Legal & Business
Professional business calculators created by experienced analysts for financial planning, legal computations, and business decisions. Our tools follow industry standards and regulations, trusted by entrepreneurs, consultants, and business professionals worldwide.
Legal & Business
Argentina CUIT Generator & Validator | Test Tax IDs
Generate and validate Argentina CUIT numbers for testing. Create mathematically valid tax IDs with correct check digits or verify existing CUITs instantly.
CBU Generator & Validator for Argentina | BCRA Banking Codes
Generate and validate Argentinian CBU (Clave Bancaria Uniforme) bank codes. Free tool using official BCRA algorithms for developers, testers, and financial applications.
CNPJ Generator & Validator - Brazilian Business ID Tool
Generate valid CNPJ numbers for testing or validate Brazilian business IDs instantly. Free tool with check digit verification for developers working with Cadastro Nacional da Pessoa Jurídica.
CPF Generator - Create Valid Brazilian Tax IDs for Testing
Free CPF generator creates valid Brazilian tax ID numbers that pass validation algorithms. Perfect for testing forms, APIs, and databases without using real personal data.
CUIT/CUIL Generator & Validator | Argentinian Tax ID Tool
Generate valid Argentinian CUIT/CUIL test numbers or validate existing ones. Free online tool for developers testing tax ID and payroll systems with AFIP-compliant validation.
CURP Generator - Test Mexican ID Codes for Development
Generate valid test CURPs for Mexican application development. Free tool creates random 18-character identification codes following official RENAPO format. Perfect for testing, database seeding, and API validation.
Detention Time Calculator - Water Treatment & HRT Tool
Calculate detention time for water treatment basins, wastewater systems, and stormwater facilities. Free hydraulic retention time calculator with instant results and all unit conversions.
Federal Court Limitation Period Calculator | Never Miss a Deadline
Calculate Federal Court limitation periods instantly. Get exact expiry dates for immigration judicial reviews (15 days), judicial reviews (30 days), and appeals. Free deadline tracker.
IBAN Generator & Validator Tool - Test Banking Data
Generate valid test IBANs or validate existing ones instantly. Supports 10 European countries with MOD 97 validation. Perfect for financial software testing and development.
Mexican CLABE Generator & Validator | Free Testing Tool
Generate valid Mexican CLABE numbers for testing payment systems. Create multiple CLABEs with correct bank codes and check digits. Verify existing CLABEs instantly for free.
Mexican RFC Generator for Testing | Free Online Tool
Generate valid Mexican RFC codes for software testing. Create up to 100 RFCs for individuals or companies with proper SAT format and verification digits.
Tax Residency Calculator - Track Days for Residency Status
Free tax residency calculator to determine your residency status by tracking days spent in different countries. Essential tool for expats, digital nomads, and frequent travelers.