ratios and proportional dimensions for images and videos with live visual preview.

Calculate European marketplace fees, commissions, and net profit margins across Amazon, eBay, Etsy, Bol, and Vinted.

Calculate wholesale prices, B2B markup margins, and suggested retail prices (MSRP) for European commerce.

Calculate final sale prices, exact monetary savings, and stacked coupon discounts in seconds.

Calculate the optimal free shipping minimum order threshold to maximize average order value and margin.

Harmonize retail prices across all 27 EU member countries considering local VAT rates under One-Stop-Shop (OSS).

Determine your billable hourly and daily rate based on desired net income, overhead expenses, and billable utilization.

Calculate complete multi-item invoice subtotals, tiered European VAT breakdowns, and final payable totals.

Preview compliant currency placement, decimal separators, date formatting, and legal tax labels across all 27 EU countries.

Generate high-converting product titles formatted for Amazon, Google Shopping, Bol, and Shopify with real-time length alerts.

Simulate exact desktop and mobile Google search snippet previews with real-time pixel and character limits.

Generate legally compliant AI disclosure notices, badges, and Schema.org metadata under Article 50 of the EU AI Act.

Create watermarking overlays, HTML badges, and machine-readable Schema.org metadata for AI-generated images under EU law.

Generate a comprehensive corporate AI acceptable-use policy governing employee usage of ChatGPT, Copilot, and code assistants.

Audit your digital presence with this 10-point interactive checklist assessing compliance with EU AI Act obligations.

Classify your AI application across the 4 official EU AI Act tiers and determine exact legal obligations and enforcement dates.

Generate audible voiceover disclaimers and on-screen overlays for synthetic media, deepfakes, and avatars under Article 50(4).

Build an executive enterprise AI governance framework covering vendor risk assessment, human oversight, and GDPR safeguards.

Calculate Netherlands VAT (21% standard, 9% reduced). Add or extract BTW instantly with official Belastingdienst rules.

Calculate Germany VAT (19% standard, 7% reduced). Add or extract MwSt / USt instantly with official Finanzamt (BZSt) rules.

Calculate France VAT (20% standard, 10%, 5.5%, 2.1% reduced). Add or extract TVA instantly with official DGFiP rules.

Calculate Spain VAT (21% standard, 10%, 4% reduced). Add or extract IVA instantly with official Agencia Tributaria (AEAT) rules.

Calculate Italy VAT (22% standard, 10%, 5%, 4% reduced). Add or extract IVA instantly with official Agenzia delle Entrate rules.

Calculate Belgium VAT (21% standard, 12%, 6% reduced). Add or extract BTW / TVA instantly with official FOD Financiën / SPF Finances rules.

Calculate Austria VAT (20% standard, 13%, 10% reduced). Add or extract USt instantly with official Finanzamt (BMF) rules.

Calculate Poland VAT (23% standard, 8%, 5% reduced). Add or extract VAT instantly with official Krajowa Administracja Skarbowa (KAS) rules.

Calculate Portugal VAT (23% standard, 13%, 6% reduced). Add or extract IVA instantly with official Autoridade Tributária e Aduaneira rules.

Calculate Sweden VAT (25% standard, 12%, 6% reduced). Add or extract Moms instantly with official Skatteverket rules.

Calculate Denmark VAT (25% standard, None reduced). Add or extract Moms instantly with official Skattestyrelsen rules.

Calculate Finland VAT (25.5% standard, 14%, 10% reduced). Add or extract ALV instantly with official Verohallinto rules.

Calculate Ireland VAT (23% standard, 13.5%, 9%, 4.8% reduced). Add or extract VAT instantly with official Revenue Commissioners rules.

Calculate Greece VAT (24% standard, 13%, 6% reduced). Add or extract ΦΠΑ instantly with official AADE rules.

Calculate Czechia VAT (21% standard, 12% reduced). Add or extract DPH instantly with official Finanční správa ČR rules.

Calculate Romania VAT (19% standard, 9%, 5% reduced). Add or extract TVA instantly with official ANAF rules.

Calculate Hungary VAT (27% standard, 18%, 5% reduced). Add or extract ÁFA instantly with official Nemzeti Adó- és Vámhivatal (NAV) rules.

Calculate Bulgaria VAT (20% standard, 9% reduced). Add or extract ДДС instantly with official National Revenue Agency (NRA) rules.

Calculate Croatia VAT (25% standard, 13%, 5% reduced). Add or extract PDV instantly with official Porezna uprava rules.

Calculate Slovakia VAT (23% standard, 19%, 5% reduced). Add or extract DPH instantly with official Finančná správa SR rules.

Calculate Slovenia VAT (22% standard, 9.5%, 5% reduced). Add or extract DDV instantly with official Finančna uprava RS (FURS) rules.

Calculate Estonia VAT (22% standard, 9% reduced). Add or extract KM instantly with official Maksu- ja Tolliamet rules.

Calculate Latvia VAT (21% standard, 12%, 5% reduced). Add or extract PVN instantly with official Valsts ieņēmumu dienests (VID) rules.

Calculate Lithuania VAT (21% standard, 9%, 5% reduced). Add or extract PVM instantly with official Valstybinė mokesčių inspekcija (VMI) rules.

Calculate Luxembourg VAT (17% standard, 14%, 8%, 3% reduced). Add or extract TVA instantly with official AED (Enregistrement et Domaines) rules.

Calculate Malta VAT (18% standard, 7%, 5% reduced). Add or extract VAT instantly with official Commissioner for Revenue (CFR) rules.

Calculate Cyprus VAT (19% standard, 9%, 5% reduced). Add or extract ΦΠΑ instantly with official Tax Department Cyprus rules.

Calculate exact working days and business days in Netherlands. Excludes weekends and statutory public holidays (11 statutaire feestdagen inclusief Koningsdag).

Calculate exact working days and business days in Germany. Excludes weekends and statutory public holidays (9 bundesweite und bis zu 14 landesspezifische Feiertage).

Calculate exact working days and business days in France. Excludes weekends and statutory public holidays (11 jours fériés légaux).

Calculate exact working days and business days in Spain. Excludes weekends and statutory public holidays (14 días festivos (nacionales, autonómicos y locales)).

Calculate exact working days and business days in Italy. Excludes weekends and statutory public holidays (12 giorni festivi nazionali).

Calculate exact working days and business days in Belgium. Excludes weekends and statutory public holidays (10 wettelijke feestdagen).