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Calculators, text utilities, developer tools and converters — fast, accurate and completely free. All processed instantly, right in your browser.

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Popular Tools

The tools people reach for most — start here.

Age Calculator

Calculate your exact age in years, months and days.

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Percentage Calculator

Calculate percentages, increases and decreases instantly.

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BMI Calculator

Check your Body Mass Index and healthy weight range.

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Word Counter

Count words, characters, sentences and paragraphs.

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Password Generator

Generate strong, secure random passwords.

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QR Code Generator

Generate QR codes for text, URLs and more.

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JSON Formatter

Format, validate and beautify JSON data.

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Unit Converter

Convert length, weight, temperature and more.

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Loan Calculator

Calculate monthly loan payments and total interest.

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Case Converter

Convert text to upper, lower, title or sentence case.

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MD5 Generator

Generate MD5 hash of any text string.

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Color Picker

Pick colors and get HEX, RGB and HSL values.

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Calculator Tools

Everyday math and calculation tools.

Age Calculator

Calculate your exact age in years, months and days.

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Percentage Calculator

Calculate percentages, increases and decreases instantly.

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Scientific Calculator

Advanced calculator with trigonometric functions.

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Date Calculator

Calculate the difference between two dates.

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Time Calculator

Add or subtract hours, minutes and seconds.

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Percentage Increase Calculator

Calculate the percentage increase between two values.

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Percentage Decrease Calculator

Calculate the percentage decrease between two values.

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Average Calculator

Calculate the mean average of a list of numbers.

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Fraction Calculator

Add, subtract, multiply and divide fractions.

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Geometry Calculator

Calculate area and perimeter of common shapes.

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Triangle Calculator

Calculate triangle area, perimeter and angles.

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Circle Calculator

Calculate circle area, circumference and diameter.

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Square Root Calculator

Calculate square roots and nth roots of numbers.

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Exponent Calculator

Calculate powers and exponents of any base.

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Probability Calculator

Calculate the probability of single or combined events.

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Permutation & Combination Calculator

Calculate nPr and nCr values instantly.

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Text Tools

Tools to count, convert and clean up text.

Word Counter

Count words, characters, sentences and paragraphs.

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Character Counter

Count characters with and without spaces.

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Case Converter

Convert text to upper, lower, title or sentence case.

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Text Repeater

Repeat any text a custom number of times.

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Text Reverser

Reverse text, words or sentences instantly.

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Remove Line Breaks

Strip line breaks from any block of text.

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Lorem Ipsum Generator

Generate placeholder text for designs and mockups.

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Developer Tools

Encoding, hashing, formatting and dev utilities.

Password Generator

Generate strong, secure random passwords.

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Binary Converter

Convert between binary, decimal, octal and hex.

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Base64 Encoder

Encode text or data into Base64 format.

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Base64 Decoder

Decode Base64 strings back to plain text.

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URL Encoder

Encode URLs and query strings safely.

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URL Decoder

Decode percent-encoded URLs back to readable text.

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MD5 Generator

Generate MD5 hash of any text string.

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SHA256 Generator

Generate SHA-256 hash of any text string.

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JSON Formatter

Format, validate and beautify JSON data.

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HTML Minifier

Minify HTML code to reduce file size.

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CSS Minifier

Minify CSS code to improve load speed.

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JavaScript Minifier

Minify JS code by removing whitespace and comments.

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Color Picker

Pick colors and get HEX, RGB and HSL values.

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RGB to HEX Converter

Convert between RGB and HEX color formats.

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Financial Tools

Loans, EMI, savings and money calculators.

Loan Calculator

Calculate monthly loan payments and total interest.

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EMI Calculator

Calculate Equated Monthly Installments for any loan.

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Currency Converter

Convert between world currencies using fixed sample rates.

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Tip Calculator

Calculate tips and split bills with friends.

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Discount Calculator

Calculate sale prices and savings instantly.

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GST Calculator

Calculate GST inclusive and exclusive amounts.

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Mortgage Calculator

Estimate monthly mortgage payments.

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Savings Calculator

Project savings growth over time with interest.

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Profit Margin Calculator

Calculate profit margin and markup percentage.

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Break-Even Calculator

Find the break-even point for your business.

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Health Tools

BMI, calories and fitness calculators.

BMI Calculator

Check your Body Mass Index and healthy weight range.

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Pace Calculator

Calculate running pace, speed and finish time.

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Calorie Calculator

Estimate your daily calorie needs (TDEE).

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Body Fat Calculator

Estimate body fat percentage using the US Navy method.

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Ideal Weight Calculator

Estimate ideal body weight based on height.

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Utility Tools

Handy everyday generators and converters.

Random Number Generator

Generate random numbers within any range.

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Unit Converter

Convert length, weight, temperature and more.

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QR Code Generator

Generate QR codes for text, URLs and more.

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Barcode Generator

Generate scannable barcodes from numbers/text.

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Stopwatch

Simple online stopwatch with lap timing.

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Countdown Timer

Set a countdown timer for any duration.

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Questions

Frequently Asked Questions

Are all the tools really free?
Yes. Every tool on ToolBox Pro is completely free to use, with no hidden fees, no signup and no usage limits.
Do I need to create an account?
No account is required for any tool. Just open a tool page and start using it instantly.
Is my data safe and private?
Most calculations run directly in your browser using JavaScript, so your data is never sent to or stored on our servers.
Can I use these tools on mobile?
Yes, every tool is fully responsive and works smoothly on phones, tablets and desktops.
How do I save a tool for later?
Click the star icon on any tool card to add it to your Favorites, stored locally in your browser.

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