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💾 Digital Storage Conversion

KB to GB Converter

Instantly convert kilobytes to gigabytes and back. Uses decimal storage units (1 GB = 1,000,000 KB) — the standard used by storage manufacturers. Enter a value below to convert.

decimal
KB

Whole numbers or decimals. Use a dot as decimal separator.

0.005 GB

Result updates instantly.

decimal

Conversion result

5,000 KB 0.005 GB

Formula

5,000 ÷ 1,000,000 = 0.005

5,000 KB relative scale 0.005 GB

Quick conversions

How storage units relate

Each step up is 1,000× larger in the decimal system. KB is tiny compared to GB — that's why 1 GB holds a million kilobytes.

🔹

Byte

B

📄

Kilobyte

KB · 1,000 B

🖼️

Megabyte

MB · 1,000 KB

💾

Gigabyte

GB · 1,000 MB

🗄️

Terabyte

TB · 1,000 GB

🏢

Petabyte

PB · 1,000 TB

Decimal system: 1 KB = 1,000 bytes · 1 MB = 1,000 KB · 1 GB = 1,000 MB · 1 TB = 1,000 GB · 1 PB = 1,000 TB

KB to GB conversion guide

Converting kilobytes to gigabytes is one of the most common storage calculations — whether you're checking a file size, comparing cloud storage plans, or estimating how many photos fit on a drive. This page gives you an instant KB to GB converter plus the formulas and context you need to understand the result.

What is a kilobyte (KB)?

A kilobyte (KB) is a decimal unit of digital storage equal to 1,000 bytes. It's used for very small files: a short text document, a tiny icon, or a few seconds of low-quality audio. The "kilo" prefix means 1,000 in the International System of Units (SI), so 1 KB = 1,000 bytes exactly.

What is a gigabyte (GB)?

A gigabyte (GB) is equal to 1,000 megabytes, or 1,000,000,000 bytes. It's a familiar unit for phone storage, cloud plans, and video files. For example, a 1080p movie might be 2–4 GB, and a modern smartphone often comes with 128 GB or 256 GB of storage.

How to convert KB to GB (decimal formula)

Because these are decimal units, the conversion is a simple division by one million:

GB = KB ÷ 1,000,000

or equivalently: GB = KB × 0.000001

Example: Convert 5,000 KB to GB.

  • 5,000 ÷ 1,000,000 = 0.005 GB
  • Check: 0.005 GB × 1,000,000 = 5,000 KB ✓

How to convert GB back to KB

To go the other way, multiply by one million:

KB = GB × 1,000,000

Example: 2 GB × 1,000,000 = 2,000,000 KB.

Common KB to GB conversions

Kilobytes (KB) Gigabytes (GB)
1,000 KB0.001 GB
5,000 KB0.005 GB
10,000 KB0.01 GB
100,000 KB0.1 GB
500,000 KB0.5 GB
1,000,000 KB1 GB
5,000,000 KB5 GB
10,000,000 KB10 GB

Decimal vs binary storage units (KB vs KiB)

There are two parallel systems for measuring digital storage, and mixing them up causes most confusion about "missing" storage space.

  • Decimal (SI) units: KB, MB, GB, TB, PB. Based on powers of 1,000. Used by storage manufacturers, network speeds, and this converter.
  • Binary (IEC) units: KiB, MiB, GiB, TiB, PiB. Based on powers of 1,024. Used by some operating systems and software.

The binary equivalents are: 1 KiB = 1,024 bytes, 1 MiB = 1,024 KiB, 1 GiB = 1,024 MiB. Because 1,024 is larger than 1,000, a binary gigabyte (GiB) is actually about 7.4% larger than a decimal gigabyte (GB). That's why a drive labeled "500 GB" may show as roughly "465 GiB" in a tool that uses binary units.

Why operating systems may display storage differently

Windows historically uses binary units but labels them with decimal names (showing "GB" when it really means GiB). macOS and Linux increasingly use decimal units. This inconsistency means the same drive can appear to have different capacities depending on the OS. Additionally, some of a drive's space is reserved for formatting and system files, so the usable capacity is always a bit less than the advertised number.

This converter uses strict decimal units to match how storage is advertised and sold: 1 KB = 1,000 bytes and 1 GB = 1,000,000 KB. We never mix decimal and binary math, so your results stay consistent and predictable.

Practical examples

  • A 3 MB photo is about 3,000 KB — only 0.003 GB.
  • A 700 MB CD holds roughly 700,000 KB, or 0.7 GB.
  • A 1 TB drive is 1,000,000,000 KB — one billion kilobytes.
  • 1 GB of data = 1,000,000 KB, which is about 1,000 average web pages or a few hundred photos.

Frequently asked questions

Quick answers about KB, GB, and storage conversion.

How many KB are in a GB?
In decimal units, 1 GB = 1,000,000 KB (one million kilobytes). This is because 1 GB = 1,000 MB, and 1 MB = 1,000 KB, so 1,000 × 1,000 = 1,000,000.
How do I convert 1000 KB to GB?
Divide by 1,000,000: 1,000 ÷ 1,000,000 = 0.001 GB. You can verify this with the converter above by entering 1000 and selecting KB → GB.
How many GB is 5000 KB?
5,000 KB ÷ 1,000,000 = 0.005 GB. That's five thousandths of a gigabyte — a very small fraction.
What is the difference between KB and KiB?
KB (kilobyte) is a decimal unit = 1,000 bytes. KiB (kibibyte) is a binary unit = 1,024 bytes. KiB is used in binary-based systems (IEC standard), while KB is used for storage marketing and SI-based contexts. They are not interchangeable.
Why does my 1 TB drive show less than 1 TB of space?
Manufacturers use decimal units (1 TB = 1,000 GB), but many operating systems report using binary units (TiB) while labeling them as "TB." Since 1 TiB = 1,024 GiB, a 1 TB drive appears as about 931 GiB (often shown as "931 GB"). Some space is also reserved for formatting.
How do I convert GB to KB?
Multiply the number of GB by 1,000,000. For example, 2 GB × 1,000,000 = 2,000,000 KB. You can also use the swap button in the converter above to reverse the direction instantly.
Is this converter accurate for all storage types?
Yes — for decimal storage units. This tool converts strictly between bytes, KB, MB, GB, TB, and PB using powers of 1,000. It does not convert to binary units like KiB, MiB, or GiB, which follow different math.
Can I use this KB to GB converter on mobile?
Absolutely. The converter is fully responsive and works on phones, tablets, and desktops. The unit cards, input, and buttons all adapt to smaller screens, and the result updates in real time as you type.