Free Online Tools
100+ free tools for finance, health, development, SEO, and everyday tasks — all running in your browser with no sign-up and no subscription required. From EMI calculators and unit converters to DNS lookups, JSON formatters, and meta tag generators — find what you need and get your answer in seconds.
Calculators
Plan your finances with tools built for real decisions — EMI, compound interest, SIP, FD, RD, loan planning, retirement, inflation, tax, and more. Ideal for individuals, students, and professionals managing personal or business finances. Free, instant, and no sign-up required.
Converters
Instantly convert between any units of measurement — metric to imperial, Celsius to Fahrenheit, gigabytes to terabytes, and 15+ other categories. Perfect for students, engineers, travelers, and everyday users who need quick, accurate results. Covers length, weight, temperature, area, volume, speed, pressure, energy, data storage, cooking, time zones, and currency.
Text Tools
Transform, analyze, and clean text without leaving your browser — count words, convert letter case, remove duplicate lines, sort text, generate lorem ipsum, and more. Built for writers, developers, and content creators who work with text every day. Paste your content and get results instantly, with no uploads or accounts.
Health Tools
Calculate BMI, BMR, ideal body weight, daily calorie intake, water needs, sleep cycles, body fat percentage, and more. Designed for anyone focused on wellness, fitness, or health awareness — a practical starting point before consulting a professional. Covers 14 health and fitness calculators built for all body types and goals.
Internet Tools
Diagnose domains, servers, and email infrastructure with tools built for sysadmins, developers, and IT professionals. Run DNS lookups, WHOIS queries, port scans, SSL checks, SPF/DKIM/DMARC validation, blacklist checks, and more — all from your browser. No installation, no accounts — just results.
Developer Tools
Encode, decode, format, and generate data with utilities that save time during development and debugging. Includes JSON formatter, Base64 encoder/decoder, URL encoder, JWT decoder, regex tester, hash generator, UUID generator, bcrypt tool, and more. Built for software developers, DevOps engineers, and anyone working with data formats daily.
SEO Tools
Audit and optimize your website's search visibility with tools used by SEO professionals and content marketers. Preview SERP snippets, generate meta and Open Graph tags, validate schema markup, check keyword density, build UTM links, and extract headings. Covers on-page SEO, technical SEO, and content analysis — all free.
From the Blog
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Cooking Converter — Cups, Tablespoons, ml & Grams Explained
Learn how to convert between cups, tablespoons, fluid ounces, millilitres, grams, and more — with real cooking examples and tips for following recipes from any country accurately.
MX Lookup — Check Any Domain's Mail Server Records Instantly
Learn how MX records work, what mail server priorities mean, how to read common configurations for Google Workspace and Microsoft 365, and how to use a free MX lookup tool to diagnose email routing.
Sitemap Indexation: Why Google Doesn't Index All Your Submitted URLs
A low sitemap indexation ratio is Google giving you feedback. Here's what the common exclusion reasons (crawled-not-indexed, duplicate canonicals, 404s) actually mean, how crawl budget works for large sites, and how to improve what gets indexed.
Which Schema Types Actually Produce Rich Results in Google — and Which Don't
Valid schema doesn't guarantee rich results. Here's which schema types actually produce rich results in 2024 (Product, Event, JobPosting, BreadcrumbList), the 2023 FAQ and HowTo changes, and common reasons schema fails despite passing validation.
JWT Decoder — Debug Authentication Errors by Inspecting Token Claims
Learn how to use a JWT decoder to debug 401 errors, understand the header, payload, and signature sections, check expiry and audience claims, and identify security issues like alg:none attacks.
Pressure Converter — PSI, Bar, kPa & mmHg for Tyres, Blood & Weather
Learn pressure unit relationships (Pa, kPa, bar, PSI, atm, mmHg), tyre pressure conversion, blood pressure interpretation, weather forecasting, and the difference between absolute and gauge pressure — with a free converter.
Why JSON Gets Double-Encoded — and How to Detect and Fix It
Double-encoded JSON — JSON strings where objects were expected — happens when serialisation runs twice at different layers. Here's how it happens, how to detect it, how to fix it programmatically, and what the common Unicode escape sequences mean.
FD Calculator — Calculate Fixed Deposit Maturity Amount & Interest
Learn how fixed deposit interest is calculated, what affects your maturity amount, and how to use a free FD calculator to compare tenures and rates before you invest.
Random String Generator — Secure Tokens, API Keys & Test Data
Learn when and how to generate random strings for session tokens, API keys, OTPs, and test data — what character sets to use, how long they should be, and what entropy actually means in practice.
MET Values, RPE, and Heart Rate Zones: How Exercise Scientists Measure Intensity
METs let you compare any physical activity in a single number. Here's the full MET scale with specific values, the calorie calculation formula, RPE scales and the talk test, heart rate zones explained, and why fitness level makes the same workout burn fewer calories over time.
