UNIT CONVERTER
Convert between 100+ units across length, weight, temperature, volume, speed, area, and data. Instant, no rounding surprises.
// FAQ
FREQUENTLY ASKED QUESTIONS
Q1.Which unit categories does this converter support?
The converter covers seven categories: Length (mm to nautical miles), Weight (mg to metric tons and short tons), Temperature (°C, °F, Kelvin), Volume (ml to US gallons), Speed (m/s to knots), Area (mm² to hectares), and Data storage (Bytes to Petabytes). Each category includes the most common metric and imperial units.
Q2.How accurate are the conversions?
All conversions use industry-standard factors stored to full IEEE-754 double precision (up to 15–17 significant figures). Results are displayed to up to 10 significant figures with trailing zeros stripped. For extreme values (very large or very small), scientific notation is used automatically.
Q3.Why does the Data converter use 1024 instead of 1000?
This converter uses the binary (IEC) definition: 1 KB = 1024 B, 1 MB = 1024 KB, and so on. This matches how operating systems (Windows, macOS, Linux) report file and drive sizes. Some storage manufacturers use the decimal definition (1 KB = 1000 B) to make drives appear larger — that's why a "500 GB" drive shows as ~465 GiB in your OS.
Q4.How does temperature conversion differ from other unit types?
Length, weight, and most other units convert via a simple multiplication factor. Temperature scales use offset formulas: °F = (°C × 9/5) + 32 and K = °C + 273.15. This means you cannot simply multiply to convert temperatures — zero degrees in each scale represents a different physical point.
Q5.What does the Swap button do?
The ⇄ Swap button reverses the FROM and TO units and also converts the current result back into the input field. For example, if you typed "100 km = 62.137 mi" and click Swap, it sets the input to 62.137 mi and shows the result as 100 km — useful for verifying conversions in both directions.
Q6.Are conversions performed on a server?
No. All unit conversion logic runs entirely in your browser using JavaScript. No data is sent to any server. The tool works offline after the page has loaded.
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// FAQ
FREQUENTLY ASKED QUESTIONS
Q1.Which unit categories does this converter support?
The converter covers seven categories: Length (mm to nautical miles), Weight (mg to metric tons and short tons), Temperature (°C, °F, Kelvin), Volume (ml to US gallons), Speed (m/s to knots), Area (mm² to hectares), and Data storage (Bytes to Petabytes). Each category includes the most common metric and imperial units.
Q2.How accurate are the conversions?
All conversions use industry-standard factors stored to full IEEE-754 double precision (up to 15–17 significant figures). Results are displayed to up to 10 significant figures with trailing zeros stripped. For extreme values (very large or very small), scientific notation is used automatically.
Q3.Why does the Data converter use 1024 instead of 1000?
This converter uses the binary (IEC) definition: 1 KB = 1024 B, 1 MB = 1024 KB, and so on. This matches how operating systems (Windows, macOS, Linux) report file and drive sizes. Some storage manufacturers use the decimal definition (1 KB = 1000 B) to make drives appear larger — that's why a "500 GB" drive shows as ~465 GiB in your OS.
Q4.How does temperature conversion differ from other unit types?
Length, weight, and most other units convert via a simple multiplication factor. Temperature scales use offset formulas: °F = (°C × 9/5) + 32 and K = °C + 273.15. This means you cannot simply multiply to convert temperatures — zero degrees in each scale represents a different physical point.
Q5.What does the Swap button do?
The ⇄ Swap button reverses the FROM and TO units and also converts the current result back into the input field. For example, if you typed "100 km = 62.137 mi" and click Swap, it sets the input to 62.137 mi and shows the result as 100 km — useful for verifying conversions in both directions.
Q6.Are conversions performed on a server?
No. All unit conversion logic runs entirely in your browser using JavaScript. No data is sent to any server. The tool works offline after the page has loaded.
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