Free Online Calculators
And Web Tools

Scientific Calculator

Perform advanced mathematical calculations with ease.

Percentage Calculator

Calculate percentages, increases, decreases and more.

BMI Calculator

Calculate your Body Mass Index and check your health.

Mortgage Calculator

Calculate monthly payments and mortgage affordability.

Compound Interest

See how your savings and investments grow over time.

GPA Calculator

Calculate GPA and track your academic performance.

Fraction Calculator

Add, subtract, multiply and divide fractions easily.

Average Calculator

Find the average of numbers in seconds.

Grade Calculator

Calculate your grade and track your scores.

Binary Converter

Binary to decimal, hex, octal and text, both ways.

Hex Converter

Hexadecimal to decimal, binary and text instantly.

MM to Inches

Millimeters to inches with ruler fractions.

CM to Inches

Centimeters to inches, feet and fractions.

Tip Calculator

Tip, total and per-person split in seconds.

Slope Calculator

Slope, equation and angle from two points.

Volume Calculator

Six shapes with formulas and surface area.

Cylinder Volume

V = πr²h with litres and surface area.

Cone Volume

V = ⅓πr²h with slant height and surfaces.

Proportion Calculator

Solve A/B = C/D and find the missing value.

Random Numbers

Unbiased draws for numbers, names and lottery lines.

Age Calculator

Exact age in years, months and days.

Loan Calculator

Monthly payment, total interest and payoff date.

Statistics

Mean, median, mode, SD, quartiles and outliers.

Pregnancy

Due date, weeks along and every milestone.

Investment

Project savings with regular contributions.

Car Payment

Real monthly payment with trade-in, tax and fees.

Concrete

Cubic yards, bags and weight for any pour.

Dice Roller

Roll real 3D dice from d4 to d100.

Area Calculator

Area and perimeter for twelve shapes.

Calorie Calculator

Daily calories to maintain, lose or gain weight.

Pythagorean Theorem

Solve any missing side of a right triangle.

Ratio Calculator

Simplify, scale, share out and aspect ratios.

Distance

Between two points, in 3D, or on Earth.

Ovulation

Your fertile window and ovulation day.

401(k) Calculator

Projected retirement balance, match included.

Rent vs Buy

The year buying finally beats renting.

Online Notepad

Distraction-free notes with autosave and word count.

RGB Color Codes

Pick colors and get RGB, HEX and HSL codes instantly.

ASCII Table

Searchable ASCII reference with dec, hex and binary.

HTML Editor

Write HTML with a live preview that updates as you type.

CSS Beautifier

Format messy CSS with clean indentation instantly.

CSS Minifier

Compress CSS to shrink file size for faster pages.

JS Minifier

Minify JavaScript safely (ASI-safe), right in your browser.

JS Beautifier

Format minified JavaScript into clean, readable code.

Word to HTML

Paste Word text and get clean HTML, or convert back.

Word to PDF

Turn .docx files into selectable-text PDFs in seconds.

PDF to Word

Turn PDFs into editable Word files without uploading them.

Ping Test

Check any site's latency, jitter and packet loss live.