Paper Size Converter - Online A4, Letter, Legal Dimensions
See exact mm and inch dimensions of ISO A-series and US paper sizes. Visual comparison tool. Also calculates weight based on GSM and dimensions.
UD5 Toolkit
Instantly convert text between snake_case, camelCase, kebab-case, PascalCase and more
Click any Copy button
or use Copy All above
my_variable_name). It's also common in Ruby and SQL database column names. The style improves readability for multi-word identifiers without relying on capitalization.myVariableName). It's standard in JavaScript and Java for variables and methods. PascalCase capitalizes every word including the first (e.g., MyClassName). PascalCase is typically used for class names in most object-oriented languages like Java, C#, and Python (PEP 8 for classes).background-color, my-page-url). It's the standard in CSS property names and is widely preferred in URLs because search engines like Google treat hyphens as word separators, boosting SEO. Underscores in URLs are not treated as separators by search engines, making kebab-case the preferred choice for web addresses and SEO-friendly slugs.MAX_TIMEOUT_SECONDS). It is universally used for constants in programming — values that should not change during execution. Languages like Python, Java, C++, and JavaScript all conventionally use this format for constant declarations and environment variables.helloWorld_example or even inconsistently formatted text and get clean, consistent output in all target formats.com.example.app), and object property access in programming. path/case is used for file system paths, URLs segments, and routing patterns. Both follow similar word-separation principles but use different separators suited to their specific contexts.aLtErNaTiNg) alternates between lowercase and uppercase letters. While primarily used in internet memes and informal communication to convey sarcasm or mockery, it also serves as a simple text obfuscation technique. Some developers use it for testing case sensitivity in applications or creating visually distinctive placeholder text.See exact mm and inch dimensions of ISO A-series and US paper sizes. Visual comparison tool. Also calculates weight based on GSM and dimensions.
Measure a ring's inside diameter or circumference and convert to US, UK, European, and Japanese sizes.
Convert across length, mass, speed, temperature, data, and more. Search any unit and type. Compact and fast.
Convert between digital storage units: bits, bytes, kilobytes, megabytes, gigabytes, and more. Binary and decimal interpretations available. A developer must-have.
Convert between currencies using manually updated or default rates. Great for estimation when offline. Local settings.
Find the currency code (USD, EUR, JPY) for any country or reverse‑lookup the country from a code. Static reference.
Convert annual salary to effective hourly rate considering holidays, vacation, and work hours per week.
Enter an original pan size and find an alternative pan with the same batter volume. Never overflow or underfill.
Convert any English text to Pig Latin. Simple word play. Works offline.
Enter two premises and a conclusion (All A are B, Some C are not B, etc.) to check validity using Venn diagram rules.
Convert currencies using a built‑in table of approximate fixed rates. Useful for quick estimates without live data. Local.
Select tuning, scale length, and string gauge to calculate total tension on the neck. Build custom string sets.
Calculate the area of an irregular polygon by entering its vertex coordinates. Uses the shoelace formula. Pure math.
Type a number and see its full English word representation (e.g., 123 → one hundred twenty‑three). Supports large numbers.
Calculate output voltage from a two-resistor voltage divider. Enter input voltage and resistances to see Vout. Includes circuit schematic. No data sent.
Convert band and cup sizes between US, UK, European, French, and Australian systems. Accurate shopping abroad.
Select two birth year animals to see a fun compatibility rating and description. Pure cultural entertainment.
Check if your A/B test results are statistically significant using chi-squared test. Enter visitors & conversions for control/variant. Results in plain English.
Convert a numeric amount into English words, perfect for writing checks or legal documents. Supports USD/GBP styles.
Convert any text to a long string of binary digits. Perfect for learning binary representation. Local conversion.
Enter mold dimensions or water weight to get total resin needed, including Part A and B.
Change the sample rate of an audio file (e.g., 48kHz to 44.1kHz) without leaving the browser. Ideal for podcast prep.
Type a mathematical expression like 'sqrt(16)+sin(pi/2)' and get the result instantly. Supports popular functions. Local.
Translate hexadecimal numbers to decimal integers. Instantly see the magnitude. A simple, private utility for developers and mathematicians.
Enter your sander model or hole count to find compatible hook‑and‑loop discs. Stop buying the wrong sandpaper.
Type notes and convert them into a realistic handwriting image with varied pen styles, ink colors, and paper backgrounds. Perfect for study notes.
Approximate conversion from eyeglass prescription to contact lens power. Uses vertex distance formula. For educational purposes only, consult your optometrist.
Calculate how much resin part A and part B to measure for a given total volume. Common ratios (2:1, 1:1). Avoid sticky failures. Local.
Convert between nautical miles, statute miles, kilometers, and knots to mph/kmh. Essential for navigation.
Random shapes appear; compute the area mentally. Multiple choice. For middle schoolers.