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US gallons to US quarts (gal (US) to qt)
Convert US gallons to US quarts: 1 gal (US) = 4 qt. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 gal (US) = 4 qt
US quarts = US gallons × 4 — reverse: US gallons = US quarts × 0.25
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 gal (US) = 20 qt
- 12.5 gal (US) = 50 qt
- 100 gal (US) = 400 qt
US gallons to US quarts conversion table
| US gallons (gal (US)) | US quarts (qt) |
|---|---|
| 1 | 4 |
| 2 | 8 |
| 3 | 12 |
| 4 | 16 |
| 5 | 20 |
| 6 | 24 |
| 7 | 28 |
| 8 | 32 |
| 9 | 36 |
| 10 | 40 |
| 15 | 60 |
| 20 | 80 |
| 25 | 100 |
| 30 | 120 |
| 40 | 160 |
| 50 | 200 |
| 75 | 300 |
| 100 | 400 |
| 200 | 800 |
| 250 | 1000 |
| 500 | 2000 |
| 1000 | 4000 |
FAQ
How many US quarts are in one gallon?
1 gal (US) = 4 qt. 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 gallons to US quarts?
Multiply the value in US gallons by 4: US quarts = US gallons × 4. For example, 5 gal (US) = 20 qt.
How do I convert US quarts back to US gallons?
Multiply by the inverse factor 0.25 (US gallons = US quarts × 0.25), or use the US quarts-to-US gallons page.
Related conversions
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=gal_us&to_unit=quart_us - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"gal_us","to_unit":"quart_us"} - Markdown: https://tttkmbb.com/conversion/gallons-to-quarts.md · JSON: https://tttkmbb.com/conversion/gallons-to-quarts.json (add
?value=for a result) · Units: /api/v1/units?quantity=volume - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.