---
title: "US quarts to US gallons — qt to gal converter"
description: "1 US quart = 0.25 US gallons. Convert US quarts to US gallons with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/quarts-to-gallons/
site: "At One Place"
---

# US quarts to US gallons

**1 US quart in US gallons: 1 qt = 0.25 gal**

gal = qt × 1/4

To convert US quarts to US gallons, multiply by 0.25. The table below gives the values people look up most often, and the converter works for any number.

## US quarts to US gallons table

*Common US quart values converted to US gallons.*

| US quarts | US gallons |
| --- | --- |
| 1 qt | 0.25 |
| 2 qt | 0.5 |
| 3 qt | 0.75 |
| 4 qt | 1 |
| 5 qt | 1.25 |
| 10 qt | 2.5 |
| 15 qt | 3.75 |
| 20 qt | 5 |
| 25 qt | 6.25 |
| 30 qt | 7.5 |
| 40 qt | 10 |
| 50 qt | 12.5 |
| 75 qt | 18.75 |
| 100 qt | 25 |
| 250 qt | 62.5 |
| 500 qt | 125 |
| 1,000 qt | 250 |

## How the conversion works

The relationship is gal = qt × 1/4. 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

### How many US gallons are in one US quart?

One US quart equals 0.25 US gallons. gal = qt × 1/4.

### How do you convert US quarts to US gallons?

Use gal = qt × 1/4. So 10 qt is 2.5 gal.

### How many US quarts are in one US gallon?

One US gallon equals 4 US quarts, which is the reverse of the conversion above.

### Is there more than one kind of US gallon?

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

## Related pages

- [US gallons to US quarts](https://atoneplace.net/convert/gallons-to-quarts/)
- [US quarts to Liters](https://atoneplace.net/convert/quarts-to-liters/)
- [US quarts to Milliliters](https://atoneplace.net/convert/quarts-to-ml/)
- [US quarts to Cubic meters](https://atoneplace.net/convert/quarts-to-cubic-meters/)
- [US quarts to US pints](https://atoneplace.net/convert/quarts-to-pints/)
- [US quarts to US cups](https://atoneplace.net/convert/quarts-to-cups/)
- [US quarts to US fluid ounces](https://atoneplace.net/convert/quarts-to-fl-oz/)
- [US quarts to Tablespoons](https://atoneplace.net/convert/quarts-to-tablespoons/)
- [US quarts to Teaspoons](https://atoneplace.net/convert/quarts-to-teaspoons/)

## 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/)