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US quarts to US gallons (qt to gal (US))
Convert US quarts to US gallons: 1 qt = 0.25 gal (US). Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 qt = 0.25 gal (US)
US gallons = US quarts × 0.25 — reverse: US quarts = US gallons × 4
The factor is derived from the SI definitions of both units (base unit: L) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.
Worked examples
- 5 qt = 1.25 gal (US)
- 12.5 qt = 3.125 gal (US)
- 100 qt = 25 gal (US)
US quarts to US gallons conversion table
| US quarts (qt) | US gallons (gal (US)) |
|---|---|
| 1 | 0.25 |
| 2 | 0.5 |
| 3 | 0.75 |
| 4 | 1 |
| 5 | 1.25 |
| 6 | 1.5 |
| 7 | 1.75 |
| 8 | 2 |
| 9 | 2.25 |
| 10 | 2.5 |
| 15 | 3.75 |
| 20 | 5 |
| 25 | 6.25 |
| 30 | 7.5 |
| 40 | 10 |
| 50 | 12.5 |
| 75 | 18.75 |
| 100 | 25 |
| 200 | 50 |
| 250 | 62.5 |
| 500 | 125 |
| 1000 | 250 |
FAQ
How many US gallons are in one quart?
1 qt = 0.25 gal (US). 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 US quarts to US gallons?
Multiply the value in US quarts by 0.25: US gallons = US quarts × 0.25. For example, 5 qt = 1.25 gal (US).
How do I convert US gallons back to US quarts?
Multiply by the inverse factor 4 (US quarts = US gallons × 4), or use the US gallons-to-US quarts page.
Related conversions
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=quart_us&to_unit=gal_us - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"quart_us","to_unit":"gal_us"} - Markdown: https://tttkmbb.com/conversion/quarts-to-gallons.md · JSON: https://tttkmbb.com/conversion/quarts-to-gallons.json (add
?value=for a result) · Units: /api/v1/units?quantity=volume - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.