---
title: "15 qt to gal = 3.75 gal"
description: "15 US quarts is 3.75 US gallons. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/15-quarts-to-gallons/
site: "At One Place"
---

# 15 qt to gal

**15 US quarts in US gallons: 15 qt = 3.75 gal**

gal = qt × 1/4

15 US quarts is 3.75 US gallons. To get there, multiply by 0.25.

## Values either side

*US quarts near 15, converted to US gallons.*

| US quarts | US gallons |
| --- | --- |
| 11 qt | 2.75 |
| 12 qt | 3 |
| 13 qt | 3.25 |
| 14 qt | 3.5 |
| 15 qt ← | 3.75 |
| 16 qt | 4 |
| 17 qt | 4.25 |
| 18 qt | 4.5 |
| 19 qt | 4.75 |

## 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

### What is 15 qt in US gallons?

15 qt is 3.75 gal.

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

Multiply by 0.25.

## Related pages

- [US quarts to US gallons](https://atoneplace.net/convert/quarts-to-gallons/)
- [15 gal to qt](https://atoneplace.net/convert/15-gallons-to-quarts/)
- [11 qt to gal](https://atoneplace.net/convert/11-quarts-to-gallons/)
- [12 qt to gal](https://atoneplace.net/convert/12-quarts-to-gallons/)
- [13 qt to gal](https://atoneplace.net/convert/13-quarts-to-gallons/)
- [14 qt to gal](https://atoneplace.net/convert/14-quarts-to-gallons/)
- [16 qt to gal](https://atoneplace.net/convert/16-quarts-to-gallons/)
- [17 qt to gal](https://atoneplace.net/convert/17-quarts-to-gallons/)
- [18 qt to gal](https://atoneplace.net/convert/18-quarts-to-gallons/)
- [19 qt to gal](https://atoneplace.net/convert/19-quarts-to-gallons/)

## 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/)