About SarvKit

Free financial calculators, health tools, developer utilities, unit converters, PDF tools, resume & career tools, text & writing tools, and SEO tools — built for everyone.

What's in the name?

The name SarvKit comes from the Sanskrit word सर्व (sarva), meaning “all,” “every,” or “whole.” The same root powers words like sarvajña (all-knowing), sarvaśakti (all-powerful), and sarvodaya (upliftment of all). Combine it with “Kit” and you get exactly what this project is: an all-in-one kit of free online tools — every calculator, converter, generator, and utility you need, in one place, on one site.

Our Mission

SarvKit was built with a simple goal: provide free, high-quality tools that anyone can use without sign-ups, paywalls, or hidden fees. Whether you're planning your finances, tracking your health, debugging code, converting data formats, converting between measurement units, working with PDFs, building your resume, polishing your writing, or optimizing for search engines, our 400+ tools and guides are designed to be fast, private, and easy to use.

We believe essential tools should be accessible to everyone, regardless of their technical background or financial situation. That's why all calculations and conversions happen entirely in your browser — no data ever leaves your device, and no account is ever required.

What We Offer

Our platform is organized into thirteen specialized tool suites, each designed to solve real-world problems:

Why We Built This

When searching for financial calculators or developer tools online, we noticed most sites were cluttered with pop-ups, required sign-ups, collected personal data, or hid features behind paywalls. Many calculator sites provided only a basic widget with no explanation of the underlying concepts, leaving users without the context they need to make informed decisions.

We set out to build something different — tools that are not only functional but genuinely educational. Every calculator page includes detailed explanations of the formulas used, real-world examples with specific numbers, comparison tables, common mistakes to avoid, and frequently asked questions. Our developer tools explain the technology behind each operation, and our unit converters include historical context about measurement systems.

The result is a platform with over 205 tools and 240+ in-depth guides and articles, all accessible for free with no restrictions.

Our Values

Who Is This For?

• Beginners who want to understand how saving and investing works
• Students learning about compound interest, finance, coding, or unit conversions
• Investors planning retirement savings, college funds, or emergency funds
• Home buyers calculating mortgage payments and comparing loan options
• Salaried employees checking EPF, HRA, gratuity, and tax regime benefits
• US workers planning 401(k) contributions, Roth IRA savings, student loan repayment, and Social Security benefits
• Developers & IT professionals formatting JSON, decoding JWTs, testing regex, generating hashes, or converting data formats
• Engineers & scientists converting between measurement units, pressure scales, or energy units
• Home cooks converting between cups, tablespoons, grams, and ounces
• Health-conscious individuals tracking calories, macros, body fat, heart rate zones, and water intake
• Job seekers building resumes, writing cover letters, crafting LinkedIn summaries, and tracking applications
• Writers & content creators checking readability, word count, headline strength, and text formatting
• SEO professionals generating meta tags, schema markup, robots.txt, sitemaps, and previewing SERP results
• Anyone looking for free, no-sign-up tools that respect privacy

Educational Content & Guides

Beyond interactive tools, we publish comprehensive guides to help users make informed decisions:

How We Build & Verify Our Tools

Our calculators are built to be transparent and reproducible. We are not financial advisors, doctors, or lawyers — instead, every tool is grounded in published, widely-used formulas and official figures, with the working shown so you can check it yourself.

• Named, standard formulas. Each tool uses a recognised method and names it on the page — for example the Mifflin-St Jeor equation (recommended by the American Dietetic Association) for calorie needs, the US Navy method for body fat, the Karvonen formula for heart-rate zones, and the Human Life Value approach for life-cover. Financial tools use standard compound-interest, amortisation, and reducing-balance maths.
• Official figures, dated. Tax brackets, contribution limits, and government interest rates are taken from primary sources — the IRS, GOV.UK, and India's RBI/finance-ministry notifications — and the applicable year is stated in the tool. Each YMYL tool shows a “Last reviewed” date.
• Estimates, not advice. Results are mathematical estimates from the inputs you provide. They do not account for your full personal circumstances and are not a substitute for professional financial, medical, insurance, or legal advice.
• Verify before you act. Rates and rules change. For decisions that matter, confirm the current figures with the official source and consult a qualified professional.

Disclaimer

SarvKit is an educational resource. Financial calculator results are mathematical estimates based on the inputs you provide and standard formulas — they do not constitute financial, investment, or tax advice. Developer tools are provided as-is for convenience. Unit conversion results are mathematical approximations. Always consult qualified professionals for important decisions.

See our full Terms of Service and Privacy Policy for details.

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