How many gigabytes in 1 MB?
1 MB = 0.001 GB. The other way round: 1 GB = 1,000 MB. In decimal (SI) terms 1 megabyte is 1,000,000 bytes. Windows still reports binary sizes (1 MiB = 1,048,576 bytes) while labelling them MB. One gigabyte is 1,000 MB (10⁹ bytes) in the decimal sense used by drive makers and mobile carriers; a binary gibibyte (GiB) is 1,073,741,824 bytes.
Megabytes to gigabytes conversion table
100 MB = 0.1 GB · 200 MB = 0.2 GB · 300 MB = 0.3 GB · 400 MB = 0.4 GB · 500 MB = 0.5 GB · 600 MB = 0.6 GB · 700 MB = 0.7 GB · 800 MB = 0.8 GB · 900 MB = 0.9 GB · 1,000 MB = 1 GB · 1,200 MB = 1.2 GB · 1,500 MB = 1.5 GB · 2,000 MB = 2 GB · 2,500 MB = 2.5 GB · 3,000 MB = 3 GB · 4,000 MB = 4 GB · 5,000 MB = 5 GB · 7,500 MB = 7.5 GB · 10,000 MB = 10 GB · 100,000 MB = 100 GB
How to convert megabytes to gigabytes
Divide the value by 1,000. Example: 3,700 MB = 3.7 GB.
Unit Converter
How to use
- 1Pick a category — length, weight, temperature, volume, area, speed, data, time, pressure or energy.
- 2Choose the “from” and “to” units, or press swap to reverse them.
- 3Type a value in either field — the other side updates as you type.
- 4Adjust the decimal precision and check the conversion table for common values.
Exact conversion factors
Many imperial units are defined exactly in metric terms: 1 inch = 2.54 cm, 1 foot = 0.3048 m, 1 mile = 1.609344 km, 1 pound = 0.45359237 kg and 1 US gallon = 3.785411784 litres. The converter uses these definitions, so results are as precise as the decimals you choose to show. The formula is displayed in words — for example “multiply by 2.54” — so you can repeat the calculation by hand.
Temperature is different
Celsius, Fahrenheit and Kelvin do not share a zero point, so temperature cannot be converted with a single factor. °F = °C × 9/5 + 32 and °C = (°F − 32) × 5/9; Kelvin is Celsius + 273.15. That is why 0 °C is 32 °F, while a 10-degree change in Celsius is an 18-degree change in Fahrenheit.
US vs UK units and data sizes
A US gallon (3.785 L) is smaller than an imperial UK gallon (4.546 L), and US fluid ounces differ slightly from UK ones — check which system your recipe or spec uses. For data sizes, storage makers use decimal units (1 GB = 1,000 MB), while operating systems often count in binary units (1 GiB = 1,024 MiB), which is why a new drive shows less capacity than the label.
Frequently asked questions
How many centimetres are in an inch?
Exactly 2.54 cm. To convert cm to inches, divide by 2.54.
How do I convert kg to pounds?
Multiply kilograms by about 2.20462. One pound is exactly 0.45359237 kg.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example, 20 °C × 1.8 + 32 = 68 °F.
Can I convert in both directions?
Yes. Type in either field and the other updates, or press swap to switch the units.
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