TOOLKIT

All Tools

SolversPro directory provides 90+ free, client-side online tools and calculators for developers, engineers, and professionals with 100% in-browser processing and zero data collection.

Browse our complete collection of 84+ free tools — all running locally in your browser.

Showing 84 tools

Developer Tools

33

Code Minifier

Instantly minify HTML, CSS, and JavaScript. Remove whitespace, comments, and optimize your code for production.

Markdown to HTML Converter

Convert Markdown text into clean HTML code instantly. Supports GitHub Flavored Markdown (GFM).

URL Slug Generator

Convert any text into a SEO-friendly URL slug. Instantly remove special characters, spaces, and generate clean slugs.

UUID v4 Generator

Generate cryptographically secure UUID v4 identifiers instantly. Bulk generate up to 100 UUIDs at once.

JSON Formatter & Validator

Format, validate, and minify JSON data. Convert nested JSON structures into easy-to-read data tables.

XML Formatter & Validator

Format, validate, and minify XML documents. Parse complex XML into interactive data tables.

Base64 Encoder & Decoder

Quickly encode text to Base64 or decode Base64 back to text.

JWT Token Decoder

Decode and inspect JSON Web Tokens (JWT) payload and header data securely.

Hash Generator

Generate cryptographic hashes like SHA-256, SHA-384, and SHA-512 from any text.

Color Converter

Convert color codes between HEX, RGB, and HSL formats instantly.

Number Base Converter

Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).

Regex Tester & Debugger

Test regular expressions in real-time with live match highlighting, flags, and capture group inspection.

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates or date strings to Unix timestamps instantly.

JSON ↔ CSV Converter

Convert JSON arrays to CSV spreadsheets or CSV data back to JSON. Handles nested objects with dot-notation flattening.

JSON ↔ YAML Converter

Convert between JSON and YAML formats instantly. Perfect for Kubernetes configs, CI/CD pipelines, and API specs.

XML ↔ CSV Converter

Transform XML documents into CSV tables or convert CSV data into structured XML. Great for legacy data migration.

XML ↔ YAML Converter

Convert between XML and YAML formats. Useful for config file migration and cross-platform data exchange.

HTML Escape & Unescape

Escape HTML special characters to entities or unescape entities back to readable HTML. Prevent XSS vulnerabilities.

XML Escape & Unescape

Escape XML special characters or unescape XML entities. Safely embed text in XML documents.

JSON Escape & Unescape

Escape strings for embedding in JSON or unescape JSON-encoded strings back to plain text.

SQL Escape

Escape single quotes, backslashes, and special characters for safe SQL string literals.

CSV Escape

Escape CSV fields per RFC 4180 — properly quote fields containing commas, quotes, and newlines.

JSON to TypeScript

Generate TypeScript interfaces from JSON data. Infers types, handles nested objects, arrays, and optional fields.

JSON to Java

Generate Java POJO classes with getters, setters, and proper type mapping from any JSON structure.

JSON to Python

Generate Python dataclasses with type annotations from JSON. Supports nested structures and lists.

JSON to C#

Generate C# classes with auto-properties and proper .NET type mapping from JSON objects.

JSON to Go

Generate Go structs with json tags from JSON data. Handles nested objects and proper Go naming conventions.

JSON Diff

Compare two JSON objects side by side. Highlights added, removed, and changed keys with color-coded output.

XML Diff

Compare two XML documents with line-by-line diff highlighting. Find differences in structure and content.

Text Diff

Compare two blocks of text with a unified diff view. Highlights additions, deletions, and modifications line by line.

HTML Beautifier

Format and indent messy HTML code with configurable indentation. Makes minified HTML readable instantly.

CSS Beautifier

Format compressed CSS into clean, readable stylesheets. One property per line with proper brace alignment.

JavaScript Beautifier

Format minified JavaScript into readable, properly indented code. Handles braces, semicolons, and nesting.

Finance Tools

7

Live Currency Converter

Convert 160+ world currencies instantly with live mid-market central bank reference exchange rates.

Tip Calculator

Calculate gratuity, custom tip percentages, and split restaurant or service bills evenly.

Compound Interest Calculator

See how your money grows over time with the power of compound interest.

Mortgage Calculator

Calculate monthly mortgage payments, loan amortization schedules, and total interest paid.

ROI Calculator

Calculate return on investment (ROI) percentage and annualized returns for any asset or project.

Cash-on-Cash Return

Evaluate rental property investments by calculating your annual cash return.

Simple Interest Calculator

Calculate simple interest on loans and investments quickly.

Health Tools

3

TDEE Calculator

Calculate your Total Daily Energy Expenditure based on your activity level.

BMI Calculator

Calculate Body Mass Index (BMI) with 6 WHO weight categories and an interactive visual gauge.

Child & Teen BMI Calculator

Calculate pediatric BMI and BMI-for-age percentile (ages 2–19) using official CDC growth chart data.

Math Tools

9

Age Calculator

Calculate your exact age in years, months, days, and discover your next birthday countdown.

Random Number Generator

Generate random numbers within a specific range instantly. Support for multiple numbers, decimals, and custom separators.

Scientific Calculator

Advanced math functions including trig, logarithms, and constants for STEM work.

Quadratic Equation Solver

Find the roots of any quadratic equation with step-by-step solutions.

Matrix Calculator

Perform matrix operations: addition, multiplication, determinant, and inverse.

Percentage Calculator

Calculate percentages, increases, decreases, and percentage of a number.

Geometry Calculator

Calculate area, perimeter, surface area, and volume for 2D and 3D geometric shapes.

Statistics Calculator

Calculate mean, median, mode, variance, standard deviation, and quartiles for datasets.

Unit Converter

Convert between length, weight, temperature, volume, and more.

Network Tools

7

Internet Speed Test

Accurate, real-time internet speed test powered by Cloudflare edge. Measure download, upload, ping, jitter, and bufferbloat.

Network Jitter Test

Measure real-time network jitter, ping stability, min/max latency, standard deviation, and packet loss directly in your browser.

Bufferbloat Test

Test unloaded vs. loaded download and upload latency in your browser and get an A+ to F bufferbloat grade for gaming and VoIP.

IP Subnet Calculator

Calculate network address, broadcast, subnet mask, host range, and usable hosts for any IPv4 subnet using CIDR notation.

My IP Checker

Instantly find your public IP address with location, ISP, timezone, and coordinates.

IP Address Lookup

Look up any public IP address to find its geolocation, ISP, ASN, timezone, and network details.

Internet Radar

Live global dashboard of internet traffic trends, HTTP/3 & IPv6 adoption, DDoS attacks, and connection quality.

QR Code Tools

1

QR Code Generator

Generate QR codes for URLs, text, email, phone numbers, and WiFi. Customize colors and size. Download as PNG.

Security Tools

1

Random Password Generator

Generate cryptographically secure passwords with custom length, character sets, and strength indicator.

Text Tools

6

Number to Words Converter

Convert numbers into English words instantly. Useful for writing checks, filling out forms, or learning English numbers.

Word Counter

Real-time word, character, sentence, and paragraph counter with reading time estimate and keyword density.

Morse Code Translator

Translate text to Morse code and back. Includes audio playback with adjustable speed.

URL Encoder & Decoder

Encode or decode URLs and query strings instantly. Supports encodeURIComponent and encodeURI modes.

Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, PascalCase, kebab-case, and more.

Lorem Ipsum Generator

Generate placeholder Lorem Ipsum text by paragraphs, sentences, or words. Customizable and instant.

Pdf

12

PDF Merger

Drag, reorder, and combine multiple PDF files into a single document instantly.

Split PDF By Range

Extract a specific page range (e.g. pages 3–8) from any PDF file.

Split PDF To Pages

Separate every PDF page into its own individual downloadable file.

Compose PDF

Create a PDF document from scratch using a built-in text editor.

Protect PDF

Add password protection and set read/print/copy permissions on PDFs.

Remove PDF Password

Unlock and remove password protection from a PDF file.

Flatten PDF

Flatten form fields and annotations for universal compatibility.

Preflight PDF

Inspect PDF metadata, page count, dimensions, and structure.

PDF to Text

Extract all readable text from any PDF document.

PDF to Images

Convert each PDF page into a high-quality PNG image file.

PDF to HTML

Convert PDF content into an HTML page you can preview and download.

Images to PDF

Combine multiple JPG/PNG/WebP images into a single PDF file.

Trades Tools

5

Concrete Slab Calculator

Calculate exactly how much concrete you need for slabs, footings, and walls.

Wire Size Calculator

Determine the correct wire gauge for electrical installations.

Solar Panel Calculator

Size your solar array based on energy usage and location.

Board Feet Calculator

Calculate hardwood lumber volume in board feet.

Paint Calculator

Determine exactly how many gallons of paint your project needs.