GeekDas
Free to use Β· No account needed

Free Tools for Everyday Tasks

No sign-up, no install, no nonsense.Converters, calculators, formatters, generators and more. All instant, all free.

All Tools

36

Text Formatter

Format your text in various styles - uppercase, lowercase, title case, sentence case, and more.

HTML Editor

Write HTML, CSS, and JavaScript in a split-pane editor and see a live preview instantly. Resizable layout, boilerplate included - no setup needed.

Markdown Renderer

Write Markdown and see a live rendered preview instantly. Supports GitHub Flavored Markdown - tables, task lists, code blocks, strikethrough, and more.

PX to REM Converter

Convert pixels to REM units instantly. Supports custom root font size. Bidirectional - enter either value.

Image Resizer

Resize JPG, PNG, and WebP images directly in your browser. Set custom dimensions, lock aspect ratio, pick format and quality - 100% private, no upload.

Epoch Converter

Convert Unix timestamps to human-readable dates and back. Auto-detects seconds vs milliseconds. Includes a live current epoch clock.

JSON Formatter

Format and minify JSON data with customizable spacing options for better readability.

Password Generator

Generate secure passwords with customizable length and character types (uppercase, lowercase, numbers, symbols).

REM to PX Converter

Convert REM to pixels instantly. Useful for JS measurements and design handoffs. Supports custom root font size.

PX to EM Converter

Convert pixels to EM units based on parent font size. Bidirectional with custom parent font size support.

EM to PX Converter

Convert EM to pixels using a configurable parent font size. Ideal for debugging CSS layouts.

PX to VW Converter

Convert pixels to viewport width (vw) units. Set your target viewport size for accurate results.

VW to PX Converter

Convert viewport width (vw) to pixels at any viewport size. Great for responsive design calculations.

UUID Generator

Generate RFC 4122 compliant UUID v4 (random) identifiers. Generate single or multiple UUIDs at once.

Hash Generator

Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-384, SHA-512) from your text input.

Random Number Generator

Generate one or multiple random numbers within any range. Supports unique (no duplicate) results - great for giveaways, games, and sampling.

Color Converter

Convert between HEX, RGB, and HSL color formats instantly. Interactive color picker, one-click copy, and a common color reference table.

Base64 Encoder / Decoder

Encode text or files to Base64 and decode Base64 strings back to plain text. Supports URL-safe Base64. Runs entirely in your browser, 100% private.

URL Shortener & Linktree

Shorten URLs and create your personal link-in-bio page to share all your important links in one place.

Date Invite Maker

Create a fun "would you go on a date with me?" card and send the link to your crush or partner. The No button does not go down without a fight.

Upwork Proposal Formatter

Bold and italic key skills and results in your Upwork proposal with Unicode styling so it stands out in the feed. Includes accessibility warnings, character counter, and smart highlight suggestions.

UTM Link Builder

Add UTM parameters to any link with a live preview, one-click presets for Google, Facebook, LinkedIn and email, automatic clean-up, and warnings for common tracking mistakes.

Would You Rather Maker

Create a "Would You Rather" poll with two options and share the link with friends. Watch votes roll in live as people pick a side.

Spin the Wheel

A random decision-maker wheel. Add your own options or pick a preset like what to eat or who pays, spin, and share the wheel with a link.

Countdown Timer

Count down to a birthday, trip or launch with a live days, hours, minutes and seconds card. Pick a theme and share the link so friends see the same countdown.

Age Calculator

Find your exact age in years, months and days, total days lived, the weekday you were born on and a countdown to your next birthday.

Days Between Dates Calculator

Calculate the number of days, weeks, months and years between two dates, with an option to include the end date.

Working Days Calculator

Count Monday to Friday business days between two dates and skip your own holidays to see the real number of working days.

Word & Character Counter

Count words, characters, sentences and paragraphs as you type. See reading time, top keywords and check limits for X posts, SMS and meta descriptions.

EMI Calculator

Calculate the monthly EMI, total interest and total payment for a home, car or personal loan, with a year-by-year and month-by-month amortization schedule.

Text Diff Checker

Compare two texts or code snippets and see added, removed and changed lines with word-level highlights. Side-by-side or unified view, with options to ignore case and whitespace.

Finger Picker

Everyone puts a finger on the phone screen and the app randomly picks a winner or sets the order. Great for deciding who goes first or who pays. Mobile only.

JWT Decoder

Paste a JSON Web Token to view its header, payload and claims with readable timestamps and a live expiry check. Decoded in your browser, never uploaded.

Cron Expression Explainer

Translate any cron expression into plain English, see a field-by-field breakdown and preview the next run times. Includes common presets.

Image Metadata Remover

Strip EXIF, GPS location and camera info from JPEG, PNG and WebP photos before sharing. Processed in your browser, never uploaded.

Invoice Generator

Create a professional invoice with line items, tax and discount, preview it live and download it as a PDF. No signup, nothing uploaded.

Can't find the tool you need?

Tell me what to build next. Every suggestion gets read.

Suggest a tool

Blog

Latest Articles

Insights, guides, and dev tips

View all

FAQ

Frequently Asked Questions

Everything you need to know about GeekDas and its tools.

Most tools run entirely in your browser using client-side JavaScript, no internet connection is needed after the page loads. A small number of tools (like HTML to PDF) send data to my server for processing, but results are never stored.

Yes. Client-side tools (converters, formatters, generators) process everything locally in your browser, your data never leaves your device. For server-assisted tools, data is used only to generate the output and is discarded immediately.

PX - REM, PX - EM, PX - VW, and related converters use standard CSS formulas. You can set a custom root font size (default 16px) or viewport width to match your project configuration, giving you accurate values for any setup.

Yes. All tools are fully responsive and work on phones and tablets. The layout adapts to your screen size so you can convert, format, or generate values on any device.

The Hash Generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512. All hashing is done client-side in your browser, your input text is never sent to a server.

No. Passwords are generated entirely in your browser using the Web Crypto API. Nothing is logged, stored, or sent anywhere, each password exists only in your browser session.

Absolutely. If there is a utility you wish existed on GeekDas, use the contact form or reach me at support@geekdas.in. I regularly add new tools based on community requests.

Still have questions?

Can't find the answer you're looking for? Send me a message and I'll get back to you.

Contact Me

Or reach me on

support@geekdas.inLinkedInGitHub@geekdasu/geekdas_geekdas
Chat with us1