Free Online Tools for Developers, Business & Students

Calculators, generators, and utilities that run entirely in your browser. No sign-up, no installs, always free.

126 Free Tools and Counting

Free File Conversion up to 200MB

Browse All Tools

126+

Free Tools

Popular Tools

Jump straight into one of our most-used tools.

JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting.

Developer

EMI Calculator

Calculate monthly loan EMI, total interest, and repayment schedule.

Business

CGPA / Percentage Calculator

Convert your CGPA to percentage or calculate CGPA from subject grades instantly.

Student

JSON ⇄ Excel Converter

Convert a JSON array of objects to an Excel spreadsheet, or Excel back to JSON.

Converters

Mortgage Calculator

Calculate your monthly mortgage payment, total interest, and a year-by-year amortization summary.

Finance

GST Calculator

Add or remove GST from any amount with a clear breakdown.

Business

Tool of the Day

World Clock

Add and reorder cities to see their current local time with a day/night indicator.

Recommended for you

Popular picks to get you started

JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting.

Developer

EMI Calculator

Calculate monthly loan EMI, total interest, and repayment schedule.

Business

CGPA / Percentage Calculator

Convert your CGPA to percentage or calculate CGPA from subject grades instantly.

Student

Browse by Category

Developer Tools

Code utilities to speed up everyday development tasks.

Explore

Business Tools

Calculators and generators for professionals & entrepreneurs.

Explore

Student Tools

Academic and career tools to help you study and apply.

Explore

Converters Tools

Convert files between formats — data, documents, images, and more.

Explore

Finance Tools

Loan, investment, and tax calculators for personal financial planning.

Explore

Featured Tools

View all

CGPA / Percentage Calculator

Convert your CGPA to percentage or calculate CGPA from subject grades instantly.

Student

EMI Calculator

Calculate monthly loan EMI, total interest, and repayment schedule.

Business

GST Calculator

Add or remove GST from any amount with a clear breakdown.

Business

JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting.

Developer

Word Counter

Count words, characters, sentences, and estimated reading time.

Student

QR Code Generator

Generate a downloadable QR code from any text or URL.

Developer

Pomodoro Study Timer

A 25/5 minute focus timer with a browser notification when time is up.

Student

Typing Speed Test

Test your typing speed and accuracy against a sample passage.

Student

Compound Interest Calculator

Calculate compound interest growth with a year-by-year breakdown.

Business

Hash Generator (MD5, SHA-1, SHA-256)

Generate MD5, SHA-1, and SHA-256 hashes from any text as you type.

Developer

JSON ⇄ Excel Converter

Convert a JSON array of objects to an Excel spreadsheet, or Excel back to JSON.

Converters

JSON ⇄ CSV Converter

Convert a JSON array of objects to CSV rows, or CSV back to JSON.

Converters

Markdown ⇄ HTML Converter

Convert Markdown to clean HTML, or HTML back into readable Markdown.

Converters

SRT ⇄ VTT Converter

Convert SubRip (.srt) subtitles to WebVTT, or VTT back to SRT.

Converters

ZIP Extractor

Unzip a .zip archive in your browser and download individual files or the whole thing.

Converters

Image Format Converter

Convert images between PNG, JPG, WebP, BMP, and GIF right in your browser.

Converters

Image Compressor

Compress JPG, PNG, or WebP images with an adjustable quality slider.

Converters

Merge PDF Files

Combine multiple PDF files into one, in the order you choose.

Converters

Image to Text (OCR)

Extract text from a photo, scan, or screenshot using on-device OCR.

Converters

Color Palette Generator

Generate harmonious color palettes with 5 harmony types, per-color locking, and CSS/Tailwind/JSON export.

Developer

Meme Generator

Add top, middle, and bottom text with custom fonts, colors, and image filters, then download as PNG.

Converters

Text Diff Checker

Paste two texts and see word-level or line-level differences highlighted.

Developer

JSON to TypeScript Interface Generator

Paste JSON to generate a TypeScript interface or type, with optional fields and naming control.

Developer

SQL Query Formatter

Paste unformatted SQL and get clean, properly indented output.

Developer

Advanced Home Loan Calculator

Calculate EMI with prepayment simulation, multi-rate comparison, and a monthly or yearly schedule.

Business

Habit Tracker

Track habits with custom colors, flexible frequency, completion stats, and day notes.

Student

Decision Spinner Wheel

Enter a list of options and spin an animated wheel to randomly pick one.

Student

Time Zone Converter

Convert a date and time from one time zone to another.

Converters

Base Number Converter

Convert between binary, octal, decimal, and hexadecimal instantly.

Converters

Mortgage Calculator

Calculate your monthly mortgage payment, total interest, and a year-by-year amortization summary.

Finance

Investment Compound Interest Calculator

Project investment growth with compound interest and optional monthly contributions, with a growth chart.

Finance

Latest from the Blog

View all

converters

Quick Image Tasks You Do Not Need Photoshop For: Memes, Watermarks, and Signatures

Three common image edits that do not require design software — adding meme text, watermarking a photo, and signing a document.

converters

Celsius, Fahrenheit, and Kelvin: Why We Have Three Temperature Scales

Where each temperature scale came from, the exact conversion formulas, and a few reference points worth memorizing.

developer

When to Use camelCase, snake_case, kebab-case, and Title Case

The naming conventions that show up across programming, URLs, and writing, and which one to reach for in each context.