Tools
Fast calculators, converters, and developer helpers — plus image, PDF and audio tools that work on your files without uploading them.
Everyday tools
Calculators, converters and developer helpers — type in, get an answer.
Calculator
A full calculator with correct order-of-operations, parentheses, scientific functions, memory keys, a saved history tape, and full keyboard support.
Open toolEMI Calculator
Work out the equated monthly instalment (EMI) for a loan from the amount, interest rate, and tenure — plus total interest and total payable.
Open toolSIP Calculator
See how a recurring monthly investment could grow over time at an expected annual return — with your invested amount and estimated returns split out.
Open toolCompound Interest
See how a lump sum grows when interest compounds — across any rate, duration, and compounding frequency — with maturity value and total interest split out.
Open toolFD Calculator
Work out the maturity amount and interest earned on a cumulative fixed deposit, with your choice of compounding frequency.
Open toolRD Calculator
See what a fixed monthly recurring deposit grows to at maturity, with interest compounded quarterly the way Indian banks do.
Open toolSimple Interest
Calculate simple interest and the total amount for a principal over any period at a flat annual rate, with the interest and final payback shown separately.
Open toolGST Calculator
Add GST to a net amount or pull it out of a GST-inclusive price, with the CGST/SGST split shown — handy for Indian invoices and quick price checks.
Open toolLoan Comparison
Put two to four loan offers next to each other — amount, rate, and tenure — and instantly see which one costs the least in EMI and total interest.
Open toolGoal / Retirement Planner
Set a target corpus and a time frame, and see the monthly SIP you'd need to get there — with any savings you already have credited towards the goal.
Open toolSWP Calculator
See how long a corpus lasts — or what's left at the end — when you withdraw a fixed amount every month and the balance keeps earning a return.
Open toolIncome Tax Estimator
Estimate your Indian income tax for FY 2025-26 and 2026-27 under the new or old regime — slabs, the 87A rebate, surcharge, and 4% cess all worked out for you.
Open toolDiscount Calculator
Work out a sale price, the percentage you were given, or the original ticket price — and see what two stacked discounts really come to. Free and in your browser.
Open toolTip & Bill Splitter
Split a restaurant bill between any number of people, with a tip, optional tax, and the option to round each share. Shows exactly what everyone owes.
Open toolJSON Formatter
Paste raw JSON and get it neatly indented, minified, or validated — entirely in your browser, with a clear error message pointing to anything invalid.
Open toolBase64 Encoder / Decoder
Encode any text to Base64 or decode it back, instantly and locally — with full Unicode and emoji support, and nothing ever leaving your browser.
Open toolUUID Generator
Create one or many version-4 UUIDs for IDs, keys, and test data — generated securely on your device with the Web Crypto API, ready to copy in bulk.
Open toolEpoch / Timestamp Converter
Convert a Unix timestamp to a date and back, in seconds or milliseconds, with ISO, UTC, and local formats shown side by side. Runs in your browser.
Open toolPassword Generator
Generate secure random passwords with your choice of length and character sets, using your browser's Web Crypto API — nothing is ever sent anywhere.
Open toolRandom String Generator
Generate random strings at any length from the character sets you choose — lowercase, uppercase, numbers, symbols — copy them one at a time or all at once.
Open toolHash Generator
Compute cryptographic hash digests of any text with SHA-1, SHA-256, SHA-384, and SHA-512 — locally, using your browser's built-in Web Crypto API.
Open toolJWT Decoder
Decode a JSON Web Token to read its header and payload claims in a readable format — locally in your browser, with no signature verification.
Open toolURL Encoder / Decoder
Encode text so it's safe to drop into a URL, or decode percent-encoded text back to readable form — instantly and entirely in your browser, nothing uploaded.
Open toolColor Converter
Convert a color between HEX, RGB, and HSL, with a live swatch preview and one-click copy — paste any of the three formats.
Open toolText Diff
Compare two blocks of text line by line and see exactly what was added, removed, or left unchanged — a quick side-by-side diff that runs in your browser.
Open toolJSON Diff
Compare two JSON objects and get a clear list of the fields that were added, removed, or changed — with full paths, so you spot every difference at a glance.
Open toolJSON ↔ CSV ↔ YAML
Convert data between JSON, CSV, and YAML in any direction — paste one, pick a target, and copy the result. Runs entirely in your browser, nothing uploaded.
Open toolRegex Tester
Test a regular expression against sample text with live match highlighting, a plain-English breakdown of your pattern, and a cheat sheet to learn from.
Open toolQR Code Generator
Generate a QR code for any text or URL and download it as a sharp SVG or PNG — encoded entirely in your browser, nothing uploaded.
Open toolQR Code Reader
Read a QR code from a photo, a screenshot, or your camera, and see the link, text, or Wi-Fi details it holds — decoded right in your browser.
Open toolBarcode Generator
Generate scannable Code 128, Code 39, EAN-13, EAN-8, UPC-A, ITF-14 and Codabar barcodes, with the check digit calculated for you. Download as SVG or PNG.
Open toolToken Counter
Estimate the token count of a prompt across GPT, Claude, Gemini and Llama, with a likely range and a check on whether it fits your context window.
Open toolMarkdown Preview
Convert Markdown to formatted output as you type — headings, lists, tables, links, and code — with a one-click HTML view. Paste text or open a .md file.
Open toolWeb Playground
Write HTML, CSS, and JavaScript across three panes and watch it render instantly in a sandboxed preview. A fast scratchpad for an idea, snippet, or layout.
Open toolNumber Base Converter
Convert a number between binary, octal, decimal, hexadecimal or any base from 2 to 36, exactly — including 64-bit values that break most converters.
Open toolUnit Converter
Convert between units of length, weight, temperature, data, speed, volume, area, and time — instant, accurate, and entirely in your browser.
Open toolPercentage Calculator
Answer the three everyday percentage questions — what is X% of Y, X is what percent of Y, and percent change — with the working shown each time.
Open toolAge Calculator
Find an exact age from a date of birth — in years, months, and days — plus the total days, weeks, and months lived. Runs entirely in your browser.
Open toolDate Difference
Find the time between two dates as total days and weeks, and as a years/months/days breakdown — great for deadlines, ages, and anniversaries.
Open toolWord Counter
Count words, characters (with and without spaces), sentences, paragraphs, lines, numbers, special characters, and estimated reading time as you type.
Open toolCase Converter
Convert text between cases — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, and CONSTANT_CASE.
Open toolDate Calculator
Add or subtract time from any date and get the result with its weekday, in calendar units or in business days that skip weekends. Free and client-side.
Open toolRoman Numeral Converter
Convert numbers to Roman numerals and Roman numerals to numbers, with proper subtractive notation and validation that rejects malformed numerals.
Open toolNumber to Words
Spell a number out in the Indian system (lakh, crore) or the international number system (million, billion) — for a cheque, an invoice, or homework.
Open toolRandom Picker
Pick a random number, roll dice, flip coins, or draw names from a list — using your browser's cryptographic random generator, with nothing recorded.
Open toolBMI Calculator
Calculate your Body Mass Index and see the category, in metric or imperial units, with the healthy-weight range for your height. All in your browser.
Open toolCalorie Calculator
Work out your resting metabolic rate and the daily calories that implies at every activity level, using the Mifflin–St Jeor equation. Metric or imperial, entirely in your browser.
Open toolBody Fat Calculator
Estimate your body-fat percentage using the US Navy circumference method, with fat and lean mass in kilograms. Nothing you measure leaves your browser.
Open toolMacro Calculator
Convert a daily calorie figure and a macronutrient split into grams of protein, carbohydrate and fat, with the calories each one accounts for. Free and client-side.
Open toolWater Intake Calculator
Estimate daily fluid intake from body weight and exercise, shown as a range in litres, millilitres and cups — because the underlying rule of thumb isn't precise enough for a single number.
Open toolTo-do List
Capture tasks, tick them off, filter by status, and clear what's done — a simple to-do list saved on your device, with no signup and nothing synced.
Open toolReminder
Set a reminder for a date and time — get a browser alert while the tab is open, and download a calendar event so it reaches you after you've closed the site.
Open toolFocus Timer
A work-and-break interval timer with configurable lengths and a longer break every few rounds. Runs on a fixed end time so it stays accurate in a background tab.
Open toolStopwatch & Timer
A stopwatch with lap splits and fastest/slowest analysis, plus a countdown timer with quick presets. Both work from a fixed reference time, so a background tab doesn't cause drift.
Open toolMedia & documents
Work on images, PDFs and audio right here — the files never leave your device.
Image Compressor
Cut the file size of a JPG, PNG, or WebP with a quality dial and an optional size cap — the picture stays sharp, the download stays small.
Open toolImage Resizer
Scale a photo down by a percentage, or fit it within a maximum width and height while keeping its proportions — then save it as JPG, PNG, or WebP.
Open toolImage Converter
Change an image's format — JPG, PNG, or WebP — with a quality control for the lossy ones. Handy for shrinking with WebP or getting a shareable JPG.
Open toolMeme Generator
Caption your own image meme-style — bold white text with a black outline, top and bottom — with a live preview, then download it as a PNG.
Open toolMetadata Remover
Remove the hidden metadata a photo carries — GPS location, camera model, timestamps, edit history — from a JPG or PNG, losslessly, before you share it.
Open toolImage Cropper
Drag a box over an image to cut it down to size, lock it to a ratio like 1:1 or 16:9, rotate in quarter-turns, and save the result as PNG or JPG.
Open toolWatermark Image
Stamp your own text — a name, ©, or a URL — across an image as a single diagonal mark or a repeated tiled pattern, with the size, colour, and opacity you set.
Open toolFavicon Generator
Make a website favicon from your own image — a multi-size favicon.ico plus the PNGs browsers, Apple, and PWAs expect, with a ready-to-paste HTML snippet.
Open toolColour Palette Extractor
Extract the dominant colours from a photo or design as swatches with copy-ready HEX, RGB, and HSL — great for matching a brand or building a colour theme.
Open toolImage to Base64
Convert a PNG, JPG, SVG or WebP into a Base64 data URI, ready to paste into HTML, CSS, Markdown or JSON — with the right MIME type worked out for you.
Open toolMerge PDF
Join two or more PDFs into a single file, in whatever order you choose — reorder them first, then download the result. All in your browser, nothing uploaded.
Open toolSplit PDF
Extract a page range from a PDF into a new file — type something like 1-3, 5, 8- and download just those pages. Runs in your browser, nothing uploaded.
Open toolRotate PDF
Rotate every page of a PDF by 90°, 180°, or 270° and download the corrected file — perfect for fixing scans that came out rotated.
Open toolImages to PDF
Combine photos or scans (JPG or PNG) into a single PDF — one image per page, in the order you arrange them. Built in your browser, nothing uploaded.
Open toolWatermark PDF
Add a text watermark to every page of a PDF — choose diagonal, tiled, or horizontal, set the size, colour, and opacity, and download a stamped copy.
Open toolAdd Page Numbers
Add page numbers to a PDF — pick a style (1 · 1 / N · Page 1 of N) and a corner, and optionally skip the cover page. Built in your browser, nothing uploaded.
Open toolPDF to Images
Render the pages of a PDF to images — pick a page range, choose PNG or JPG and a quality, and download each page as a picture.
Open toolExtract Text from PDF
Pull the selectable text from a PDF into plain text you can copy or download — page by page, entirely in your browser. No OCR, so scanned pages won't work.
Open toolOrganize PDF
Rearrange or remove a PDF's pages visually — drag through the thumbnails, drop the ones you don't need, and rebuild a clean PDF.
Open toolProtect PDF
Lock a PDF with a password using AES-256 encryption, and optionally restrict printing, copying or editing — all done inside your browser.
Open toolUnlock PDF
Strip the password from a PDF you can already open, so it stops asking every time. Runs entirely in your browser — the file and password stay on your device.
Open toolAudio Trimmer
Trim an MP3, WAV, M4A or OGG file to the section you need, see the waveform as you choose it, and export the result — all inside your browser.
Open toolText to Speech
Paste text and hear it read aloud using the voices already installed on your device — adjust speed, pitch and volume. No account, no upload, no cost.
Open toolVoice Recorder
Record audio from your microphone with a live level meter, play it back, and download it. Nothing is uploaded and the mic is released the moment you stop.
Open tool