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Free Online Calculators — Fast & Accurate

Explore our suite of SEO-optimized, mobile-friendly tools for finance, health and daily utilities. No signup required — just open a tool and use it.

EMI Calculator

Calculate monthly EMI, total interest and view an amortization table. Includes downloadable CSV and interactive chart.

Open EMI Calculator

GST Calculator

Quick GST calculation with CGST/SGST or IGST split. Reverse-calc from total price supported.

Open GST Calculator

SIP Calculator

Projected SIP returns, total invested amount and graphical growth over time.

Open SIP Calculator

BMI Calculator

Body Mass Index (BMI) calculator with WHO-based category explanation.

Open BMI Calculator

More Useful Tools

Text processing, encoding, and time tracking tools to boost productivity.

HTML Beautifier

Format and beautify HTML code with proper indentation. Minify HTML to reduce file size.

Open HTML Beautifier

Base64 Encoder/Decoder

Encode text to Base64 and decode Base64 strings. Fast and secure base64 conversion.

Open Base64 Tool

Stopwatch & Timer

Track elapsed time with stopwatch or set a countdown timer with hours, minutes, and seconds.

Open Stopwatch/Timer

URL Encoder/Decoder

Encode URLs and special characters for web usage. Decode percent-encoded URLs instantly.

Open URL Tool

Word Counter

Count words, characters, sentences, paragraphs and get reading time estimates in real-time.

Open Word Counter

Developer & Coding Tools

JSON formatting, XML formatting, unique identifiers, and text analysis for developers.

JSON Formatter

JSON Formatter and JSON Validator help to auto format JSON and validate your JSON text. It also provides a tree view that helps to navigate your formatted JSON data.

Open JSON Formatter

XML Formatter

Format XML with proper indentation, validate syntax, and minify for smaller file sizes.

Open XML Formatter

UUID Generator

Generate random UUID v4 identifiers for databases, APIs, and applications. Batch generate up to 100 UUIDs.

Open UUID Generator

Character Counter

Count characters and analyze frequency. See which characters appear most often with real-time statistics.

Open Character Counter

About these tools

All tools are implemented with clean client-side JavaScript for minimal hosting cost and fast load times. Each tool page includes explanatory text to help with SEO and user understanding. Use the site as a template and split tools into individual pages for better indexing.