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Body Mass Index (BMI) is the most widely used screening tool for assessing whether a person is underweight, normal weight, overweight, or obese. While BMI has limitations, it remains the standard starting point for health assessment used by doctors worldwide. Our free BMI Calculator computes your BMI instantly, shows your health category, and gives you … Read more
Hash functions are fundamental to modern computing — from verifying file integrity and storing passwords to blockchain and digital signatures. Our free Hash Generator computes MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly in your browser. It also includes a hash verifier so you can confirm that a file or message has not been tampered … Read more
CSS gradients are one of the most visually impactful tools in web design — but writing gradient syntax by hand is slow and unintuitive. Our free CSS Gradient Generator lets you build beautiful linear, radial, and conic gradients with a visual editor, live preview, and instant CSS code copy. No more guessing hex codes or … Read more
Albert Einstein reportedly called compound interest the eighth wonder of the world. Whether that quote is accurate or not, the mathematics is real and powerful. Small, consistent investments compounded over long periods grow into dramatically larger sums than most people expect. Our free Compound Interest Calculator shows exactly how much your money will grow — … Read more
From converting kilometres to miles for a road trip, kilograms to pounds at the gym, or Celsius to Fahrenheit for a recipe — unit conversions are needed constantly in daily life. Our free Unit Converter handles 7 categories and 60+ units instantly in your browser, with no app download or login required. Categories Supported Length … Read more
If you work with APIs, databases, log files, or backend code, you encounter Unix timestamps constantly — numbers like 1715000000 that represent a specific moment in time. Decoding them by hand is impossible. Our free Unix Timestamp Converter converts epoch timestamps to human-readable dates and dates back to timestamps instantly, with timezone support and multiple … Read more
Public Provident Fund (PPF) remains one of India most popular long-term savings instruments — and for good reason. It offers guaranteed returns, complete tax exemption on contribution, interest, and maturity (EEE status), and sovereign backing from the Government of India. Our free PPF Calculator shows your exact maturity amount and year-by-year balance with the current … Read more
Writing a cheque in India requires one skill that most people find surprisingly tricky — converting numbers into Indian-format words. One crore seventy-five lakh forty-two thousand five hundred rupees only. If you have ever stared at a blank cheque trying to figure out how to write 1,75,42,500 in words, our free Number to Words Converter … Read more
Whether you are a developer comparing two versions of code, a writer reviewing edits to an article, a lawyer checking contract revisions, or a student comparing essay drafts — knowing exactly what changed between two texts is essential. Our free Text Diff Checker highlights every addition and deletion instantly, in both split view and unified … Read more
Every working Indian faces the same question at the start of every financial year: which tax regime saves more money — the New Regime or the Old Regime? The government changed the rules again for FY 2025-26, and the new slabs make the New Regime more attractive than ever for most salaried employees. Our free … Read more
The Public Provident Fund (PPF) is India most trusted long-term tax-saving investment. With guaranteed returns, complete tax exemption under the EEE (Exempt-Exempt-Exempt) model, and government backing, it remains the first choice for conservative investors. Our free PPF Calculator shows your exact maturity amount with a year-by-year balance breakdown in seconds. Current PPF Interest Rate 2025-26 … Read more
Writing a cheque, drafting a legal document, or filling an invoice in India requires converting numbers into words — and doing it correctly in the Indian numbering system (lakh and crore) rather than the Western system (million and billion). Our free Number to Words Converter handles this instantly for any amount up to 999 crore, … Read more
Whether you are reviewing code changes, comparing contract versions, checking edited documents, or validating data transformations — knowing exactly what changed between two pieces of text is essential. Our free Text Diff Checker highlights every addition, deletion, and unchanged line in seconds with a clean side-by-side or unified view. What Is a Text Diff Tool? … Read more
Calculating your income tax in India has never been more confusing — or more important. With two tax regimes now in play, millions of salaried employees are unsure which regime saves them more money. Our free Income Tax Calculator India solves this instantly: enter your salary details and see a complete New Regime vs Old … Read more
Using weak or reused passwords is the single biggest cause of account breaches in 2026. Yet most people still use passwords like “john1990” because creating a strong unique password for every account is tedious. Our free password generator solves this instantly — generate a cryptographically strong password in one click, customise the length and character … Read more
If you’ve ever stared at a JWT token like eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIx… and had no idea what’s inside it, you’re not alone. JWT tokens are base64url-encoded by design — which makes them compact but completely unreadable by humans. Our free JWT Decoder solves this instantly: paste any token and see its full contents in a clean, structured … Read more
QR codes are everywhere — restaurant menus, business cards, payment portals, event tickets, and product packaging. Creating one used to require expensive software or a paid subscription. Not anymore. Our free QR code generator lets you create any QR code instantly, for free, with no sign-up required. What Is a QR Code? A QR code … Read more
Free online color picker. Convert HEX to RGB, RGB to HSL, pick colors visually, generate shade palettes and get CSS code instantly.
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Step-by-step guide to using ChatGPT for free in 2025 — sign up, start chatting, and get the most from the free plan.