Instantly convert any digital storage value between SI decimal, IEC binary, and bit-based units.
A byte converter lets you switch instantly between the many units used to measure digital storage and data transfer — from individual bytes through kilobytes, megabytes, gigabytes, and terabytes, all the way up to petabytes, as well as IEC binary units such as kibibytes and mebibytes, and bit-based units like megabits and gigabits.
In the US, storage and networking products use two different systems: hard-drive makers label capacity in SI gigabytes (1 GB = 1,000,000,000 B) while Windows Explorer reports it in binary gibibytes (1 GiB = 1,073,741,824 B). Internet service providers advertise speeds in megabits per second (Mbit/s), but download managers display progress in megabytes per second (MB/s). Keeping these distinctions straight saves confusion on billing, storage planning, and network benchmarking.
All conversions pass through bytes as the pivot unit: first multiply the source value by its byte-equivalent factor, then divide by the target unit's factor.
where f is the number of bytes per unit. For example, 1 MB = 1,000,000 B and 1 MiB = 1,048,576 B.
Amazon S3 charges per GB stored per month. At scale, a company archiving 500 TB of data is actually archiving 500,000 GB (SI). Understanding that 1 TB = 1,000 GB vs. 1 TiB = 1,024 GiB is important when budgeting cloud storage costs and comparing provider quotes.
A fresh Windows 11 installation requires approximately 64 GB of disk space as reported by the installer (SI gigabytes). The actual on-disk footprint displayed by Windows File Explorer will appear as roughly 59.6 GiB (gibibytes), illustrating how the same data reads differently depending on which unit system your tool uses.
A one-hour Zoom meeting recorded in HD generates approximately 1.5 GB of video file (SI). That equates to about 1.4 GiB or roughly 12 Gbit of raw data. Knowing the file size helps users plan Dropbox or Google Drive storage consumption before enabling cloud recording.
Comcast Xfinity's standard data plan includes 1.2 TB (terabytes, SI) of monthly internet usage. Heavy 4K streaming households can approach this cap quickly: a single 4K Netflix stream consumes roughly 7 GB per hour, so a family of four streaming 8 hours per day would use approximately 1.68 TB per month.
Type any numeric value into the input field at the top of the converter.
Choose the unit your value is expressed in using the dropdown — all 15 units are listed with their symbols.
The five primary result cards update instantly showing bytes, kilobytes, megabytes, gigabytes, and terabytes.
Click 'More storage units' to expand the additional section and see petabytes, kibibytes, mebibytes, gibibytes, tebibytes, pebibytes, bits, kilobits, megabits, and gigabits.
To convert in the opposite direction, simply select a new source unit from the dropdown and enter a new value — results refresh immediately.
1 kB = 1,000 B (SI, used by storage manufacturers and ISPs) vs. 1 KiB = 1,024 B (IEC, used by operating systems). This 2.4% gap compounds significantly at terabyte and petabyte scales.
Divide Mbit/s by 8 to get MB/s. A 1 Gbit/s (gigabit) fiber connection delivers a maximum download speed of 125 MB/s — a useful sanity check on ISP speed-test results.
1 TB = 1,000 GB but Windows shows a 1 TB drive as ~931 GB (actually 931 GiB). The drive is not missing space; the OS is reporting in binary gibibytes while the manufacturer labels in decimal gigabytes.
Cloud providers like AWS, Azure, and Google Cloud all bill in SI units (GB, TB). Confirm which unit system your monitoring tools and dashboards use to avoid unexpectedly large invoices.
1 PB = 1,000 TB. Large US enterprises, government agencies, and streaming platforms routinely manage petabyte-scale data lakes. AWS S3 customers collectively store exabytes of data across the platform.
MB (megabyte) is a SI decimal unit equal to 1,000,000 bytes and is used by hard-drive manufacturers, network equipment, and most operating-system marketers. MiB (mebibyte) is an IEC binary unit equal to 1,048,576 bytes and is what Windows, Linux, and macOS actually report for file and partition sizes. The 4.86% difference between them is why a 500 MB file may appear as 476.84 MiB in your file manager.
Drive manufacturers measure 1 TB as 1,000,000,000,000 bytes (SI). Windows reports capacity in GiB (gibibytes), so it divides by 1,073,741,824 instead of 1,000,000,000. A 1 TB drive therefore shows as about 931.32 GiB. No data is missing; the units differ.
Divide megabits per second (Mbps) by 8 to get megabytes per second (MB/s). A 200 Mbps connection can therefore download at most 25 MB/s. US ISP plans are always marketed in Mbps, while download managers and speed benchmarks typically display MB/s.
One petabyte (PB) equals 1,000 terabytes or one million gigabytes. To put it in perspective: the entire printed collection of the Library of Congress is estimated at about 10 TB — so 1 PB could hold roughly 100 times the Library of Congress. Hyperscale cloud providers like AWS store multiple exabytes (1 EB = 1,000 PB) across their platforms.
Networking hardware transmits data one bit at a time over a physical medium (copper, fiber, radio waves). Measuring throughput in bits per second (bps) directly reflects this physical reality. Storage, by contrast, groups bits into bytes for efficient addressing. The convention of using bits for throughput and bytes for storage is universal across the US networking industry.
Conversion factors follow IEC 80000-13 and the SI Brochure 9th edition. Results are computed in floating-point arithmetic to at least 10 significant figures, which is sufficient for any practical storage planning, cloud budgeting, or network analysis task.
This converter is provided for informational and educational purposes. Byte values and storage capacities may be reported differently across operating systems, hardware manufacturers, and network specifications. For exact sizing in professional or production environments, always verify with official documentation.