Quick unit conversions in your browser
Whether you're debugging code, writing a thesis, or just wondering if 100 degrees Fahrenheit is warm or cold, unit conversions come up constantly. Rather than switching between browser tabs or reaching for a calculator app, having a quick conversion tool in your browser can save minutes of friction each day. Better still: if the tool runs entirely in your browser and never sends your data anywhere, you can use it offline, on public WiFi, or anywhere without worrying about privacy.
Temperature conversions: Celsius, Fahrenheit, and Kelvin
The most common conversion is temperature. If you work with international data, follow weather from other countries, or deal with scientific measurements, you need to move fluidly between Celsius (°C), Fahrenheit (°F), and Kelvin (K). The temperature converter handles all three in real time: paste a value, select its starting unit, and see the other two instantly.
No more mental math or searching for formulas. Paste 98.6 and instantly see both 37°C and 371.75 K. The tool updates as you type, so experimentation takes seconds. Whether you're comparing weather reports across countries or working with scientific data that mixes units, having the answer before you finish typing removes cognitive load.
Data size conversions: bytes, kilobytes, megabytes, and beyond
Developers and IT professionals live with data size units. A file is 2,500 KB but you need to know if it's roughly 2.4 MB. A database backup is 5 GiB and you're wondering if it fits on your 50 GB cloud storage. Conversions between bytes, kilobytes, megabytes, gigabytes, and terabytes happen daily. The byte unit converter handles all of them instantly, including the distinction between decimal (1,000) and binary (1,024) definitions, which matters in technical contexts.
Paste a size in any unit and see it in all others. No more guessing or using approximate mental math that leaves you unsure whether that file actually fits. This is especially useful when comparing cloud storage plans that advertise in gigabytes while your actual files are measured by your OS in gibibytes.
CSS units: pixels, rems, ems, and viewport units
Frontend developers convert CSS units constantly. A design comp comes in pixels but your codebase uses rem units for accessibility and scalability. You're trying to figure out what 1.5 rem becomes in pixels at a 16 px base size, or how 5 vw translates to pixels on different screen widths. These conversions matter because they affect how your design scales across devices and responsive breakpoints. The CSS unit converter covers px, rem, em, vh, vw, and more, with explicit base-size settings so you control the context.
Stop doing the math by hand or maintaining a sticky note of conversion factors. Plug in a size, pick your base font size, and see the result in every common CSS unit. This is invaluable when working from a Figma design into responsive CSS.
Decimals to fractions: for recipes, measurements, and math
Not every conversion is about bytes or degrees. If you're scaling a recipe from 0.75 servings to whole numbers, or helping a student understand that 0.333 repeating is really one-third, decimal-to-fraction conversion matters. The fraction converter turns decimals into their simplified fraction equivalents, making them more readable and easier to work with in contexts where fractions are standard.
Enter 0.75 and see it becomes 3/4. Enter 0.125 and get 1/8. The simplification happens automatically, and you see both the exact fraction and its decimal representation, so you never lose precision or context when moving between notations.
All conversions are private and work offline
Every tool on TextArray runs entirely in your browser. Your input never leaves your device—there's no server processing, no API call, no login, no tracking. Close the browser tab and the data is gone. This matters whether you're converting sensitive measurements, testing in environments without reliable internet, or simply preferring not to send data to third-party services. The tool works offline after you've loaded it once, because there's nothing to load from the server except the page itself.
Bookmark and use daily
Bookmark your converter of choice in your browser or home screen. No registration, no ads, no obstacles. The next time you need a quick unit conversion, you're one click away instead of searching Google or doing mental math. Combined, these tools eliminate dozens of small friction points that add up across a work day or study session.