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Tech Tools & Calculators

100 free online tech tools — text utilities, developer tools, SEO checkers, calculators, security tools, color pickers, converters, encoders, random generators and more. No sign-up required.

100Free Tools

12Categories

0Sign-up Needed

FreeAlways

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Text & Writing Tools

10 tools

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Text Compare (Diff Checker)

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Text to Slug Generator

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Random Text Generator

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Remove Duplicate Lines

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Text to List Converter

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SEO & Website Tools

10 tools

Meta Tag Generator

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Robots.txt Generator

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Sitemap Generator

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Keyword Density Checker

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SERP Snippet Preview Tool

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Developer Tools

10 tools

JSON Formatter

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JSON Validator

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Base64 Encoder / Decoder

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URL Encoder / Decoder

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HTML to Markdown Converter

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Markdown to HTML Converter

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Converter Tools

10 tools

Binary to Decimal Converter

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Decimal to Binary Converter

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Binary to Text Converter

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Text to ASCII Converter

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ASCII to Text Converter

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HEX to RGB Converter

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RGB to HEX Converter

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Celsius to Fahrenheit

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Fahrenheit to Celsius

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MB to GB Converter

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Calculator Tools

10 tools

Percentage Calculator

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Age Calculator

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Time Duration Calculator

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Date Difference Calculator

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GPA Calculator

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Scientific Calculator

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Average Calculator

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Ratio Calculator

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Discount Calculator

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Profit Margin Calculator

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Internet & Networking Tools

10 tools

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HTTP Status Code Checker

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User Agent Parser

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Internet Speed Calculator

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Security Tools

10 tools

Password Generator

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Password Strength Checker

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Random String Generator

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Random Password Generator

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Secure Token Generator

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Encryption / Decryption Tool

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Image Tools

10 tools

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Image to Base64 Converter

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Base64 to Image Converter

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Image Pixel Size Checker

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Color Picker from Image

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Color & Design Tools

6 tools

HEX Color Picker

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RGB Color Picker

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Gradient Generator

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Color Palette Generator

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Contrast Checker

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Random Color Generator

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Random Generator Tools

5 tools

Random Number Generator

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Random Name Generator

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Random Password Generator

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Random Letter Generator

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Random Username Generator

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Date & Time Tools

5 tools

Timestamp Converter

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Unix Timestamp Generator

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Time Zone Converter

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Countdown Timer Generator

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Working Days Calculator

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Encoding & Data Tools

4 tools

URL Slug Generator

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Text to Base64 Converter

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Base64 to Text Converter

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Data Size Converter

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Free Tech Tools & Calculators — 100 Online Developer & Utility Tools

ToollLive's free tech tools and calculators give developers, designers, marketers, and everyday users access to 100 professional-grade utilities — all in one place, no sign-up required. From a word counter and case converter to a JSON formatter, regex tester, password generator, IP address lookup, and Base64 encoder, our tech toolkit covers every common task instantly in your browser.

Our tools span 12 categories: Text & Writing (word counter, diff checker, slug generator), SEO & Website (meta tag generator, SERP preview, robots.txt), Developer Tools (JSON formatter, URL encoder, HTML/CSS minifier), Converters (binary, hex, RGB, temperature, storage), Calculators (percentage, age, GPA, discount, profit margin), Internet & Networking (IP lookup, DNS checker, SSL checker), Security (SHA256, UUID, hash generators), Image Tools (resizer, compressor, crop, rotate), Color & Design (HEX picker, gradient, contrast checker), Random Generators, Date & Time (timestamp, timezone), and Encoding & Data tools. All free, private, and instant.

Keywords: tech tools online free · word counter · json formatter · password generator · age calculator · base64 encoder · regex tester · ip address lookup · color picker · developer tools free · calculator tools online · ToollLive tech tools.