Free Byte Converter Online

The Byte Converter is a free online tool that converts between digital storage units like bytes, KB, MB, GB, and TB using both binary and decimal systems.

Yes, it is completely free with no registration required. All conversions happen client-side in your browser.

Binary (base-2) uses 1024 as the multiplier (KiB, MiB), while decimal (base-10) uses 1000 (KB, MB). The Byte Converter supports both standards.

Absolutely. The Byte Converter processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Byte Converter is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Byte Converter in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

The Byte Converter uses industry-standard formulas and algorithms to ensure accurate results. However, for critical financial or medical decisions, always consult a qualified professional.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Byte Converter works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

The gap comes from two different counting systems, not a defect or hidden partition. Drive manufacturers advertise capacity in decimal units, where 1 TB equals 1,000,000,000,000 bytes (powers of 1000). Your operating system, however, measures the same space in binary units, where 1 GB is treated as 1,073,741,824 bytes (powers of 1024). Divide that one trillion decimal bytes by the binary value and you get roughly 931 GiB, even though Windows still labels it "GB." No storage actually disappears; the two standards simply describe identical bytes with different math. This converter shows both columns side by side, so you can type 1 TB in decimal and instantly read off the binary equivalent your file manager will display, ending the confusion for good.

A megabyte (MB) and a megabit (Mb) differ by a factor of eight because one byte equals eight bits. Storage capacity is almost always quoted in bytes, so files, drives, and memory use MB, GB, and TB. Network and internet speeds, by contrast, are quoted in bits, so you see Mbps (megabits per second) on broadband plans. That is why a 100 Mbps connection downloads at only about 12.5 MB per second, not 100. Mixing the two is the most common source of confusion when estimating transfer times or comparing a plan to a file size. This converter handles both bits and bytes explicitly, letting you switch units and read the correct equivalent so you never accidentally multiply or divide by eight in your head.

It depends on which standard you mean, which is why this question trips people up. In the decimal (SI) system used by drive makers and networks, 1 GB equals 1,000,000,000 bytes, since each step multiplies by 1,000: a kilobyte is 1,000 bytes, a megabyte is 1,000,000, and a gigabyte is one billion. In the binary (IEC) system used by most operating systems, the correct unit is the gibibyte (GiB), which equals 1,073,741,824 bytes, because each step multiplies by 1,024. The two differ by about seven percent, and the gap widens at terabyte and petabyte scale. Rather than memorizing these long numbers, enter any value here and the tool shows the exact byte count in both standards at once, with adjustable precision.

Transfer time depends on file size and connection speed, but the catch is the unit mismatch: files are measured in bytes while speeds are measured in bits per second. To do it by hand, convert the file to bits (multiply megabytes by eight), then divide by your speed in megabits per second. A 4 GB movie over a 100 Mbps line, for example, takes roughly five and a half minutes in ideal conditions, though real throughput is usually lower. This converter's Download Time tab automates that math: enter the file size, choose a speed or a preset such as 3G, 4G LTE, 5G, gigabit fiber, or USB 3.0, and it returns the estimate instantly. Use it before starting a large transfer or backup to know what to expect.

Divide the megabit-per-second figure by eight, because there are eight bits in every byte. So a 100 Mbps connection delivers about 12.5 MB/s, a 50 Mbps line gives roughly 6.25 MB/s, and gigabit fiber at 1,000 Mbps tops out near 125 MB/s in perfect conditions. Internet providers advertise in megabits to make numbers look larger, while your download manager reports progress in megabytes, which is why a speed test and a file transfer seem to disagree. Keep in mind that real-world speeds run below the advertised rate due to overhead, congestion, and Wi-Fi loss. To skip the arithmetic, enter your speed here and switch between bit and byte units, or use the Bandwidth tab to see exactly how much data a sustained speed moves over minutes, hours, or days.