Free Tools.

Convert any text instantly to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, or kebab-case. One-click copy for each result.

Split-pane editor — write Markdown on the left, see the rendered HTML preview on the right in real time. Supports GFM tables, code blocks, task lists, and strikethrough.

Minimal distraction-free writing space that auto-saves to your browser. Markdown support, word count in the footer, export as .txt or .md. No login, no sync — just write.

Upload an image, set a target width and/or height, maintain aspect ratio optionally, and download the resized version. Supports JPG, PNG, and WebP output.

Choose from popular meme templates or upload your own image. Add top and bottom text with font size and color controls. Download as PNG. Simple and fast.

Record your screen, a specific window, or a browser tab using the browser's native Screen Capture API. Download as WebM. No extension required, no server involved.

Enter a date of birth and get the exact age in years, months, days, hours, and minutes. Shows the next birthday countdown and the day of the week you were born.

Enter height and weight in metric or imperial units to calculate Body Mass Index. Displays a visual scale with underweight, normal, overweight, and obese ranges.

Three modes in one: what is X% of Y, X is what % of Y, and percentage change from X to Y. Instant results for discounts, grades, growth rates, and more.

Generate one or many random numbers within a custom range. Options for integers or decimals, unique values only, and ascending/descending sort. Copy or download as a list.

Enter the bill total, choose a tip percentage, and split across any number of people. Supports itemized splitting — assign specific items to specific people for a fair breakdown.

Enter loan amount, interest rate, and term to get monthly payment, total interest paid, and a full amortization schedule. Supports both fixed and variable rate modes.

Convert across length, weight, temperature, volume, speed, area, and data size instantly. Currency conversion included via a free exchange rate API.

Set a target date and time and get a live countdown in days, hours, minutes, and seconds. Add a custom label, share via URL, and trigger a confetti burst on completion.

Pick a time and convert it across multiple time zones simultaneously. Highlights same-day vs next-day crossings. Essential for scheduling remote meetings across continents.

Enter your name, client name, line items with quantities and rates, tax, and due date. Generates a clean, professionally formatted invoice. Download as PDF. Zero login, zero ads.

Fill in structured sections — summary, experience, education, skills, and links — and see a live formatted CV preview. Choose from clean templates and download as PDF.

Create a deck of flashcards with a term and definition per card. Study mode flips cards, tracks correct vs incorrect answers, and reshuffles missed cards. Decks saved in browser.

Generate realistic fake names, emails, phone numbers, addresses, UUIDs, and more. Set quantity and format. Copy or download as JSON or CSV. Useful for testing and demos.

Enter width and height to get the simplified aspect ratio (e.g. 16:9). Or lock a ratio and enter one dimension to calculate the other. Useful for video, photography, and UI design.

Paste any JSON Web Token and instantly see the decoded header, payload, expiry, and issued-at date in a clean readable layout. Runs entirely in the browser — nothing sent anywhere.

Write a regex pattern and test it against live input with real-time match highlighting, capture group labeling, and a match count. Includes a replace mode with substitution preview.

Visual builder for cron schedule expressions. Configure minute, hour, day, month, and weekday visually and see the human-readable description update live. Copy for n8n, GitHub Actions, or crontab.

Encode or decode Base64 strings and files instantly. Also handles URL encoding/decoding and HTML entity encoding. Useful for auth headers, data URIs, and API payloads.

Enter two hex colors and instantly see their WCAG contrast ratio with AA and AAA pass/fail badges for normal and large text. Suggests nearby accessible alternatives if failing.

Paste messy or minified SQL and get it back clean, properly indented, and readable. Supports SELECT, INSERT, UPDATE, DELETE, CREATE, and JOIN syntax. Great for reviewing query logs.

Define a JSON schema using a visual builder or raw JSON and generate a realistic mock API response. Set status codes, headers, and response delay. Copy as fetch snippet or curl command.

Paste your n8n workflow JSON and get a full validation report — orphaned nodes, missing connections, unreachable branches, and loop detection. Built from real production n8n experience.