# Volume, Speed and Data Converter

> Free converters for volume (ml to gallons), speed (m/s to knots) and data size (bits to terabytes), in three tabbed mini-converters.

Three converters in one page: volume (milliliters to gallons), speed (m/s to knots) and data size (bits to terabytes). Pick a tab, type an amount, get the answer.

*Interactive tool: enter your values at https://toollantern.win/volume-speed-data-converter/ and results update instantly in your browser.*

## Volume

Milliliters, liters, US gallons, quarts, pints, US cups and US fluid ounces. The gallon here is the **US liquid gallon** (3.78541 L); the imperial gallon (4.54609 L) used in the UK is about 20 percent larger, so check which gallon your recipe or manual means.

## Speed

Meters per second, kilometers per hour, miles per hour, feet per second and knots. One knot is one nautical mile per hour (1.852 km/h), the standard unit in aviation and shipping.

## Data size

Bits, bytes, kilobytes, megabytes, gigabytes and terabytes using **decimal (SI) units**: 1 KB = 1,000 bytes, 1 MB = 1,000,000 bytes. Operating systems often display sizes in binary units (1 KiB = 1,024 bytes), which is why a drive sold as 1 TB shows about 931 GB in Windows.

## Worked examples

**2 US cups** = 473.176 ml. **60 mph** = 96.5606 km/h. **8 GB** = 8,000,000,000 bytes.

## Frequently asked questions
### US gallon or imperial gallon?

The US liquid gallon is 3.78541 liters; the imperial gallon is 4.54609 liters. This converter uses the US gallon, the one in American recipes and fuel economy figures.

### What is a knot?

One nautical mile per hour, or 1.852 km/h. It is the standard speed unit in aviation and maritime navigation.

### Is a kilobyte 1,000 or 1,024 bytes?

Decimal: 1 KB = 1,000 bytes here, following SI and storage-industry convention. Binary KiB (1,024 bytes) is what operating systems often display.

### What is the difference between liters and cups?

Liters, the metric unit used almost everywhere outside the US. Cups and fluid ounces are US customary units common in American recipes.

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Interactive version: https://toollantern.win/volume-speed-data-converter/