How do I convert gal to mL?

Use the formula shown above or enter a value to see gal converted to mL instantly.

What is the formula for gal to mL?

The converter calculates mL by applying the category-specific conversion factor for Volume.

When should I use gal vs mL?

gal and mL are both part of the Volume category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Volume Converter & Liquid Reference

Convert gal to mL

Use the live converter below to translate between Gallon (US) (gal) and Milliliter (mL). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

gal → mL

Gallon (US)

gal

Milliliter

3,785.4118

Rounded result (4 decimals max)

Formula

1 gal = 3,785.4118 mL

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from mL to gal.

Back to main converter

gal to mL quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Gallon (US) (gal)	Milliliter (mL)
0.25 gal	946.3529 mL
0.5 gal	1,892.7059 mL
1 gal	3,785.4118 mL
2 gal	7,570.8236 mL
5 gal	18,927.0589 mL
10 gal	37,854.1178 mL
25 gal	94,635.2946 mL
100 gal	378,541.1784 mL