All Tools
201 tools and counting
BMI Calculator
Calculate your Body Mass Index and see your weight category.
Use Tool → Math & CalculatorsGPA Calculator
Calculate your GPA from course grades and credit hours.
Use Tool → Math & CalculatorsNumber to Words Converter
Spell out any number in plain English words.
Use Tool → Math & CalculatorsScientific Calculator
A full scientific calculator with trigonometry, powers, roots, and factorials.
Use Tool → Math & CalculatorsLCM and GCD Calculator
Find the Least Common Multiple and Greatest Common Divisor of numbers.
Use Tool → Math & CalculatorsRatio Simplifier
Simplify any ratio to its lowest terms.
Use Tool → Math & CalculatorsFactorial Calculator
Calculate the factorial of any non-negative integer.
Use Tool → Math & CalculatorsFraction Calculator
Add, subtract, multiply, or divide two fractions.
Use Tool → Math & CalculatorsLinear Equation Solver
Solve equations in the form ax + b = c for x.
Use Tool → Math & CalculatorsPermutation and Combination Calculator
Calculate nPr and nCr for any n and r.
Use Tool → Math & CalculatorsQuadratic Equation Solver
Solve equations of the form ax² + bx + c = 0.
Use Tool → Math & CalculatorsStandard Deviation Calculator
Calculate mean, variance, and standard deviation for a data set.
Use Tool → Math & CalculatorsBinary Calculator
Add, subtract, multiply, or divide two binary numbers.
Use Tool → Math & CalculatorsDate Difference Calculator
Calculate the exact difference between two dates.
Use Tool → Math & CalculatorsPrime Number Checker
Check instantly whether a number is prime.
Use Tool → Math & CalculatorsAverage / Median Calculator
Calculate mean, median, mode, and range for a set of numbers.
Use Tool →Fast & Easy
Our tools are built for speed and simplicity. Get results in seconds.
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We respect your privacy. Your data never leaves your browser.
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All our tools are 100% free to use. No hidden charges, ever.
🔥 Popular Tools
View all tools →Merge PDF
Combine multiple PDF files into a single document.
Use Tool → Text ToolsWord Counter
Count words, characters, sentences, and paragraphs instantly.
Use Tool → Finance ToolsInvoice Generator
Create a printable invoice or quotation with a live preview, itemised costs, any currency and tax worked out for you.
Use Tool → Text ToolsJSON Formatter
Format, validate, and beautify JSON data instantly.
Use Tool → Image ToolsBulk Image Compressor
Compress up to 20 images at once and download them all in one ZIP.
Use Tool → PDF ToolsPDF to Word Converter
Convert PDFs to editable Word with OCR and layout preservation
Use Tool → PDF ToolsSplit PDF
Extract a specific page range from a PDF into a new file.
Use Tool → Fun ToolsSurpriseQR
Create a time-locked surprise with a photo, video, or message, and share it as a QR code.
Use Tool → Health & Fitness ToolsSleep Calculator
Find the best time to go to bed or wake up, based on 90-minute sleep cycles.
Use Tool → Image ToolsImage Editor
Crop, rotate, adjust, watermark and cut out - all in one, in your browser.
Use Tool →Google Gemini 4 Argon: New AI Model for Coding, Research and Complex Tasks
Google's Gemini 4 Argon is presented as an advanced AI model designed to assist with complex coding, scientific research, cybersecurity, legal work and financial analysis. Its capabilities highlight the growing role of AI in automating multi-step tasks and improving professional productivity.
Read article →Latest from the blog
View all posts →Skip the Prompt: Why a Tool Sometimes Beats Asking AI
For small, well-defined tasks the prompt is the slow part. Where a single-purpose tool wins, and where describing what you want is genuinely worth it.
Tool Tips & GuidesThe Hidden Water Cost of Every AI Prompt
Why answering a prompt uses water, what the research actually says about how much, and where a lightweight tool genuinely helps.
Tool Tips & GuidesWhat Is a Readability Score, and Should You Chase One?
The score counts syllables and sentence length rather than clarity. What it genuinely catches, and the three things it cannot see.