--- title: "40 gal to qt = 160 qt" description: "40 US gallons is 160 US quarts. The arithmetic, a table of nearby values, and a converter for any other number." url: https://atoneplace.net/convert/40-gallons-to-quarts/ site: "At One Place" --- # 40 gal to qt **40 US gallons in US quarts: 40 gal = 160 qt** qt = gal × 4 40 US gallons is 160 US quarts. To get there, multiply by 4. ## Values either side *US gallons near 40, converted to US quarts.* | US gallons | US quarts | | --- | --- | | 32 gal | 128 | | 35 gal | 140 | | 36 gal | 144 | | 37 gal | 148 | | 40 gal ← | 160 | | 45 gal | 180 | | 50 gal | 200 | | 55 gal | 220 | | 60 gal | 240 | ## How the conversion works The relationship is qt = gal × 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 40 gal in US quarts? 40 gal is 160 qt. ### How do you convert US gallons to US quarts? Multiply by 4. ## Related pages - [US gallons to US quarts](https://atoneplace.net/convert/gallons-to-quarts/) - [40 qt to gal](https://atoneplace.net/convert/40-quarts-to-gallons/) - [32 gal to qt](https://atoneplace.net/convert/32-gallons-to-quarts/) - [35 gal to qt](https://atoneplace.net/convert/35-gallons-to-quarts/) - [36 gal to qt](https://atoneplace.net/convert/36-gallons-to-quarts/) - [37 gal to qt](https://atoneplace.net/convert/37-gallons-to-quarts/) - [45 gal to qt](https://atoneplace.net/convert/45-gallons-to-quarts/) - [50 gal to qt](https://atoneplace.net/convert/50-gallons-to-quarts/) - [55 gal to qt](https://atoneplace.net/convert/55-gallons-to-quarts/) - [60 gal to qt](https://atoneplace.net/convert/60-gallons-to-quarts/) ## 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/)