1 GB = 1,000 MB
Gigabytes (GB) to Megabytes (MB) Converter
The Gigabytes (GB) to Megabytes (MB) Converter turns your Gigabyte (GB) value into Megabytes (MB). Type your storage value below — 1 GB = 1,000 MB, calculated across both decimal (SI) and binary (IEC) standards. This free gigabyte to megabyte calculator doubles as a digital storage converter, file size converter, and data capacity calculator for accurate unit conversion. Also see: Bytes to Petabytes.
Gigabyte (GB)
A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use.
View the gigabyte data unit pageMegabyte (MB)
A megabyte is 1,000 kilobytes or 1,000,000 bytes using the SI decimal standard.
View the megabyte data unit pageHow to Convert Gigabytes to Megabytes
To convert gigabytes to megabytes, multiply by 1,000 (using SI decimal). Both units measure storage capacity—the difference is scale.
GB: A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use.
MB: A megabyte is 1,000 kilobytes or 1,000,000 bytes using the SI decimal standard. Related: Gigabytes to Pebibytes.
1 GB = 1,000 MB (using SI decimal standard) — which means there are 1,000megabytes in every gigabyte.
GB to MB conversion rate: 1 gigabyte equals 1,000megabytes — the standard gigabyte to megabyte data storage conversion used by this calculator.
Quick Facts: GB to MB Storage Conversion
- Conversion factor: 1 GB = 1,000 MB (SI decimal)
- Reverse factor: 1 MB = 0.001 GB
- Source unit type: SI decimal storage unit
- Target unit type: SI decimal storage unit
- Binary (IEC) factor: 1 GB = 1,024 MB
- Category: data storage converter, digital capacity calculator
Steps to Convert Gigabyte to Megabyte
- Enter your gigabyte value (GB) into the gigabyte to megabyte converter above.
- The equivalent megabytes (MB) value updates instantly using the GB to MB conversion factor.
- Toggle between the SI decimal (÷1000) and binary IEC (÷1024) standards for Windows-style storage capacity results.
- Use the swap control to reverse the calculation and convert megabytes back into gigabytes.
GB to MB Conversion Formula
Here's the exact GB to MB formula in copy-paste-ready form — multiply by 1,000 to go from gigabytes to megabytes, or by 0.001 to reverse it — followed by a quick-reference chart of the same conversion.
// Convert GB to MB
MB = GB × 1,000
// Reverse: Convert MB to GB
GB = MB × 0.001
Gigabyte to Megabyte Conversion Examples
100 GB = 100,000 MB
256 GB = 256,000 MB
500 GB = 500,000 MB
1,000 GB = 1,000,000 MB
2,048 GB = 2,048,000 MB
Binary Standard (Base 1024)
Using binary calculation: 1 GB = 1,024 MB
100 GB = 102,400 MB
1,000 GB = 1,024,000 MB
1,024 GB = 1,048,576 MB
What Is a Gigabyte (GB)? Definition and Uses
A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use.
The gigabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard.
Common uses: Movies, video games, smartphone storage, USB drives, cloud storage plans See also: Gigabytes to Terabits.
1 GB = 8 × 10⁹ bits = 1 × 10⁹ bytes.
The gigabyte can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.
Gigabyte Storage Unit at a Glance
| Unit type | SI decimal |
|---|---|
| Base / standard | Base 1,000 — SI (International System of Units) |
| Symbol | GB |
| Common uses | Movies, video games, smartphone storage, USB drives, cloud storage plans |
What Is a Megabyte (MB)? Definition and Uses
A megabyte is 1,000 kilobytes or 1,000,000 bytes using the SI decimal standard.
The megabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard.
Common uses: MP3 files, high-resolution images, short video clips, software installers
1 MB = 8 × 10⁶ bits = 1 × 10⁶ bytes.
The megabyte can be abbreviated as MB; for example, 1 megabyte can be written as 1 MB.
Megabyte Storage Unit at a Glance
| Unit type | SI decimal |
|---|---|
| Base / standard | Base 1,000 — SI (International System of Units) |
| Symbol | MB |
| Common uses | MP3 files, high-resolution images, short video clips, software installers |
Gigabyte to Megabyte Conversion Table
The table below shows 100 gigabyte measurements converted to megabytes — scroll within the table to see the full range.
| Gigabytes | Megabytes | Megabytes (Binary) |
|---|---|---|
| 1 GB | 1,000 MB | 1,024 MB |
| 13 GB | 13,000 MB | 13,312 MB |
| 26 GB | 26,000 MB | 26,624 MB |
| 39 GB | 39,000 MB | 39,936 MB |
| 52 GB | 52,000 MB | 53,248 MB |
| 65 GB | 65,000 MB | 66,560 MB |
| 78 GB | 78,000 MB | 79,872 MB |
| 91 GB | 91,000 MB | 93,184 MB |
| 104 GB | 104,000 MB | 106,496 MB |
| 117 GB | 117,000 MB | 119,808 MB |
| 130 GB | 130,000 MB | 133,120 MB |
| 143 GB | 143,000 MB | 146,432 MB |
| 156 GB | 156,000 MB | 159,744 MB |
| 169 GB | 169,000 MB | 173,056 MB |
| 182 GB | 182,000 MB | 186,368 MB |
| 195 GB | 195,000 MB | 199,680 MB |
| 208 GB | 208,000 MB | 212,992 MB |
| 221 GB | 221,000 MB | 226,304 MB |
| 234 GB | 234,000 MB | 239,616 MB |
| 247 GB | 247,000 MB | 252,928 MB |
| 260 GB | 260,000 MB | 266,240 MB |
| 273 GB | 273,000 MB | 279,552 MB |
| 286 GB | 286,000 MB | 292,864 MB |
| 299 GB | 299,000 MB | 306,176 MB |
| 312 GB | 312,000 MB | 319,488 MB |
| 325 GB | 325,000 MB | 332,800 MB |
| 338 GB | 338,000 MB | 346,112 MB |
| 351 GB | 351,000 MB | 359,424 MB |
| 364 GB | 364,000 MB | 372,736 MB |
| 377 GB | 377,000 MB | 386,048 MB |
| 390 GB | 390,000 MB | 399,360 MB |
| 403 GB | 403,000 MB | 412,672 MB |
| 416 GB | 416,000 MB | 425,984 MB |
| 429 GB | 429,000 MB | 439,296 MB |
| 442 GB | 442,000 MB | 452,608 MB |
| 455 GB | 455,000 MB | 465,920 MB |
| 468 GB | 468,000 MB | 479,232 MB |
| 481 GB | 481,000 MB | 492,544 MB |
| 494 GB | 494,000 MB | 505,856 MB |
| 507 GB | 507,000 MB | 519,168 MB |
| 520 GB | 520,000 MB | 532,480 MB |
| 533 GB | 533,000 MB | 545,792 MB |
| 546 GB | 546,000 MB | 559,104 MB |
| 559 GB | 559,000 MB | 572,416 MB |
| 572 GB | 572,000 MB | 585,728 MB |
| 585 GB | 585,000 MB | 599,040 MB |
| 598 GB | 598,000 MB | 612,352 MB |
| 611 GB | 611,000 MB | 625,664 MB |
| 624 GB | 624,000 MB | 638,976 MB |
| 637 GB | 637,000 MB | 652,288 MB |
| 650 GB | 650,000 MB | 665,600 MB |
| 663 GB | 663,000 MB | 678,912 MB |
| 676 GB | 676,000 MB | 692,224 MB |
| 689 GB | 689,000 MB | 705,536 MB |
| 702 GB | 702,000 MB | 718,848 MB |
| 715 GB | 715,000 MB | 732,160 MB |
| 728 GB | 728,000 MB | 745,472 MB |
| 741 GB | 741,000 MB | 758,784 MB |
| 754 GB | 754,000 MB | 772,096 MB |
| 767 GB | 767,000 MB | 785,408 MB |
| 780 GB | 780,000 MB | 798,720 MB |
| 793 GB | 793,000 MB | 812,032 MB |
| 806 GB | 806,000 MB | 825,344 MB |
| 819 GB | 819,000 MB | 838,656 MB |
| 832 GB | 832,000 MB | 851,968 MB |
| 845 GB | 845,000 MB | 865,280 MB |
| 858 GB | 858,000 MB | 878,592 MB |
| 871 GB | 871,000 MB | 891,904 MB |
| 884 GB | 884,000 MB | 905,216 MB |
| 897 GB | 897,000 MB | 918,528 MB |
| 910 GB | 910,000 MB | 931,840 MB |
| 923 GB | 923,000 MB | 945,152 MB |
| 936 GB | 936,000 MB | 958,464 MB |
| 949 GB | 949,000 MB | 971,776 MB |
| 962 GB | 962,000 MB | 985,088 MB |
| 975 GB | 975,000 MB | 998,400 MB |
| 988 GB | 988,000 MB | 1,011,712 MB |
| 1,001 GB | 1,001,000 MB | 1,025,024 MB |
| 1,014 GB | 1,014,000 MB | 1,038,336 MB |
| 1,027 GB | 1,027,000 MB | 1,051,648 MB |
| 1,040 GB | 1,040,000 MB | 1,064,960 MB |
| 1,053 GB | 1,053,000 MB | 1,078,272 MB |
| 1,066 GB | 1,066,000 MB | 1,091,584 MB |
| 1,079 GB | 1,079,000 MB | 1,104,896 MB |
| 1,092 GB | 1,092,000 MB | 1,118,208 MB |
| 1,105 GB | 1,105,000 MB | 1,131,520 MB |
| 1,118 GB | 1,118,000 MB | 1,144,832 MB |
| 1,131 GB | 1,131,000 MB | 1,158,144 MB |
| 1,144 GB | 1,144,000 MB | 1,171,456 MB |
| 1,157 GB | 1,157,000 MB | 1,184,768 MB |
| 1,170 GB | 1,170,000 MB | 1,198,080 MB |
| 1,183 GB | 1,183,000 MB | 1,211,392 MB |
| 1,196 GB | 1,196,000 MB | 1,224,704 MB |
| 1,209 GB | 1,209,000 MB | 1,238,016 MB |
| 1,222 GB | 1,222,000 MB | 1,251,328 MB |
| 1,235 GB | 1,235,000 MB | 1,264,640 MB |
| 1,248 GB | 1,248,000 MB | 1,277,952 MB |
| 1,261 GB | 1,261,000 MB | 1,291,264 MB |
| 1,274 GB | 1,274,000 MB | 1,304,576 MB |
| 1,287 GB | 1,287,000 MB | 1,317,888 MB |
SI Decimal vs Binary: Why Two Different Standards?
When converting gigabytes to megabytes, different tools may give slightly different results. This is because there are two competing standards for measuring digital storage:
| Standard | Base | 1 KB equals | Used By |
|---|---|---|---|
| SI Decimal | 1000 | 1,000 bytes | Hard drive manufacturers, macOS, network speeds |
| Binary (IEC) | 1024 | 1,024 bytes | Windows, Linux (partially), RAM specifications |
Note: Our calculator defaults to SI decimal (base 1000) to match the box label. To match Windows, toggle the standard above the converter.
Want to skip the ambiguity entirely? Gibibyte (GiB) and Mebibyte (MiB) are the IEC binary-only siblings of gigabyte and megabyte — always base 1,024, no dual-standard guessing. See the GiB to MiB converter.
FAQs: Gigabyte to Megabyte Conversion
How many megabytes are in 1 gigabyte?
1 Gigabyte (GB) equals 1,000 Megabytes using the SI decimal standard, or 1,024 MB using the binary (IEC) standard.
How do I convert gigabytes to megabytes?
Multiply the gigabyte value by 1,000 to get megabytes. For example, 10 GB = 10,000 MB.
Is a gigabyte bigger than a megabyte?
Yes. 1 GB = 1,000 MB, so the gigabyte is the larger data storage unit.
What is Gigabyte (GB) commonly used for?
Movies, video games, smartphone storage, USB drives, cloud storage plans.