All Calculators
Explore free online calculators with instant results, documented formulas, FAQs, examples, and step-by-step explanations.
125 calculators available
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Lean Body Mass Calculator
Calculate your Lean Body Mass (LBM) using your height, weight, and gender. Estimate the weight of your muscles, bones, organs, and body water excluding body fat.
Waist-to-Hip Ratio Calculator
A free Waist-to-Hip Ratio (WHR) Calculator to help you understand your body fat distribution and associated health risks. Simply enter your waist and hip measurements to instantly calculate your WHR, see how it compares to standard health ranges, and learn whether your body shape may indicate a higher risk of conditions like heart disease or diabetes. Fast, accurate, and easy to use.
Exam Countdown Calculator
Create a saved exam countdown with daily study goals, preparation milestones, an exam calendar, study streaks, progress tracking, and private bookmarks.
Sukanya Samriddhi Yojana Calculator
Calculate the maturity corpus, total investment, and compounding interest earnings for the Sukanya Samriddhi Yojana (SSY) small savings scheme for a girl child under Ministry of Finance statutory rules.
NPS Calculator
Calculate your National Pension System (NPS) maturity corpus at age 60, the 60% tax-free lump-sum withdrawal, 40% mandatory annuity allocation, and estimated lifelong monthly pension.
Gratuity Calculator
Calculate gratuity amount based on your last drawn salary and years of service. Estimate gratuity benefits instantly using the official gratuity formula.
Love Calculator
Enter two names to generate a repeatable love percentage from the exact spelling entered. The result is a private entertainment game, not relationship advice.
Friendship Calculator
Compare two names with a repeatable friendship score based on normalized character values. Use the result as a light-hearted BFF game, not a judgement of a friendship.
Crush Calculator
Check your crush compatibility percentage instantly with our free Crush Calculator — just enter two names to discover your crush match score, relationship potential, and compatibility level. Fun, fast, and free to use anytime, anywhere, with no sign-up required!
Lucky Number Calculator
Calculate your lucky number using your date of birth. Discover your numerology number, personality traits, strengths, and life path insights instantly with our free Lucky Number Calculator.
House Construction Cost Calculator
Estimate house construction cost in India from built-up area, city tier, quality, and floors. Review per-square-foot rates plus material and labour shares.
Brick Calculator
Estimate bricks or blocks for a wall from its length, height, and thickness, including joint volume, wastage, unit price, and material cost.
Cement Calculator
Estimate 50 kg cement bags, cement weight, volume, and cost for slabs, foundations, beams, columns, and floors using project dimensions and concrete grade.
Concrete Calculator
Calculate concrete volume, cement bags, sand quantity, aggregate quantity, and material costs for slabs, foundations, columns, beams, and construction projects.
JSON Formatter
Fix, format, beautify, validate, and minify JSON data instantly with one click. Free online JSON Formatter and JSON Beautifier for developers.
Website Carbon Footprint Calculator
Estimate a web page's transfer weight, HTTP requests and CO₂e per visit, check whether its hosting is recognised as green, and project monthly or annual emissions.
Android UI Inspector
Connect an Android phone through USB, capture its current screen and UI hierarchy, and copy Appium, UIAutomator2, XPath, or ADB tap selectors.
UUID Generator
Generate UUID v4 identifiers instantly. Create single or multiple unique UUIDs for development, databases, APIs, testing, and distributed architecture.