202+ free tools, no sign-up

Free Online
Calculators
& Converters

Mortgage, loan and savings calculators, PDF and image converters, SEO and developer utilities. 202+ fast tools that run privately in your browser.

Browse All Tools

No Sign-up Required

Popular Categories

Finance

Mortgage, loan, savings & salary calculators

SEO & Web

Meta tags, sitemaps & keyword tools

Documents

PDF, Word and data conversion

Images

Convert, compress & resize images

View All 202+ Tools

Finance

Professional financial calculators.

All Finance Tools

US Paycheck Calculator

Estimate your take-home pay after federal income tax, Social Security, Medicare, state tax and 401(k) contributions for 2026.

UK Take-Home Pay Calculator

Work out your UK salary after Income Tax, National Insurance, pension and student loan repayments for 2026/27.

Mortgage Calculator

Estimate monthly mortgage payments including principal, interest, taxes, and insurance.

House Affordability Calculator

Find out how much house you can afford from your income, debts, down payment and mortgage rate using the 28/36 rule.

Amortization Schedule Calculator

Build a full loan amortization schedule with principal, interest and balance for every payment, including extra payments.

Mortgage Refinance Calculator

See your new payment after refinancing, how long it takes to recover closing costs, and lifetime interest saved.

Rent vs Buy Calculator

Compare the long-term cost of buying a home against renting and investing the difference.

Retirement Calculator

Project your 401(k), IRA or pension balance at retirement and the yearly income it could safely provide.

SEO

Search growth and content optimization tools.

Meta Tag Generator

Create SEO-friendly meta tags for your website to improve search ranking.

Sitemap Generator

Generate XML sitemaps for search engines to crawl your site.

Robots.txt Generator

Guide search engine bots on how to crawl your site.

Keyword Density

Analyze your content's keyword frequency and density to avoid stuffing.

Slug Generator

Create SEO-friendly URL slugs for your blog posts and pages.

HTML Minifier

Compress your HTML code to improve page load speed and performance.

URL Encoder/Decoder

Safely encode or decode URLs to ensure proper web formatting.

Word Counter

Count words, characters, and sentences in your text instantly.

Documents

High-demand PDF and office document converters.

All Documents Tools

PDF to Word

Convert PDF files into editable DOCX documents in your browser.

Word to PDF

Turn DOCX files into clean PDF documents with local processing.

PDF to Excel

Extract PDF table content into spreadsheet-friendly Excel files.

PDF to PPT

Convert PDF pages into presentation-ready slide exports.

PDF to JPG

Render PDF pages as downloadable JPG image files.

JPG to PDF

Combine one or more JPG images into a single PDF document.

PDF to Text

Extract readable text from PDF files for copy, export, or reuse.

PDF to HTML

Convert PDF content into basic HTML markup for reuse on the web.

Images

Image format converters and visual file utilities.

All Images Tools

JPG to PNG

Convert JPG images into lossless PNG files in seconds.

PNG to JPG

Convert transparent or flat PNG images into JPG exports.

WebP to PNG

Turn WebP files into widely supported PNG images.

PNG to WebP

Convert PNG images into compressed WebP files for the web.

JPG to WebP

Convert JPG photos into modern WebP images with browser-side processing.

HEIC to JPG

Convert HEIC and HEIF photos into standard JPG files.

BMP to PNG

Turn BMP images into smaller, web-friendly PNG files.

GIF to JPG

Extract a GIF frame into a JPG image you can download.

Data

Structured data converters for modern developer workflows.

JSON to CSV

Transform JSON arrays into CSV rows for spreadsheets and exports.

CSV to JSON

Convert CSV tables into structured JSON arrays directly in the browser.

JSON to XML

Convert JSON objects into XML markup for integrations and exports.

JSON to YAML

Transform JSON data into YAML for config files and dev workflows.

YAML to JSON

Convert YAML input into structured JSON with validation feedback.

CSV to Excel

Convert CSV files into Excel workbooks for spreadsheet workflows.

Excel to JSON

Turn Excel sheets into structured JSON output instantly.

SQL to JSON

Convert SQL-style row data into JSON objects for modern apps.

Developer

Utilities for modern coding workflows.

All Developer Tools

Base64 Converter

Encode or decode plain text as Base64 instantly in your browser.

JSON Formatter

Prettify and validate your JSON data for better readability.

Markdown Previewer

Write and preview Markdown code in real-time.

Password Generator

Generate secure and random passwords for your accounts.

Regex Tester

Validate and test your regular expressions with live highlighting and match results.

SQL Formatter

Format your SQL queries for better structure and clarity.

Text Diff Checker

Compare two pieces of text and find the differences.

Timestamp Converter

Convert between Unix timestamps and human-readable dates in various formats.

Frequently Asked Questions

Everything you need to know about our privacy-first toolkit.

Are these tools really free to use?

Yes. Every tool on ZixoTools is free to use with no subscription, no forced account creation, and no usage wall for normal everyday work.

Are online tools safe for private files and business data?

Most ZixoTools workflows run directly in your browser, which keeps your files, text, and calculations on your device whenever possible. That makes the experience faster and more private.

Do I need to sign up before using calculators, converters, or SEO tools?

No login is required. Open a tool, add your input, and get the result immediately without creating an account.

What kind of tools can I use on ZixoTools?

Finance calculators such as mortgage, loan, savings and salary calculators, SEO tools, developer utilities, PDF and document converters, image tools, and everyday productivity utilities.

Find the right tool in seconds.

Browse All Tools Explore Toolkits

202+ tools live