Free online tools, done right.

Pura → Gaj

Pura → Hectare

Pura → Square Metre

Pura → Marla

Chatak → Decimal

Are → Lessa

Killa → Bigha

Bigha → Kanal

Decimal → Bigha

Bigha → Gaj

Katha → Gaj

Katha → Decimal

Millisecond → Minute

Millisecond → Second

Second → Minute

Minute → Hour

Hour → Day

Day → Week

Second → Hour

Minute → Day

Nanosecond → Second

Microsecond → Second

Nanosecond → Millisecond

Microsecond → Millisecond

Nanosecond → Microsecond

Hour → Second

Day → Second

Minute → Millisecond

Week → Day

Day → Millisecond

Day → Nanosecond

Millisecond → Week

Nanosecond → Minute

Kilometre → Metre

Finger → Centimetre

Hand → Inch

Metre → Hand

Centimetre → Kilometre

Metre → Inch

Foot → Link

Millimetre → Point

US Bushel → US Gallon

Cubic Inch → Cubic Metre

US Quart → Imperial Fluid Ounce

Cubic Metre → Oil Barrel

US Teaspoon → Imperial Fluid Ounce

US Pint → Cubic Inch

Millilitre → US Fluid Ounce

Millilitre → US Quart

Celsius → Fahrenheit

Fahrenheit → Celsius

Celsius → Kelvin

Kelvin → Celsius

Fahrenheit → Kelvin

Kelvin → Fahrenheit

Celsius → Rankine

Rankine → Celsius

Foot-pound → Newton-metre

Joule → Newton-metre

Kilojoule → Kilowatt-hour

Kilowatt-hour → Joule

Megaelectronvolt → Kilowatt-hour

Megajoule → Foot-pound

Megajoule → Newton-metre

Kilojoule → Kilocalorie

Binary → Decimal

Binary → Hexadecimal

Decimal → Binary

Decimal → Hexadecimal

Hexadecimal → Binary

Hexadecimal → Decimal

Text to Binary

Binary to ASCII

Text to Hex

Hex to String

CSV to JSON

JSON to CSV

JSON to HTML

XML to CSV

CSV to XML

XML to JSON

JSON to XML

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text instantly — runs entirely in your browser, nothing is uploaded.

JSON Formatter & Validator

Format, validate and minify JSON in your browser. Pretty-print with 2/4-space or tab indent, catch errors with the exact line and column, then copy or download — nothing is uploaded.

Unix Timestamp Converter

Convert a Unix timestamp (epoch) to a human date and back — seconds or milliseconds, UTC / ISO 8601 / local / relative output, with a live current-epoch clock. Runs in your browser.

URL Encode / Decode

Percent-encode or decode URLs and URL components in your browser, with component vs full-URI mode and correct UTF-8 handling — nothing is uploaded.

SHA Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text live, using the browser’s native Web Crypto API — accurate, private, nothing uploaded.

UUID Generator

Generate RFC-compliant UUIDs — random (v4), time-ordered (v7), time-based (v1) and name-based (v5) — in bulk, with uppercase / no-hyphen / braces options and a UUID inspector. Runs entirely in your browser.

JWT Decoder

Decode a JSON Web Token to read its header and payload, see when it expires, and verify the HMAC (HS256/384/512) signature with your secret — entirely in your browser. The token is never uploaded.

JSON to TypeScript

Paste any JSON object and instantly get a fully-typed TypeScript interface — or a set of nested interfaces. Handles arrays, nested objects, optional properties, union types and null. Runs entirely in your browser.

Password Generator

Generate strong, cryptographically random passwords with custom length, uppercase, lowercase, numbers and symbols. Entropy-based strength meter. Runs entirely in your browser — nothing is uploaded.

CSS Formatter

Beautify or minify CSS in your browser — pretty-print minified CSS with proper indentation, or strip all whitespace and comments to get the smallest possible output. Nothing is uploaded.

Word Counter

Count words, characters (with and without spaces), sentences, paragraphs and reading time live as you type. Includes platform character-limit bars for X, Instagram, LinkedIn and Meta descriptions.

Case Converter

Convert text between UPPER CASE, lower case, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE and more — click any result to copy.

Text Diff Checker

Compare two texts and instantly see what changed — added lines green, removed lines red, unchanged lines grey. Line-by-line diff using the LCS algorithm, runs in your browser. Nothing is uploaded.

Color Converter

Convert a colour between HEX, RGB, HSL, HSV and CMYK live — pick a colour or type any value, copy the CSS, and see tints & shades, the nearest named colour and the WCAG contrast. Runs in your browser.

WCAG Contrast Checker

Check the WCAG 2.1 contrast ratio between any two colours instantly. Get AA and AAA pass/fail results for normal text, large text and UI components, with a live text preview. Runs in your browser.

Color Picker

Pick any colour with the HSL canvas picker and get the HEX, RGB, HSL and CSS values instantly. Save colours to a palette, browse your history, and use the eyedropper to sample from your screen. Runs in your browser.

CSS Gradient Generator

Generate linear, radial and conic CSS gradients with a live preview. Add colour stops, adjust positions, choose presets, and copy the ready-to-use CSS (with -webkit- prefix). Runs in your browser.

QR Code Generator

Generate QR codes for URLs, text, email, phone, Wi-Fi and vCard instantly in your browser. Custom size (128–1024 px), error-correction level, colours. Download as PNG or SVG. Nothing is uploaded.

Random Number Generator

Generate fair, unbiased random numbers in any range — with optional no-repeats (unique), decimals, sorting and bulk output. Uses your browser’s cryptographic CSPRNG with unbiased rejection sampling. Runs entirely in your browser — nothing is uploaded.

Random Picker Wheel

Spin a wheel of names to pick a random winner fairly. Add your own entries, spin, and an unbiased cryptographic draw chooses — with optional remove-after-spin for multiple winners, shuffle and a results log. Runs entirely in your browser — nothing is uploaded.

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text — paragraphs, sentences, words or list items — start with the classic “Lorem ipsum dolor sit amet…”, and copy plain text or ready-to-paste HTML. Runs in your browser, nothing uploaded.

EMI Calculator

Calculate your monthly EMI (Equated Monthly Instalment), total interest payable, total payment, and full amortisation schedule for any home loan, car loan, or personal loan. Runs entirely in your browser.

Mortgage Calculator

Calculate your monthly mortgage payment, total interest and full amortisation schedule. Enter home price, down payment, rate and term. Runs entirely in your browser.

Compound Interest Calculator

Calculate compound interest with optional monthly contributions. See final amount, total interest, growth chart and year-by-year breakdown. Includes Rule of 72. Runs in your browser.

ROI Calculator

Calculate return on investment (ROI %), CAGR (annualized return), net profit and profit multiple. Enter initial investment and final value or ROI%. Runs in your browser.

BMI Calculator

Calculate your Body Mass Index (BMI) from weight and height in metric or imperial units. Colour-coded result bar, BMI category, healthy weight range and ideal weight. Runs in your browser.

TDEE Calculator

Calculate Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR) using the Mifflin-St Jeor formula. Activity-level multipliers and calorie targets for weight loss, maintenance and gain. Runs in your browser.

GPA Calculator

Calculate your GPA on the US 4.0 scale — weighted (Honors / AP-IB) or unweighted — from courses with letter grades and credit hours. Includes a CBSE CGPA-to-percentage converter. Runs in your browser.

Percentage Calculator

Three-in-one percentage calculator: find what X% of a number is, calculate what percentage one number is of another, and compute percentage change. Instant results, runs in your browser.

Age Calculator

Calculate your exact age in years, months and days from date of birth. Shows total days, weeks and hours lived, the day you were born, and your next birthday countdown. Runs in your browser.

Tip Calculator

Calculate tip amount, total bill and per-person split instantly. Quick buttons for 10%, 15%, 18%, 20% and 25% tip, or enter a custom percentage. Supports multiple currencies and bill splitting for any group size. Runs in your browser.

Discount Calculator

Calculate the final sale price after a percentage discount, find the original price before a discount, or discover what percentage off a deal is. Three modes, preset discount chips (5%–70%), reference table, and India shopping context. Runs in your browser.

Image Compressor

Compress and resize JPG, PNG and WebP images in your browser — adjust quality, convert format, and see the exact before/after size and percentage saved before downloading. Nothing is uploaded.

HEIC to JPG Converter

Convert HEIC / HEIF photos from iPhone to JPG or PNG in your browser — drag and drop multiple files, choose quality, and download instantly. No upload, no sign-up.

Image to PDF

Combine one or more JPG, PNG or WebP images into a single PDF in your browser — choose page size (A4, Letter, A3), orientation, margin and image fit. Nothing is uploaded.

Compress Image to Size

Compress a JPG, PNG or WebP image to an exact target file size — 20 KB, 50 KB, 100 KB or any limit you set. Binary-searches the quality (and resizes if needed) to land just under the target. Ideal for exam-form photo and signature uploads. Runs in your browser — nothing is uploaded.

Image Resizer

Resize any JPG, PNG or WebP image to exact pixel dimensions, a percentage, or a longest-side limit — in your browser, nothing uploaded. Quick presets for Indian exam photos (200×200, 140×60, 300×300) and common web sizes (1280×720, 1920×1080). Download in JPEG, PNG or WebP.

Crop Image

Crop a JPG, PNG or WebP image to any aspect ratio, an exact rectangle, or a circle — drag the crop box, lock a ratio (1:1, 16:9, passport 7:9), rotate and flip, then download. Runs in your browser; nothing is uploaded.

Image to Base64

Convert any image (PNG, JPG, GIF, SVG, WebP) to a Base64 data URI in your browser and copy a ready-to-paste HTML <img>, CSS background or Markdown snippet — or decode a Base64 string back into a downloadable image. Nothing is uploaded.

Meta Tag Generator

Generate SEO meta tags, Open Graph tags and Twitter Card tags from a form. Live SERP preview with character-count warnings. Copy as HTML snippet — everything runs in your browser.

SERP Snippet Preview

Preview how your page will look in Google search results — title, URL breadcrumb and description snippet with live character-count warnings. Also see a social card preview (OG / Twitter). Nothing is uploaded.

Excel to JSON

Convert XLSX, XLS, ODS and CSV files to JSON in your browser. Pick a sheet, toggle first-row-as-headers, choose array-of-objects or array-of-arrays output, then copy or download the result. Files are never uploaded.