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auto

Fuel Consumption Calculator

Free privacy-first fuel consumption and trip cost calculator. Calculate your fuel economy in metric and imperial units for you.

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Power & Torque Converter: HP to kW, Nm to lb-ft

Instant automotive unit converter. Switch between Horsepower (hp), Kilowatts (kW), Metric HP (ps), and Torque units (Nm, lb-ft). Privacy-first, browser-only calculations.

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Car Total Cost of Ownership Calculator

Calculate the true cost of owning your vehicle. Includes fuel, insurance, maintenance, and hidden fees. 100% private and browser-based.

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Luxury SUV Ownership Cost in your country: The Uncensored Financial Reality

Calculate the exact TCO of a luxury SUV in $. Uncover hidden expenses from premium fuel octanes to proprietary air suspension repairs and dealership tricks.

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Sedan Ownership Cost in your country: The Financial Champion

Calculate the long-term TCO of a sedan. Analyze aerodynamic fuel efficiency on major highways, accurate insurance rates in major cities, and long-term reliability secrets.

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Electric Car (EV) Ownership Cost in your country: The Future of TCO

Analyze the true TCO of an EV in $. Compare the higher upfront MSRP against massive long-term savings in kWh charging, battery degradation, and zero oil changes.

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Used Car Ownership Cost in your country: The Financial Hack

Calculate the true mathematical cost of a used car. Perfectly balance massive depreciation savings with increased preventative repair budgets and PPI strategies in $.

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health

BMR & TDEE Calculator

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) instantly. 100% private, client-side calculator based on the Mifflin-St Jeor equation.

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pc

Power Supply Calculator

Calculate the perfect power supply (PSU) wattage for your custom PC build. Accurate estimations with overclocking support, transient spike buffers, and 100% local processing.

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img

Free Online Image Editor

Professional grade online image editor. Edit photos, apply filters, and use layers directly in your browser. 100% privacy, no server uploads.

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Polaroid Photo Generator

Easily turn any digital photo into a vintage Polaroid picture. Add custom handwriting captions, adjust zoom, and download for free with zero watermarks and absolute privacy.

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programming

Image to Code Converter

Professional tool to convert images to Base64, calculate SHA-256 integrity, generate BlurHash placeholders or pHash fingerprints. 100% private, client-side Wasm processing.

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safety

Secure Password Generator

Generate high-entropy, cryptographically secure passwords. 100% browser-based CSPRNG generation following NIST standards. No logs, no server storage.

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math

Compound Interest Calculator

Calculate your investment growth over time with our privacy-first compound interest calculator. Account for inflation, capital gains taxes, and regular contributions.

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Cookie Policy

Transparency and user privacy are the core pillars of Zernar. This comprehensive Cookie Policy is designed to clearly explain what cookies are, precisely how our platform and third-party partners utilize them, and the actionable steps you can take to manage your digital footprint in compliance with global privacy laws (including GDPR and CCPA).

1. Understanding Cookies and Web Storage

Cookies are small text files placed on your computer, smartphone, or tablet by websites you visit. They are an industry-standard technology used globally to ensure websites function properly, remember your preferences, and provide analytical insights. In addition to traditional cookies, modern browsers utilize 'Local Storage'—a similar technology that allows websites to save data directly on your device. While traditional cookies are often sent back and forth between your browser and web servers, Local Storage data generally remains strictly on your device.

2. How Zernar Operates (Zero-Info Serverless Architecture)

Zernar is uniquely engineered to maximize your privacy by utilizing a strict 'zero-info serverless' architecture. Our core utility tools (such as calculators and converters) operate using a 100% client-side framework. This means all mathematical operations execute entirely within your browser's memory without requiring persistent first-party tracking cookies to function. Because we are serverless, we literally cannot collect, store, or transmit your personal inputs, monitor your keystrokes, or build an internal profile of your behavior. Any data you enter into our tools is isolated locally and permanently disappears the moment you refresh or close the tab.

3. Third-Party Cookies: Google AdSense & Analytics

To maintain Zernar as a completely free global resource, we partner with specialized third-party services that do employ cookies. Specifically, we use Google AdSense to serve advertisements. Google and its ad technology partners utilize persistent cookies to display personalized ads based on your prior visits to Zernar or other sites across the internet. These third-party AdSense cookies allow advertising networks to recognize your device and tailor content to your interests. We also utilize Google Analytics to gather anonymized, aggregated telemetry (such as general page views) to help us optimize the platform. These third parties absolutely do not gain access to the private data or calculations you process locally in our tools.

6. Your Rights: Managing and Disabling Cookies

You have total authority over how cookies operate on your device. Most modern web browsers allow you to block, delete, or selectively accept cookies via their native privacy settings. If you prefer not to receive personalized advertisements globally, you can easily opt out by visiting Google's 'My Ad Center' (myadcenter.google.com), the Network Advertising Initiative (NAI), or the Digital Advertising Alliance (DAA) opt-out portals. Please note that while disabling third-party cookies will successfully stop personalized tracking, you will still see non-personalized, contextual advertisements on Zernar.