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FastToolSuite – Free Online Tools

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Developer Tools

JSON Formatter

Format, validate and beautify JSON with syntax highlighting. Copy formatted JSON with a single click.

Open JSON Formatter

Base64 Tool

Encode text to Base64 or decode Base64 strings. Supports Unicode characters and instant conversion.

Open Base64 Tool

Text Comparison

Compare two texts and see the differences highlighted line by line. Easily spot additions, deletions, and modifications.

Open Text Comparison

Case Converter

Convert text to different cases: UPPERCASE, lowercase, Capitalized Case, and Sentence case. Instant conversion with copy functionality.

Open Case Converter

More Developer Tools

Explore our complete collection of developer tools including timestamp converter, QR generator, and more.

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Fun Tools

Coin Flip & Dice Roll

Flip a virtual coin or roll a virtual dice. Perfect for making quick decisions or playing games. Simple and fun to use.

Open Coin Flip & Dice Roll

Date Tools

Time Zone Converter

Convert time between different time zones with interactive world map. Perfect for scheduling international meetings.

Open Time Zone Converter

Time Difference Calculator

Calculate the time difference between two times. Get the result in hours and minutes format. Simple and accurate time calculations.

Open Time Difference Calculator

Age Calculator

Calculate exact age between two dates. Perfect for determining age or time duration in years, months, and days.

Open Age Calculator

More Date Tools

Explore our complete collection of date and time tools including timestamp converter and more date utilities.

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Health Tools

BMI Calculator

Calculate your Body Mass Index (BMI) and determine your weight category. Quick and easy way to assess if your weight is healthy.

Open BMI Calculator

Utility Tools

Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports milliseconds and various date formats.

Open Timestamp Converter

QR Code Generator

Generate QR codes for URLs, text, or contact information. Customize size and download as image.

Open QR Generator

PDF Merger

Combine multiple PDF files into a single document. Simple drag-and-drop interface with custom ordering.

Open PDF Merger

Color Picker

Pick colors using an intuitive color wheel or input HEX/RGB values. Get color codes in multiple formats.

Open Color Picker

More Utility Tools

Explore our complete collection of utility tools including password generator, lorem generator, and more.

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Finance Tools

EMI Calculator

Calculate your Equated Monthly Installment (EMI) for loans. See monthly payment, total interest, and total payment over the loan tenure.

Open EMI Calculator

Advance SIP Calculator

Advanced Systematic Investment Plan calculator with step-up SIP & SWP features. Plan your investments with yearly increment and detailed withdrawal analysis.

Open Advanced SIP Calculator

SIP Calculator

Calculate your Systematic Investment Plan (SIP) returns. See how small regular investments grow over time.

Open SIP Calculator

Lumpsum Calculator

Calculate returns on one-time investments. See the final amount and total profit based on your investment period.

Open Lumpsum Calculator

Income Tax Calculator

Calculate your income tax based on latest tax slabs. Account for exemptions and deductions to find your tax liability.

Open Tax Calculator

FD Calculator

Calculate your Fixed Deposit returns. See the maturity amount and total interest earned based on your investment period.

Open FD Calculator

More Finance Tools

Explore our complete collection of financial calculators including advanced SIP, lumpsum, and tax calculators.

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