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Calculate your exact age in years, months, days, hours, and minutes from your date of birth.

Calculate GST inclusive and exclusive amounts for 5%, 12%, 18%, and 28% rates with CGST, SGST, and IGST breakdown.

Find post office details, district, state, and branch type by 6-digit Indian PIN code or search PIN code by post office / city name instantly.

Play low-frequency water ejection tones (165Hz pulsed sweep) to help dislodge trapped moisture from phone and smartwatch speaker grilles.

Extract the original base price and tax breakdown from any gross GST-inclusive amount.

All-in-one percentage tool: calculate what is X% of Y, percentage share, and percentage increase or decrease.

Play acoustic frequency sweeps and vibration presets to check speaker clarity and loosen superficial dust particles around speaker meshes.

Calculate original price, percentage savings, extra coupon discounts, and the final checkout amount.

Add GST tax to any pre-tax base value and compute the gross invoice total with CGST and SGST splits.

Diagnostic audio sound test for smartphones, tablets, laptops, and speakers. Test clarity, bass, treble, volume levels, and distortion.

Generate precise sine, square, triangle, and sawtooth audio frequencies from 20 Hz to 20,000 Hz in real time.

Compute gross profit, profit margin percentage, and markup percentage from your cost and selling price.

Remove GST from any inclusive total to discover the exact original pre-tax value and tax portion.

Calculate Central Goods and Services Tax (CGST) for intra-state commercial transactions.

Generate and download genuine, customized MP3 test files locally in your browser. Choose frequencies, sweeps, waveforms, stereo channels, or water-ejection tones.

Calculate simple interest, total repayment value, and annual earnings from principal, rate, and time.

Calculate exponential wealth growth and compound interest with flexible compounding intervals.

Calculate State Goods and Services Tax (SGST / UTGST) for intra-state transactions in India.

Test left and right stereo audio separation for phone speakers, desktop monitors, and sound systems with live visual channel meters.

Calculate mean (average), median, mode, range, minimum, maximum, and sum from any set of numbers.

Comprehensive headphone test tool. Check left/right channel separation, bass response, high frequencies, and wiring polarity.

Calculate Integrated Goods and Services Tax (IGST) for interstate trade and imports into India.

Compute the exact tax portion and gross total from any custom or standard GST percentage.

Test your smartphone's front earpiece call speaker and follow safe troubleshooting steps to fix low in-call volume or muffled voices.

Simplify ratios, solve equivalent proportions (A:B = C:D), and divide quantities in specific ratios.

Find the exact number of days, weeks, months, and years between any two calendar dates.

Calculate GST on post-discount prices accurately as mandated by Indian GST valuation rules.

Test your mobile device's internal physical vibration motor and haptic feedback engine with pulse, heartbeat, and SOS patterns using the Web Vibration API.

Compute product discounts, post-discount taxable values, and final payable amounts with GST in one step.

Safe, expert step-by-step troubleshooting guide for muffled, quiet, crackling, or water-damaged phone speakers on iPhone and Android.

Calculate the number of business working days between two dates, excluding Saturdays and Sundays.

Test multichannel surround sound audio channels (FL, C, FR, RL, RR, LFE) to verify home theater and surround headphone configurations.

Add or subtract any number of days, weeks, or months to a starting date to find the target date.

Split any GST amount into equal Central (CGST) and State (SGST) components with underlying base valuation.

Create and calculate multi-item commercial GST invoices with line-item discounts, tax slabs, and print ready totals.

Convert Unix epoch timestamps (seconds and milliseconds) to human-readable dates and vice versa.

Quickly verify retail and commercial bill totals with taxable base, CGST, SGST, or IGST.

Convert date and time between major world time zones including UTC, IST, EST, PST, GMT, and JST.

Compare and calculate indirect tax liabilities across India's four core statutory GST rate slabs.

Check if any year is a leap year, understand the mathematical rules, and view upcoming leap years.

Calculate gross profit, profit margin percentage, GST collected, and final customer selling price.

Compress JPG, PNG, and WebP images directly in your browser without uploading files to any server.

Resize photo dimensions by exact pixels, millimeters, or scale percentage with aspect ratio locking.

Compare New vs Old Tax Regime slabs with standard deduction, Section 87A rebate, and optimal tax savings.

Crop pictures with custom aspect ratios (1:1 Square, 16:9 Landscape, 4:3, Freeform) and instant download.

Calculate monthly in-hand take-home salary, annual income tax, and monthly employer TDS from your CTC.

Convert standard JPG/JPEG images into modern high-efficiency WebP format for faster websites.

Calculate statutory Tax Deducted at Source (TDS) across Indian Income Tax sections (194C, 194J, 194I, etc.).

Compute custom TDS deductions and net payments for any specified percentage rate.

Convert modern WebP images back into universally compatible standard JPG format.

Calculate House Rent Allowance (HRA) tax exemption under Section 10(13A) of the Income Tax Act.

Check exact pixel dimensions, megapixel count, file size, aspect ratio, and print size at 300 DPI.

Scale and format your photo to standard official passport dimensions (2x2 inches / 600x600 px or 3.5x4.5 cm).

Calculate monthly and annual Professional Tax (PT) deductions based on official state government tax slabs.

Calculate statutory gratuity payout under the Payment of Gratuity Act 1972 using the standard 15/26 formula.

Instantly count the total number of pages and inspect file size in any PDF document without uploading.

Combine multiple PDF files into one clean document directly in your browser with complete privacy.

Calculate monthly employee (12%) and employer (EPF 3.67% + EPS 8.33%) Provident Fund contributions.

Project your multi-decade EPF retirement corpus with annual salary increments and compounding EPFO interest.

Extract specific pages or page ranges (e.g. 1-3, 5, 8-10) from any PDF file into a new document.

Calculate Employee State Insurance (ESIC) employee (0.75%) and employer (3.25%) monthly contributions.

Rotate sideways or upside-down PDF pages permanently (90°, 180°, or 270° clockwise) and download.

Convert multiple JPG, PNG, or WebP images into a single professional PDF document.

Count words, characters (with and without spaces), sentences, paragraphs, and estimated reading time in real-time.

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case.

Remove duplicate lines from lists, data files, and logs with case-sensitive and trimming options.

Clean messy text by stripping multiple spaces, leading/trailing whitespace, and redundant empty lines.

Find and replace words, phrases, or regex patterns across text with case sensitivity controls.

Reverse entire text strings, reverse word order, or flip lines upside down for fun and puzzles.

Repeat any string, word, message, or emoji N times with custom separators like spaces or newlines.

Convert between Meters, Kilometers, Centimeters, Millimeters, Miles, Yards, Feet, and Inches.

Convert between Kilograms, Grams, Milligrams, Pounds (lbs), Ounces (oz), and Metric Tons.

Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with instant reciprocal formulas.

Convert between Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), and Petabytes.

Convert digital screen pixels (px) to physical centimeters (cm), millimeters, and inches at any DPI / PPI.

Convert between km/h, mph, meters per second (m/s), knots, and feet per second (ft/s).

Calculate Equated Monthly Installments (EMI), total interest payable, and overall loan repayment schedule.

Calculate expected wealth accumulation and returns from monthly mutual fund Systematic Investment Plans (SIP).

Compare two loan offers side-by-side to find the lowest EMI, cheapest total interest, and best tenure.

Estimate total fuel cost, fuel volume needed, and cost per passenger for any road trip.

Calculate tip amount, total bill with tip, and split the final check evenly among friends.

Convert digits and numbers into words following the Indian numbering system (Lakhs & Crores) and Rupees.

Calculate estimated monthly take-home in-hand salary from annual CTC with PF, Gratuity, and standard deductions.

Convert CBSE and university 10-point CGPA into exact equivalent percentage using the 9.5 multiplier.

Calculate exact vehicle mileage (km per liter) from tank fill-up and odometer readings.

Validate the structural format of any 11-character Indian Financial System Code (IFSC) for NEFT/RTGS/IMPS transfers.

Calculate your current attendance percentage, classes needed to reach 75%, or safe bunkable classes.

Calculate total percentage, overall GPA, and letter grade from marks scored across multiple subjects.

Convert 4.0 scale or 10.0 scale GPA into equivalent percentage and academic standing.

Calculate daily study hours required to finish exam syllabus based on remaining days and chapter difficulty.

Pretty-print, format, validate, and minify JSON data with instant syntax error detection and line numbers.

Encode plain text to Base64 strings or decode Base64 data back to readable UTF-8 text.

Encode URLs and query parameters to percent-encoded format or decode encoded URLs back to human text.

Convert color codes between HEX (#ffffff) and RGB(255, 255, 255) with live color preview box and CSS output.

Generate cryptographically secure random passwords with custom length, symbols, numbers, and memorable phrases.

Generate cryptographic hashes (SHA-256, SHA-512, SHA-1, MD5) for any text string directly in your browser.

Encode special characters into HTML entities (e.g. &, <, >) or decode HTML entities back to plain text.

Generate cryptographically random Version 4 UUIDs (Universally Unique Identifiers) in bulk.

Calculate the percentage growth or increase between an initial value and a new value.

Calculate the percentage drop or reduction between an original value and a lower value.

Compute the relative percentage difference between two values without an inherent starting point.

Fairly divide restaurant checks and tip amounts equally among group members.

Determine the exact day of the week (Monday - Sunday) for any past, present, or future calendar date.

Track the exact days, hours, minutes, and seconds remaining until any target event.

Convert compressed JPEG files into transparent-ready, lossless PNG images locally.

Convert PNG images to lightweight JPG format with customizable quality compression.

Transform article titles and strings into clean, hyphenated URL slugs for SEO.

Format text into standard publishing Title Case, properly capitalizing major words.

Strip all blank, empty, and whitespace-only lines from text documents and code.

Generate complete HTML meta tags, Open Graph, and Twitter Card headers for web pages.

Build valid robots.txt crawler directive files with custom allow/disallow paths and sitemaps.

Convert Red, Green, and Blue color channel values (0-255) into standard CSS HEX codes.

Validate JSON strings and identify syntax errors, missing brackets, or bad quotes.

Convert between Indian numbering (Lakhs, Crores) and international systems (Millions, Billions).

Calculate your Body Mass Index (BMI) and discover your healthy weight category.

Estimate your daily maintenance and weight loss caloric requirements using the Mifflin-St Jeor formula.

Calculate your recommended daily water consumption in liters and glasses based on weight and exercise.

Convert spreadsheet CSV rows into structured JSON array objects locally in your browser.