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Fluid Ounce (US) to Quart (US) (fl oz (US) to qt (US)) Calculator & Formula

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Live Conversion • ISO 80000-3:2019 Certified
1 Fluid Ounce (US) = 0.03125 Quart (US)
1 fl oz (US) = 0.03125 qt (US) • 1 qt (US) = 32 fl oz (US)
Fluid Ounce (US) to Quart (US): One Fluid Ounce (US) is equal to 0.03125 Quarts (US).
Certified Authority Value
0.03125000
qt (US)
Exact: 1 qt (US) ≡ 32 fl oz (US)
fl oz (US)
fl oz (US)
Swap to Quart (US) to Fluid Ounce (US)
qt (US)
qt (US) 0.03125
Quick Values:
1 fl oz (US) 5 fl oz (US) 10 fl oz (US) 25 fl oz (US) 50 fl oz (US) 100 fl oz (US) 250 fl oz (US) 500 fl oz (US) 1,000 fl oz (US)
Conversion Formula
To convert Fluid Ounce (US) to Quart (US), multiply by 0.03125
fl oz (US) × 0.03125 = qt (US)

Calculation: 1 fl oz (US) × 0.03125 = 0.03125 qt (US)

Common Fluid Ounce (US) to Quart (US) Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Fluid Ounce (US) (fl oz (US)) and Quart (US) (qt (US)).

Tap any row to calculate
Quart (US) to Fluid Ounce (US): Reciprocal Summary
Quart (US) to Fluid Ounce (US) Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 qt (US) is equal to 32 fl oz (US) (Fluid Ounce (US)) 3.2 × 10¹
5 qt (US) is equal to 160 fl oz (US) (Fluid Ounce (US)) 1.6 × 10²
10 qt (US) is equal to 320 fl oz (US) (Fluid Ounce (US)) 3.2 × 10²
50 qt (US) is equal to 1600 fl oz (US) (Fluid Ounce (US)) 1.6 × 10³
100 qt (US) is equal to 3200 fl oz (US) (Fluid Ounce (US)) 3.2 × 10³
View Complete 15-Row Quart (US) to Fluid Ounce (US) Table

Real-World Context & Everyday Benchmarks

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To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Fluid Ounce (US) (fl oz (US)) and Quart (US) (qt (US)):

Fluid Ounce (US) References:

  • Standard liquid pharmacy prescription medicine cup 1 fl oz (US)
  • Standard commercial cocktail bar spirits shot pour 1.5 fl oz (US)
  • Commercial aluminum soda can carbonated drink volume 12 fl oz (US)

Quart (US) References:

  • Automotive engine motor oil refill bottle 1 qt (US)
  • Countertop kitchen food blender mixing pitcher 2 qt (US)

Tap any benchmark above to automatically calculate its exact equivalent in Quart (US).

ISQ Dimension: [L³] Coherent SI Unit: cubic meter (m³) Classical Mechanics & Dimensional Metrology

How to Convert Fluid Ounce (US) to Quart (US)

Converting Fluid Ounce (US) (fl oz (US)) to Quart (US) (qt (US)) is a core calculation in Volume and Capacity, which measures the three-dimensional space enclosed within a boundary or occupied by a solid, liquid, or gas. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 Fluid Ounce (US) equals 0.03125 Quart (US), while 1 qt (US) equals 32 fl oz (US).

Direct Factor1 fl oz (US) = 0.03125 qt (US)
Inverse Ratio1 qt (US) = 32 fl oz (US)
Conversion ScaleMetric SI to British Imperial / US Customary Bridge
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

Mathematical Conversion Derivation via Coherent SI Base Unit

Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (cubic meter (m³)) without arbitrary rounding:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 fl oz (US) = 2.957353 × 10⁻⁵ cubic meter (m³)
2. Target SI Bridge (ktarget):1 qt (US) = 0.000946353 cubic meter (m³)
Step-by-step substitution for Fluid Ounce (US) → Quart (US):V(qt (US)) = V(fl oz (US)) × ( 2.957353 × 10⁻⁵ / 0.000946353 ) = V(fl oz (US)) × 0.03125
Mathematical FormulaValue in Quart (US) = Value in Fluid Ounce (US) × 0.03125Direct computational formula applied for standard conversion.
Worked Example

Evaluating an input of 12 Fluid Ounce (US) (fl oz (US)) produces 0.375 Quart (US) (qt (US)). In heavy-duty utility and industrial workloads, 1000 fl oz (US) equals 31.25 qt (US).

Inverse check: 1 qt (US) = 32 fl oz (US).

Understanding Fluid Ounce (US) and Quart (US)

Fluid Ounce (US)

fl oz (US)
Imperial / US

A Fluid Ounce (US) (fl oz (US)) is an imperial and US customary unit for volume and capacity.

Applications & Practical Context

In practical volume terms, a standard liquid pharmacy prescription medicine cup equals 1 fl oz (US), a standard commercial cocktail bar spirits shot pour equals 1.5 fl oz (US), a commercial aluminum soda can carbonated drink volume equals 12 fl oz (US).

Physical Setup

A physical magnitude of 1 fl oz (US) corresponds to 2.957353 × 10⁻⁵ m³ in standard SI measurement.

Conversion to SI Unit: cubic meter (m³)
1 fl oz (US) = 2.957353 × 10⁻⁵ m³

Quart (US)

qt (US)
Imperial / US

A Quart (US) (qt (US)) is an imperial and US customary unit for volume and capacity.

Applications & Practical Context

In practical volume terms, a automotive engine motor oil refill bottle equals 1 qt (US), a countertop kitchen food blender mixing pitcher equals 2 qt (US).

Physical Setup

A physical magnitude of 1 qt (US) corresponds to 0.000946353 m³ in standard SI measurement.

Conversion to SI Unit: cubic meter (m³)
1 qt (US) = 0.000946353 m³

Domain Metrology & Engineering Applications

Governing Law & Equation

Euclidean 3D Spatial Volume Integration (V = ∭ dx dy dz)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using gravimetric pycnometers, calibrated volumetric glassware, ultrasonic tank level gauges, and laser volume scanners.

Primary Industry Sectors

Applied across bulk liquid logistics, chemical process engineering, pharmaceutical compounding, and beverage manufacturing under international metrology standard ISO 80000-3:2019, NIST SP 811.

Physical Orders of Magnitude & Laboratory Reference Benchmarks

Physical Phenomenon / Engineering ReferenceReference ValueConverted to Quart (US)
Standard liquid pharmacy prescription medicine cup1 fl oz (US)0.03125 qt (US)
Standard commercial cocktail bar spirits shot pour1.5 fl oz (US)0.046875 qt (US)
Commercial aluminum soda can carbonated drink volume12 fl oz (US)0.375 qt (US)
Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-3:2019, NIST SP 811 and the BIPM SI Brochure (9th Edition). Governed by Euclidean 3D Spatial Volume Integration (V = ∭ dx dy dz) under ISO 80000 dimensional vector [L³].

Multi-Variable Engineering Bridge Material Science & Solid Displacement

Mass–Volume–Density Material Bridge (m³ • Liters • Gallons • Cu. Ft • Metric Tons • Pounds)

Calculate solid displacement, storage volume, and shipping mass using the fundamental mass-density relation m = ρ × V, bridging physical mass [M] and bulk volume [L³] via metrological solid density (ρ).

V = m / ρ
Live Calculated Bridge Equivalent:
1 fl oz (US) at Structural Carbon Steel (ASTM A36) = 3.7673 × 10⁻⁶ L
Equals 3.767329 × 10⁻⁹ m³ • 9.9522 × 10⁻⁷ gal (US) • 1.3304 × 10⁻⁷ ft³
Fluid / Disp Volume
3.7673 × 10⁻⁶
L
Liters
SI Standard
3.767329 × 10⁻⁹
m³
Cubic Meters
US Liquid Standard
9.9522 × 10⁻⁷
gal (US)
US Gallons
Imperial Standard
1.3304 × 10⁻⁷
ft³
Cubic Feet
Civil / Concrete
4.9275 × 10⁻⁹
yd³
Cubic Yards
UK Standard
8.287 × 10⁻⁷
gal (UK)
Imperial Gallons
  1. 1. Normalize Input to SI Base Unit (kg):
    m = 1 fl oz (US) × 2.95735296 × 10⁻⁵ = 2.95735296 × 10⁻⁵ kg
  2. 2. Apply Engineering Parameter (ρ):
    Selected condition: Structural Carbon Steel (ASTM A36) at ρ = 7850 kg/m³
  3. 3. Execute Governing Physical Law in SI Units:
    V = m / ρ = (2.95735296 × 10⁻⁵) ÷ (7850) = 3.767329 × 10⁻⁹ m³
  4. 4. Convert to Standard Engineering Units:
    • L: 3.767329 × 10⁻⁹ × 1000 = 3.7673 × 10⁻⁶ L (Liters) • m³: 3.767329 × 10⁻⁹ × 1 = 3.767329 × 10⁻⁹ m³ (Cubic Meters) • gal (US): 3.767329 × 10⁻⁹ × 264.1721 = 9.9522 × 10⁻⁷ gal (US) (US Gallons) • ft³: 3.767329 × 10⁻⁹ × 35.3147 = 1.3304 × 10⁻⁷ ft³ (Cubic Feet) • yd³: 3.767329 × 10⁻⁹ × 1.308 = 4.9275 × 10⁻⁹ yd³ (Cubic Yards) • gal (UK): 3.767329 × 10⁻⁹ × 219.9692 = 8.287 × 10⁻⁷ gal (UK) (Imperial Gallons)
Explore Full Density Converter →
Engineering Substance / Operating Standard Parameter Value (kg/m³) Reference State / Condition Typical Industrial & Engineering Application
Structural Carbon Steel (ASTM A36) 7850 20°C, standard mill carbon steel I-beams, rebar, plate & structural fabrication
Aluminum Alloy (6061-T6) 2700 20°C, wrought structural alloy Aerospace, automotive chassis & framing profiles
Pure Electrolytic Copper (ETP C11000) 8940 20°C, ASTM B187 Electrical busbars, wiring & heat exchanger tubing
Reinforced Concrete (Normal Weight) 2400 Cured, standard 28-day stone aggregate Civil engineering foundations, columns & slabs
Water (Pure Metrology Benchmark, 4°C) 1000 4°C, 1 atm (SG = 1.000) Hydraulic displacement calibration & SG standard
Structural Softwood (Dry Pine / Douglas Fir) 500 12% equilibrium moisture content Architectural timber framing & lumber freight
Structural Hardwood (White Oak) 750 Air-dried, 12% moisture Heavy timber construction, rail ties & flooring
Pure Gold Bullion (24K / 99.99%) 19320 20°C, cast bullion standard Precious metals custody & assay verification
Titanium Alloy (Grade 5 Ti-6Al-4V) 4430 Annealed, ASTM B265 Aerospace turbines, airframe forgings & implants
Gray Cast Iron (Class 30) 7200 20°C, ASTM A48 Engine cylinder blocks, pump housings & machine bases
Automotive Gasoline / Petrol (15°C) 740 15°C, ASTM D4814 Fuel tank volume sizing & bunkering logistics
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Frequently Asked Questions

The mathematical formula to convert fluid ounces (us) to quarts (us) is: [value] * 0.03125 = quarts (us). Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from quarts (us) back to fluid ounces (us), you must divide your starting value by 0.03125. Our bidirectional tool automatically computes this inverse equation the moment you type into the quart (us) input field.

1 Quart (US) is larger than 1 Fluid Ounce (US). Specifically, 1 Fluid Ounce (US) equals 0.03125 quarts (us), meaning 1 Quart (US) is 32 times larger than 1 Fluid Ounce (US) (a difference of 1.51 orders of magnitude). Expressing measurements in fluid ounces (us) requires a larger numerical value to represent the equivalent physical magnitude.

A typical standard liquid pharmacy prescription medicine cup measures 1 fl oz (US), which corresponds to 0.03125 qt (US) (Quart (US)).

There is exactly 0.03125 qt (US) in 1 fl oz (US). The precise conversion equation is 1 fl oz (US) = 0.03125 qt (US).

To calculate the conversion, multiply the volume by 0.03125. The exact formula is V(qt (US)) = V(fl oz (US)) × 0.03125.

To convert backwards, multiply the Quart (US) volume by 32. The reverse formula is V(fl oz (US)) = V(qt (US)) × 32.

A standard US liquid gallon contains exactly 4 quarts or 128 fluid ounces. One US fluid ounce is equivalent to approximately 29.57 mL, widely used in precision dosing and fluid dynamics.

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