PlayTools

All Tools

67 free tools — no account, no installation required.

Finance

Loan Repayment Calculator

A free loan repayment calculator for monthly payments, total interest, and the full cost of borrowing on any fixed-rate loan — mortgage, car, student or personal.

Mortgage Calculator

Use this free mortgage calculator to estimate your monthly payment with principal, interest, property tax, home insurance, PMI and HOA — plus total interest and how extra payments shorten the loan.

Auto Loan Calculator

Estimate a car loan's monthly payment from vehicle price, down payment, trade-in, sales tax, APR and term — with total interest and the true cost of the car.

Loan Affordability Calculator

Find the maximum loan amount you can afford based on your monthly budget and interest rate.

Salary Calculator

Convert a wage between hourly, daily, weekly, biweekly, monthly and annual pay. Adjust hours per week and unpaid time off to see every gross equivalent.

Sales Tax Calculator

Add sales tax to a price or work backwards from a tax-included total. Load a US state base rate or enter your own combined rate.

Currency Converter

Convert between 30 world currencies with live or manual exchange rates. Handles USD, EUR, GBP, JPY, CNY, and more.

Percentage Calculator

A percentage calculator with three modes: find a percentage of a number, work out what percent one value is of another, and calculate percentage increase or decrease between two values.

Discount Calculator

Calculate final price after a discount, the savings amount, or reverse-engineer the discount rate from two prices.

Tip Calculator & Bill Splitter

Calculate the tip amount and split the total bill equally between any number of people.

Compound Interest Calculator

See how investments grow over time with compound interest, including regular monthly contributions.

ROI Calculator

Calculate return on investment as a percentage, net profit, and the annualized rate (CAGR) over the holding period.

Date & Time

Date Difference Calculator

Calculate the exact number of days, weeks, and months between any two dates. Handles leap years automatically.

Date Calculator — Add or Subtract Days

Add or subtract years, months, weeks and days from any date to get the resulting date and weekday. Answers "what date is 90 days from today?"

Age Calculator

Calculate exact age in years, months, and days from a date of birth. Shows total days lived and days until next birthday.

Timezone Converter

This timezone converter turns any date and time from one zone into another. Convert timezone for meetings, travel, or deadlines across 18 world cities — daylight saving is applied automatically.

Unix Timestamp Converter

Convert a Unix timestamp (seconds or milliseconds) to a readable date in UTC, ISO 8601 and local time — and convert any date back to a timestamp. Live current epoch time.

Business Days Calculator

Count the working days between two dates, excluding weekends and, optionally, the eleven US federal holidays, with a full day breakdown.

Developer

JSON Formatter & Validator

Format, validate, and minify JSON with syntax highlighting and error detection. Runs entirely in your browser.

JSON to CSV Converter

Convert a JSON array of objects to CSV with a choice of delimiter and an optional header row. Handles missing keys and nested values.

CSV to JSON Converter

Convert CSV to a JSON array of objects or arrays, with delimiter choice, header handling and optional number/boolean type inference. RFC 4180 quoting respected.

YAML to JSON Converter

Convert YAML to JSON in your browser, with a choice of indent or minified output and clear parse-error messages. Anchors and aliases are expanded.

JSON to YAML Converter

Convert JSON to block-style YAML in your browser, with a choice of indent and optional key sorting. Strings are quoted only when ambiguous.

CSS Formatter & Minifier

Beautify CSS with one rule per line and indented at-rules, or minify it by stripping comments and whitespace. String- and url()-safe.

HTML Formatter & Minifier

Beautify HTML by re-indenting to nesting depth (inline content stays on one line, pre/script/style preserved), or minify it by collapsing whitespace between tags.

Base64 Encoder / Decoder

A free Base64 encoder and decoder: encode text to Base64, or decode a Base64 string back to plain text. Unicode, emoji and non-Latin characters are handled correctly, and nothing leaves your browser.

Hash Generator (SHA-1, SHA-256, SHA-384, SHA-512)

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or a file, entirely in your browser with the Web Crypto API. Nothing is uploaded.

JWT Decoder

Decode a JSON Web Token to read its header and payload, with exp, iat and nbf shown as readable dates and an expiry check. In-browser; the signature is not verified.

Number Base Converter

Convert an integer between binary, octal, decimal, hexadecimal and any base from 2 to 36, live. Arbitrary-size integers supported.

Color Converter — HEX, RGB, HSL

Convert colors between HEX, RGB, HSL, and HSB/HSV formats instantly. Includes a visual color picker.

URL Encoder / Decoder

A URL encoder and decoder in one: percent-encode special characters and Unicode for safe use in a URL, or decode a percent-encoded URL back to readable text.

URL Shortener

Turn long URLs into short, shareable links via TinyURL, is.gd, or cleanuri — with a one-tap copy button, QR code, and local history. No sign-up required.

Regex Tester

Test regular expressions with live match highlighting. Supports flags (g, i, m) and shows capture groups.

HTML Encoder / Decoder

An HTML encoder and decoder in one: escape the characters that would otherwise be read as markup into HTML entities, or decode HTML entities back to plain text.

Cron Expression Generator

Build and validate cron expressions visually with a plain-English schedule description. Copy-paste ready output.

SEO

Meta Tag Generator

Build a copy-paste <head> block — title, description, canonical, robots, Open Graph and Twitter Card tags — with a live Google result preview and character counters.

Slug Generator

Turn any title into a clean, URL-safe slug: lowercased, accent-stripped, punctuation removed, words joined with a hyphen or underscore. One title per line.

robots.txt Generator

Build a valid robots.txt from per-user-agent Allow/Disallow rules, a sitemap line and an optional crawl-delay, with presets including blocking AI crawlers.

Keyword Density Checker

Paste text to see word and phrase frequency and density for one-, two- and three-word phrases, with stop-word filtering. Spot missing topics and keyword stuffing.

Text

Word Counter & Character Count

Count words, characters, sentences, and paragraphs instantly. Includes reading time estimates.

Character Counter

Count characters with and without spaces, plus words, lines and sentences, with live progress against meta title, meta description, SMS and tweet limits.

Case Converter

A case converter for any text: switch between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case and kebab-case, then copy the result.

Find and Replace Text

Find and replace across a block of text — plain or regular-expression search, case-insensitive matching, and $1 group references in regex mode. Shows the match count.

Sort Text Lines

Sort lines alphabetically, numerically, by length, in reverse or shuffled, with options to trim, drop blanks, remove duplicates and ignore case.

Remove Duplicate Lines

Strip repeated lines from a list, keeping the first or last occurrence, with trim, case-fold, blank-line and sort options. Shows how many lines were removed.

Diff Checker

Compare two blocks of text and see a line-by-line diff with added and removed lines highlighted, plus options to ignore whitespace and case.

Markdown Editor & Preview

Write Markdown with a live side-by-side HTML preview. Supports full CommonMark syntax. Runs in your browser.

Images

Image Compressor

Compress JPEG, PNG or WebP in your browser. Cap the long edge, set quality, compare file sizes and download. Nothing is uploaded.

Image Resizer

Resize an image by pixels or percent, keep the aspect ratio, and export JPEG, PNG or WebP. Runs entirely in your browser.

Image Converter — PNG, JPEG, WebP

Convert images between PNG, JPEG and WebP in your browser. Preview the result and download. Nothing is uploaded.

Image Cropper

Crop photos in the browser with free or locked ratios (1:1, 4:3, 16:9, 9:16). Drag to reframe and download. Nothing is uploaded.

Image Rounded Corners

Round image corners in your browser: drag the slider to set the rounded corner radius, preview it on a checkerboard, keep the corners transparent as PNG or WebP, and download. Nothing is uploaded.

Image to Base64 Converter

Turn an image into a Base64 data URI (or raw Base64), or paste Base64 back into a PNG. Encoding stays in your browser.

Favicon Generator

A free favicon generator that converts PNG, JPG, WebP or SVG — or a few letters or an emoji — to a multi-size favicon.ico (16, 32 and 48 px), a dark-mode-aware favicon.svg, Apple touch icon, Android Chrome 192/512, HTML tags and a web manifest. Runs in your browser.

App Icon Generator

Generate iOS and Android app icons from one image: AppIcon sizes including 1024×1024, mipmap densities, and a 512 Play Store asset. Nothing is uploaded.

Chrome Extension Icon Generator

Create Chrome extension icons at 16, 32, 48 and 128 from one image. Download a ZIP with an icons/ folder and a manifest.json snippet. Nothing is uploaded.

ID Photo Maker & Background Remover

A free ID photo maker that runs in your browser: remove background from a photo with on-device AI and turn it into a standard ID or passport photo — pick the size and background color, plus an optional 6-inch print sheet. Nothing is uploaded.

Utilities

Password Generator

Generate strong random passwords with custom length, uppercase, lowercase, numbers, and symbols.

Random Number Generator

Generate random integers or decimals within any range. Supports multiple numbers and no-duplicate mode.

BMI Calculator

Calculate your Body Mass Index (BMI) from height and weight in metric or imperial units.

TDEE & Calorie Calculator

Calculate your Total Daily Energy Expenditure and daily calorie targets for weight loss, maintenance, or gain.

Calorie Calculator

Find how many calories to eat per day to lose, maintain or gain weight, based on your BMR, activity level and goal (Mifflin-St Jeor equation).

Macro Calculator

Split a daily calorie target into grams of protein, carbs and fat using a preset or custom ratio, based on the 4/4/9 kcal-per-gram Atwater factors.

Body Fat Calculator

Estimate body fat percentage from tape measurements using the US Navy method, with body-fat category, fat mass and lean body mass.

Unit Converter

Convert between units of length, weight, temperature, area, and speed. Results update instantly.

UUID Generator

Generate RFC 4122 UUIDs in v1, v4, or v5 format. Options for quantity, uppercase, and hyphen formatting.

QR Code Generator

Create a QR code from text, a URL, or Wi-Fi login details in your browser. Download PNG or SVG. Nothing is uploaded.