About enetko
Instant calculations for taxes, loans, and finance alongside clean, printable calendars. All tools run directly in your browser without sending your inputs to our servers.
Our Mission & Core Philosophy
enetko was built to provide reliable web-based calculators and printable planning utilities. Many web tools are cluttered with opaque formulas, out-of-date statutory rates, and aggressive user tracking. We believe essential computational and planning tools must be fast, verifiable, and respectful of user privacy.
Every calculator in our catalog runs on pure mathematical routines compiled and validated in TypeScript strict mode. We never require account registration, never solicit personal banking credentials, and never monetize user input data.
Kostiantyn Shynkaruk
Creator & DeveloperSoftware Developer • Creator of enetko
Engineering Manifesto
Every mathematical formula and calculation engine is compiled under TypeScript strict mode with zero unsafe type escapes.
All calculations happen locally on your device. Zero user inputs, loan amounts, or personal income figures ever leave your browser.
Designed without intrusive tracking, aggressive popups, or unnecessary bloat, ensuring fast loading and a focused user experience.
Deterministic rounding via Math.round((v + Number.EPSILON) * 100) / 100 to eliminate floating-point drift across schedules.
Instantaneous speed
Full optimization of Core Web Vitals through static site generation (SSG) and pure mathematical functions.
Client-Side Processing
Calculations are performed securely in your browser without transmitting any commercial or financial data.
Modular Architecture
Each tool features strict Zod typing, input validation, and automatic Schema.org markup.
Quality Assurance & Mathematical Verification
1. Decoupled Pure Mathematical Engines
Calculations and layouts are completely separated from the UI layer. All core engines are pure deterministic functions without side effects, tested against published statutory tax rates and standard mathematical models.
2. Floating-Point Precision Protection
Financial rounding adheres to banking standards using Math.round((value + Number.EPSILON) * 100) / 100 to prevent JavaScript floating-point errors from accumulating in multi-year amortization schedules.
3. Global Internationalization (54 Locales)
Every calculator interface, formula legend, and FAQ is adapted to 54 locales with deterministic currency formatting and localized tax terminology.
4. Accessible & Native Standards
Semantic HTML designed to adhere to WCAG 2.1 AA guidelines, screen-reader accessible form controls, clean 320px mobile reflow, and zero external binary bloat for PDF printing.