# Gibibytes to Gigabytes (GiB to GB)

> Convert gibibytes to gigabytes: 1 GiB = 1.07374 GB. Exact conversion factor, formula, 18-row table and worked examples, with JSON API and MCP access.

- Page id: `gib-to-gb` · Quantity: Data storage (`data-storage`, base unit B) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/gib-to-gb · This document: https://tttkmbb.com/conversion/gib-to-gb.md · JSON: https://tttkmbb.com/conversion/gib-to-gb.json (add `?value=` for a result)

## Formula

- `1 GiB = 1.07374 GB`
- `gigabytes = gibibytes × 1.073741824`
- Reverse: `gibibytes = gigabytes × 0.9313225746`

The factor follows from the SI definitions of both units (NIST SP 811); values below are rounded to 6 significant figures, the API returns up to 12.

## Worked examples

- 1.5 GiB = 1.61061 GB
- 700 GiB = 751.619 GB
- 2048 GiB = 2199.02 GB

## Conversion table

| Gibibytes (GiB) | Gigabytes (GB) |
| --- | --- |
| 1 | 1.07374 |
| 2 | 2.14748 |
| 4 | 4.29497 |
| 8 | 8.58993 |
| 16 | 17.1799 |
| 32 | 34.3597 |
| 64 | 68.7195 |
| 100 | 107.374 |
| 128 | 137.439 |
| 256 | 274.878 |
| 500 | 536.871 |
| 512 | 549.756 |
| 1000 | 1073.74 |
| 1024 | 1099.51 |
| 2048 | 2199.02 |
| 4096 | 4398.05 |
| 8192 | 8796.09 |
| 10000 | 10737.4 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=1.5&from_unit=GiB&to_unit=GB` → unified JSON envelope with `result.values.result`, `formula`, `factor`, `sources`, `freshness`
- MCP: server `https://tttkmbb.com/mcp`, tool `convert_units` with `{"value":1.5,"from_unit":"GiB","to_unit":"GB"}`
- All data storage units: https://tttkmbb.com/api/v1/units?quantity=data-storage · full converter: [Data Storage Converter](https://tttkmbb.com/conversion/data-storage.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many gigabytes are in one gibibyte?**

1 GiB = 1.07374 GB. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

**What is the formula to convert gibibytes to gigabytes?**

Multiply the value in gibibytes by 1.073741824: gigabytes = gibibytes × 1.073741824. For example, 1.5 GiB = 1.61061 GB.

**How do I convert gigabytes back to gibibytes?**

Multiply by the inverse factor 0.9313225746 (gibibytes = gigabytes × 0.9313225746), or use the gigabytes-to-gibibytes page.

## Related conversions

- [Gigabytes to gibibytes](https://tttkmbb.com/conversion/gb-to-gib.md) (reverse)
- [Megabytes to Gigabytes](https://tttkmbb.com/conversion/mb-to-gb.md)
- [Gigabytes to Megabytes](https://tttkmbb.com/conversion/gb-to-mb.md)
- [Gigabytes to Terabytes](https://tttkmbb.com/conversion/gb-to-tb.md)
- [Terabytes to Gigabytes](https://tttkmbb.com/conversion/tb-to-gb.md)
- [Kilobytes to Megabytes](https://tttkmbb.com/conversion/kb-to-mb.md)
- [Megabytes to Kilobytes](https://tttkmbb.com/conversion/mb-to-kb.md)
- [Mebibytes to Megabytes](https://tttkmbb.com/conversion/mib-to-mb.md)
- [Megabytes to Mebibytes](https://tttkmbb.com/conversion/mb-to-mib.md)

## Data Sources

- NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors — https://www.nist.gov/pml/special-publication-811 (standard, retrieved 2026-09-24)
- BIPM – The International System of Units (SI Brochure, 9th edition) — https://www.bipm.org/en/publications/si-brochure (standard, retrieved 2026-09-24)
- Wikipedia – Conversion of units — https://en.wikipedia.org/wiki/Conversion_of_units (reference, retrieved 2026-09-24)