Unit Converter
Instantly convert between length, weight, temperature, volume, area, speed, and data storage units.
All conversions run locally in your browser — no data is sent anywhere. Data storage units use binary (1024-based) prefixes.
About This Unit Converter
This free online unit converter handles seven major categories — length, weight, temperature, volume, area, speed, and data storage — giving you instant, accurate results as you type. There's no need to sign up or install anything. All calculations run entirely inside your browser.
Temperature conversions use the correct offset formulas (not simple multiplication), so Celsius ↔ Fahrenheit ↔ Kelvin are always accurate. Data storage units follow the binary standard: 1 KB = 1024 bytes, 1 MB = 1024 KB, and so on.
How do I convert Celsius to Fahrenheit?
Select the Temperature category, choose °C as the From unit and °F as the To unit, then type your Celsius value. The formula °F = (°C × 9/5) + 32 is applied automatically. For example, 100 °C = 212 °F.
Are the data storage units binary or decimal?
Binary (IEC standard): 1 KB = 1024 B, 1 MB = 1,048,576 B, 1 GB = 1,073,741,824 B. This matches how operating systems report file sizes. The info banner on the tool reminds you of this.
Can I enter negative values?
Yes — negative temperatures (e.g., −40 °C) are perfectly valid. For other categories (length, weight, etc.) the tool will still perform the conversion but display a warning, since most physical quantities cannot be negative.
How many decimal places can I choose?
The Decimal places selector offers 0–6 decimal places. The default is 4, which balances precision and readability for most conversions. For scientific work choose 6; for rough estimates choose 0 or 1.
What does the formula line show?
The formula line displays the unit-to-unit relationship, for example 1 km = 0.6214 mi. It updates whenever you change the units, giving you a quick reference factor even before you type a value.
Does this tool work offline?
Yes. Once the page is loaded, all conversion logic runs inside your browser with no network requests. You can save the page and use it without an internet connection.
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