Gallon to US fluid dram Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert gallons [Imp.gal.] to US fluid drams [US.fl.dr.] or US fluid drams [US.fl.dr.] to gallons [Imp.gal.]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 gallon [Imp.gal.] ≈ 1,229.7727 US fluid drams [US.fl.dr.]1 US fluid dram [US.fl.dr.] ≈ 8.132 * 10-4 gallons [Imp.gal.]

Convert gallons to US fluid drams

There are two simple ways to convert gallons [Imp.gal.] to US fluid drams [US.fl.dr.]. In the first calculation method, the value in gallons [Imp.gal.] is divided by the rounded conversion factor of 8.132 * 10-4. The second method multiplies the value in gallons [Imp.gal.] by the rounded conversion factor of 1,229.7727.

  • US fluid drams [US.fl.dr.] ≈ gallons [Imp.gal.] ÷ (8.132 * 10-4)
  • US fluid drams [US.fl.dr.] ≈ gallons [Imp.gal.] * 1,229.7727

However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of gallons [Imp.gal.] to US fluid drams [US.fl.dr.] can be achieved using the following calculation method.

  • US fluid drams [US.fl.dr.] = gallons [Imp.gal.] ÷ 60.48375 ÷ 61.11875 * 4,546,090

Convert US fluid drams to gallons

Converting US fluid drams [US.fl.dr.] to gallons [Imp.gal.] is easy and can be done in two ways. The first method involves multiplication, in which the value in US fluid drams [US.fl.dr.] is multiplied by the rounded conversion factor of 8.132 * 10-4. The second variant is a division. Here, the value in US fluid drams [US.fl.dr.] is divided by the rounded conversion factor of 1,229.7727.

  • Gallons [Imp.gal.] ≈ US fluid drams [US.fl.dr.] * 8.132 * 10-4
  • Gallons [Imp.gal.] ≈ US fluid drams [US.fl.dr.] ÷ 1,229.7727

However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of US fluid drams [US.fl.dr.] to gallons [Imp.gal.] can be achieved using the following calculation method.

  • Gallons [Imp.gal.] = US fluid drams [US.fl.dr.] * 60.48375 * 61.11875 ÷ 4,546,090

Converter

Decimal places

How it's calculated

Factor: 
≈ 1,229.773
US fluid drams = Gallons ÷ 60.48375 ÷ 61.11875 * 4,546,090
Gallons = US fluid drams * 60.48375 * 61.11875 ÷ 4,546,090

To all available units

Gallons

US fluid ounces

Gallons

US gallons

Gallons

Liquid pints

Gallons

Liquid quarts

Gallons

US minims

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