---
title: "1,000 gal to m³ = 3.785412 m³"
description: "1,000 US gallons is 3.785412 cubic meters. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/1000-gallons-to-cubic-meters/
site: "At One Place"
---

# 1,000 gal to m³

**1,000 US gallons in cubic meters: 1,000 gal = 3.785412 m³**

m³ = gal × 0.003785411784

1,000 US gallons is 3.785412 cubic meters. To get there, multiply by 0.003785411784.

## Values either side

*US gallons near 1,000, converted to cubic meters.*

| US gallons | Cubic meters |
| --- | --- |
| 350 gal | 1.324894 |
| 400 gal | 1.514165 |
| 500 gal | 1.892706 |
| 750 gal | 2.839059 |
| 1,000 gal ← | 3.785412 |

## How the conversion works

The relationship is m³ = gal × 0.003785411784. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> US gallon: US liquid gallon. The imperial gallon is about 20% larger.

## Common questions

### What is 1,000 gal in cubic meters?

1,000 gal is 3.785412 m³.

### How do you convert US gallons to cubic meters?

Multiply by 0.003785411784.

## Related pages

- [US gallons to cubic meters](https://atoneplace.net/convert/gallons-to-cubic-meters/)
- [1,000 m³ to gal](https://atoneplace.net/convert/1000-cubic-meters-to-gallons/)
- [350 gal to m³](https://atoneplace.net/convert/350-gallons-to-cubic-meters/)
- [400 gal to m³](https://atoneplace.net/convert/400-gallons-to-cubic-meters/)
- [500 gal to m³](https://atoneplace.net/convert/500-gallons-to-cubic-meters/)
- [750 gal to m³](https://atoneplace.net/convert/750-gallons-to-cubic-meters/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)