Always Ready,Free Online Tools

Count characters, words, and lines in real-time. Supports full-width / half-width distinction. Free online tool.

Format, prettify, and validate JSON online. Supports 2-space, 4-space, and tab indent. Minify to one line. Free tool.

Encode text to Base64 or decode Base64 strings back to text. Supports Unicode and URL-safe encoding. Free online tool.

Encode text to percent-encoded URL format or decode URL strings. Handles Unicode and Japanese characters. Free tool.

Convert text to UPPER, lower, Title, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE. Free online tool.

Free online QR code generator. Create QR codes from URLs, text, Wi-Fi credentials and more. Download as PNG instantly.

Free online color converter. Convert between HEX, RGB, HSL, and HSB/HSV instantly. Color picker included.

Generate strong random passwords with uppercase, lowercase, numbers, and symbols. Runs in your browser. Free tool.

Convert Unix timestamps to readable dates and vice versa. Supports seconds and milliseconds. Runs in your browser.

Convert length, weight, temperature, area, volume, and speed units. Supports metric and imperial. Free online tool.

Test regular expressions with real-time match highlighting, match count, and group captures. Runs in your browser.

Calculate your exact age in years, months, and days. Shows total days, weeks lived, and days until next birthday.

Calculate your BMI from height and weight. Get your weight category and see how far you are from a healthy range.

Calculate monthly payment, total repayment, and interest for any loan. Works for mortgages, car loans, and more.

Pomodoro timer with customizable work/break cycles, session tracking, browser notifications, and audio alerts.

Convert PNG, JPG, WebP, BMP, and HEIC to any format. Batch convert with ZIP download — all in your browser.

Combine multiple images into a PDF. Reorder pages, choose A4/Letter/original size, set margins — all in your browser.

Compute SHA-1, SHA-256, and SHA-512 hashes instantly in your browser. No data is sent to any server. Free tool.

Write Markdown and see a live HTML preview side by side. Supports headings, lists, code blocks, and tables. Free tool.

Compare two texts and see added, removed, and unchanged lines side by side. Perfect for code, documents, and configs.

Generate UUID v4 identifiers in your browser using the Web Crypto API. Create one or many — no libraries required.

Generate Lorem Ipsum text by paragraphs, sentences, or words. Supports classic Latin and Japanese dummy text. Free tool.

Convert between binary, octal, decimal, and hexadecimal instantly. Supports negative numbers and custom bases.

Resize PNG, JPG, WebP, and GIF in your browser. Set exact dimensions, keep aspect ratio, and download instantly.

Turn any title or phrase into a clean URL slug. Supports hyphen/underscore separators and accented characters.

Decode any JWT to inspect its header, payload, and claims. Shows expiry and human-readable timestamps. No server upload.

Count words, characters, sentences, and paragraphs instantly. Estimates reading and speaking time. Free online tool.

Calculate percentages, find what percent X is of Y, compute increase/decrease, and reverse-calculate original values.

Generate complementary, analogous, triadic harmonies from any base color. Copy any color as HEX, RGB, or HSL.

Parse any cron expression into plain English and see the next 10 execution times. Supports standard 5-field cron syntax.

Calculate aspect ratios, find missing dimensions, and resize while keeping proportions. Perfect for video and web.

Encode special characters to HTML entities (&, <, >) or decode them back. Supports named and numeric entities.

Create linear, radial, and conic CSS gradients with live preview. Customize color stops and copy the CSS instantly.

Convert JSON to CSV or CSV to JSON in your browser. Supports quoted fields and nested values. No upload required.

Format SQL online. Uppercases keywords, adds indentation, and splits clauses to separate lines — runs in your browser.

Convert text into fancy Unicode styles — bold, italic, script, fraktur, double-struck, monospace, and more.

Repeat any text a set number of times with a custom separator. Perfect for test data and repeated patterns. Free tool.

Create Markdown tables visually. Edit cells, add rows and columns, set alignment, and copy the result instantly.

Minify JavaScript, CSS, and HTML online. Removes comments and whitespace to shrink file size — runs in your browser.

View your browser, OS, screen resolution, timezone, language, and IP — nothing sent to any server.

Reference for ISO A, ISO B, JIS B, and US paper sizes. View in mm, cm, or inches. Includes ID and resume photo sizes.

Calculate gacha pull probabilities for a given rate and attempts. Shows cumulative odds and pulls to reach 50/90/99%.

Calculate future value of monthly investments with compound interest. Visualize principal vs. returns over time.

Fix garbled Japanese text (mojibake) from encoding errors. Reverses UTF-8, Shift_JIS, and EUC-JP mismatches. Free tool.

Sort lines of text alphabetically, by length, or randomly. Remove duplicates and empty lines in one click. Free tool.

Convert between Arabic numbers and Roman numerals. Supports 1–3999 with a detailed symbol breakdown. Free online tool.

Convert HTML to Markdown in your browser. Supports headings, lists, links, code blocks, and tables. Free online tool.

Compress images in your browser — no server upload. Adjust quality and pick WebP, JPEG, or PNG output. Free tool.

Convert text to Morse code and play it as audio. Also supports decoding Morse code back to text. Free online tool.

Mix two colors at any ratio to generate a blended color. Copy the result as HEX or RGB. Free online color blending tool.

Calculate tax-inclusive and tax-exclusive prices instantly. Supports Japan's 10% and 8% reduced rates. Free online tool.

Count characters and words, then estimate reading and speech time for any text. Supports Japanese and English.

Calculate the difference between two dates in days, weeks, months, and years. Great for planning and deadline tracking.

Calculate BMR and TDEE with the Mifflin-St Jeor formula. Find target calories for weight loss, maintenance, or gain.

Estimate body fat percentage and lean mass using the US Navy method. Enter height, neck, waist, and hip measurements.

Find the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed at natural cycle boundaries.

Generate CSS box-shadow code with live preview. Adjust offset, blur, spread, color, and opacity — copy with one click.

Check text/background contrast against WCAG 2.1 AA and AAA standards. Get instant pass/fail results with a live preview.

Remove duplicate lines from text. Preserves order with case-insensitive matching and whitespace trimming. Free tool.

Count Japanese characters with genkou yoshi conversion, X/Twitter weighted count, and resume length guide. Free tool.

Format numbers in US, EU, Japanese unit (万/億/兆), and currency formats all at once. Free online number formatting tool.

Analyze character and word frequency in text. Ranked bar charts, tab switching, filter options. Free online tool.

Countdown to multiple events in real time. Save up to 10 events in your browser. Free online countdown timer tool.

View EXIF metadata from JPEG images — camera model, date, GPS, and exposure — directly in your browser. No upload.

Play 2048 online for free. Slide tiles to combine numbers and reach the 2048 tile. No download needed — runs entirely in your browser.

Play Minesweeper free online. Clear the board without hitting mines. Three difficulty levels. Runs entirely in your browser — no download needed.

A free idle clicker game. Tap to collect stars, buy upgrades, and watch your star count grow automatically. No login needed — runs in your browser.

Test your reaction speed online for free. Click when the screen turns green. Compare your average with world rankings. No install needed.

Play the classic Snake game online for free. Guide the snake to eat food and grow without hitting walls or yourself. Runs in your browser.

Play the Memory Card matching game free online. Flip cards to find matching pairs. Track your moves and beat your best score. No install needed.

Drop Tetris-like blocks to fill rows and columns. Clear lines to score points and chain combos. Free online puzzle game, no install needed.

Check your download speed instantly with a fluid stream animation that visually shows how fast your connection is. 5-round median measurement. No signup, no ads.