Gallons to Liters Converter
Save on GoogleTip: type a volume in gallons, then pick US liquid, US dry or UK imperial gallons. Switch Direction for liters to gallons. Several values (new line, space or semicolon) and decimals like 3.785 or 3,785 also work. Several values (new line, space or semicolon) and decimals like 12.5 or 12,5 also work. Several values (new line, space or semicolon) and decimals like 12.5 or 12,5 also work.
Output appears here
Related Measurement & Unit Conversion Utilities
Weight & Mass
lbs → kg
Pounds to Kilograms Converter
Convert body weight, gym plates, and shipping parcel weights from lbs to exact metric kilograms.
Weight & Mass
kg → lbs
Kilograms to Pounds Converter
Translate metric weight benchmarks into imperial pounds and ounces for fitness and travel luggage limits.
Temperature
°C → °F
Celsius to Fahrenheit Converter
Convert weather forecasts, clinical fever readings, and cooking temperatures from °C to °F instantly.
Temperature
°F → °C
Fahrenheit to Celsius Converter
Convert American oven baking temperatures (e.g., 350°F, 400°F) and weather stats into standard Celsius.
Kitchen & Postal
g → oz
Grams to Ounces Converter
Convert dry baking ingredients, coffee beans, and small postal mail weights from grams to avoirdupois ounces.
Kitchen & Postal
oz → g
Ounces to Grams Converter
Translate US recipe portions, nutrition labels, and gold/silver weights into exact metric grams.
Speed & Velocity
mph → km/h
MPH to KMH Converter
Convert miles per hour highway speed limits, wind speeds, and vehicle top speeds into kilometers per hour.
Speed & Velocity
km/h → mph
KMH to MPH Converter
Convert international road speed signs, cycling pace, and running treadmill speeds from km/h to mph.
Liquid Volume
L → gal
Liters to Gallons Converter
Calculate fuel tank capacity, aquarium water volumes, and beverage containers from liters to US/UK gallons.
Drinks & Recipes
fl oz → mL
Fluid Ounces to Milliliters Converter
Convert water bottle sizes (e.g., 16.9 fl oz, 32 fl oz), cocktails, and liquid medicine doses into exact mL.
Drinks & Travel
mL → fl oz
Milliliters to Fluid Ounces Converter
Check TSA airline liquid limits (100 mL = 3.4 fl oz), skincare bottles, and espresso shots in fluid ounces.
Real Estate & Area
sq ft → sq m
Square Feet to Square Meters Calculator
Convert apartment floor plans, house plot sizes, and flooring tiles from sq ft to international sq meters.
Real Estate & Area
sq m → sq ft
Square Meters to Square Feet Calculator
Multiply square meters by 10.764 to calculate exact room dimensions, carpet area, and property listings in sq ft.
Baking & Cooking
Cups → mL
Cups to Milliliters Converter
Convert US standard cups (236.6 mL) and metric cups (250 mL) into precise milliliters for baking recipes.
Example 1: Convert 15 US Gallons to Liters
| Step | Calculation | Result |
|---|---|---|
| 1. Multiply by 3.785411784 | 15 x 3.785411784 | 56.78117676 L |
| 2. Round to 2 decimals | 56.78117676 L | 56.78 L |
| 3. Milliliters | L x 1000 | 56781.177 mL |
15 US gal = 56.78 L (56.78117676 L exactly), a typical car tank.
Example 2: Convert 10 US Dry Gallons to Liters
| Step | Calculation | Result |
|---|---|---|
| 1. Multiply by 4.40488377086 | 10 x 4.40488377086 | 44.04883771 L |
| 2. Round to 2 decimals | 44.04883771 L | 44.05 L |
| 3. Milliliters | L x 1000 | 44048.838 mL |
10 US dry gal = 44.05 L (44.0488377086 L exactly).
US Gallons to Liters Automotive and Fluid Lookup Table (1 gal to 50 gal)
| US Gallons (gal) | Liters (L, 2 decimals) | Liters (L, 4 decimals) | Typical Use |
|---|---|---|---|
| 1 | 3.79 | 3.7854 | Gallon jug (milk, washer fluid) |
| 2 | 7.57 | 7.5708 | |
| 3 | 11.36 | 11.3562 | |
| 4 | 15.14 | 15.1416 | |
| 5 | 18.93 | 18.9271 | 5-gallon bucket |
| 6 | 22.71 | 22.7125 | |
| 7 | 26.50 | 26.4979 | |
| 8 | 30.28 | 30.2833 | |
| 9 | 34.07 | 34.0687 | |
| 10 | 37.85 | 37.8541 | |
| 11 | 41.64 | 41.6395 | |
| 12 | 45.42 | 45.4249 | |
| 13 | 49.21 | 49.2104 | |
| 14 | 53.00 | 52.9958 | |
| 15 | 56.78 | 56.7812 | Typical car tank |
| 16 | 60.57 | 60.5666 | |
| 17 | 64.35 | 64.3520 | |
| 18 | 68.14 | 68.1374 | |
| 19 | 71.92 | 71.9228 | |
| 20 | 75.71 | 75.7082 | Large car or small SUV tank |
| 21 | 79.49 | 79.4936 | |
| 22 | 83.28 | 83.2791 | |
| 23 | 87.06 | 87.0645 | |
| 24 | 90.85 | 90.8499 | |
| 25 | 94.64 | 94.6353 | |
| 26 | 98.42 | 98.4207 | |
| 27 | 102.21 | 102.2061 | |
| 28 | 105.99 | 105.9915 | |
| 29 | 109.78 | 109.7769 | |
| 30 | 113.56 | 113.5624 | Full-size truck tank |
| 31 | 117.35 | 117.3478 | |
| 32 | 121.13 | 121.1332 | |
| 33 | 124.92 | 124.9186 | |
| 34 | 128.70 | 128.7040 | |
| 35 | 132.49 | 132.4894 | |
| 36 | 136.27 | 136.2748 | |
| 37 | 140.06 | 140.0602 | |
| 38 | 143.85 | 143.8456 | |
| 39 | 147.63 | 147.6311 | |
| 40 | 151.42 | 151.4165 | |
| 41 | 155.20 | 155.2019 | |
| 42 | 158.99 | 158.9873 | |
| 43 | 162.77 | 162.7727 | |
| 44 | 166.56 | 166.5581 | |
| 45 | 170.34 | 170.3435 | |
| 46 | 174.13 | 174.1289 | |
| 47 | 177.91 | 177.9144 | |
| 48 | 181.70 | 181.6998 | |
| 49 | 185.49 | 185.4852 | |
| 50 | 189.27 | 189.2706 | Large truck tank |
Pool and Tank Capacity Benchmark Matrix (US Gallons)
| US Gallons (gal) | Liters (L) | Cubic Meters (m3) | UK Imperial Gallons | Typical Size |
|---|---|---|---|---|
| 100 | 378.54 | 0.379 | 83.27 | Stock tank or rain barrel |
| 250 | 946.35 | 0.946 | 208.17 | Home water storage tank |
| 500 | 1892.71 | 1.893 | 416.34 | Large storage tank |
| 1000 | 3785.41 | 3.785 | 832.67 | Small pool or large cistern |
| 5000 | 18927.06 | 18.927 | 4163.37 | Residential swimming pool |
Capacities are typical examples only. Pool and tank sizes vary widely, so check the actual volume for your own tank.
US Liquid vs US Dry vs UK Imperial Gallons to Liters
| Gallons | US Liquid (L) | US Dry (L) | UK Imperial (L) |
|---|---|---|---|
| 1 | 3.79 | 4.40 | 4.55 |
| 2 | 7.57 | 8.81 | 9.09 |
| 5 | 18.93 | 22.02 | 22.73 |
| 10 | 37.85 | 44.05 | 45.46 |
| 15 | 56.78 | 66.07 | 68.19 |
| 20 | 75.71 | 88.10 | 90.92 |
| 50 | 189.27 | 220.24 | 227.30 |
| 55 | 208.20 | 242.27 | 250.03 |
Liters to Gallons Reference
| Liters (L) | US Liquid Gallons | US Dry Gallons | UK Imperial Gallons |
|---|---|---|---|
| 5 | 1.3209 | 1.1351 | 1.0998 |
| 10 | 2.6417 | 2.2702 | 2.1997 |
| 20 | 5.2834 | 4.5404 | 4.3994 |
| 40 | 10.5669 | 9.0808 | 8.7988 |
| 50 | 13.2086 | 11.3510 | 10.9985 |
| 100 | 26.4172 | 22.7021 | 21.9969 |
Technical Q&A / FAQ Matrix
| Technical Developer Question | Exact Solution & Code Snippet |
|---|---|
| How do I convert US gallons to liters in JavaScript? | (15 * 3.785411784).toFixed(2) // 56.78 |
| How do I convert US gallons to liters in Python? | round(15 * 3.785411784, 2) # 56.78 |
| How do I convert US gallons to liters in Go? | fmt.Printf("%.2f\n", 15*3.785411784) |
| How do I convert US gallons to liters in Java? | System.out.printf("%.2f%n", 15 * 3.785411784); |
| How do I convert US gallons to liters in C#? | Console.WriteLine((15 * 3.785411784).ToString("F2")); |
| How do I convert US gallons to liters in PHP? | echo round(15 * 3.785411784, 2); |
| How do I convert US gallons to liters in Rust? | println!("{:.2}", 15.0_f64 * 3.785411784); |
| How do I convert US gallons to liters on Linux? | awk 'BEGIN { printf "%.2f\n", 15 * 3.785411784 }' |
| How do I convert UK gallons to liters in JavaScript? | (10 * 4.54609).toFixed(2) // 45.46 |
| How do I convert UK gallons to liters in Python? | round(10 * 4.54609, 2) # 45.46 |
| How do I convert US gallons to liters by hand? | Multiply by 3.785411784. A quick estimate is to multiply by 3.8. For example 15 gal = 56.78 L. |
| How do I convert UK gallons to liters by hand? | Multiply by 4.54609. A quick estimate is to multiply by 4.5. For example 10 UK gal = 45.46 L. |
| What is a US dry gallon? | A US dry gallon is 1/8 of a US bushel, exactly 268.8025 cubic inches or 4.40488377086 L. It is used for dry goods such as grain, not for fuel or liquids. |
| How many liters are in a 55 gallon drum? | 55 US gal = 208.20 L (208.19764812 L exactly). A 55 UK gal drum would be 250.03 L. |
| Why is 3.785411784 exact? | The US liquid gallon is defined as 231 cubic inches, and 1 inch is exactly 2.54 cm, so 231 x 16.387064 mL = 3785.411784 mL exactly. |
| Why does code show 0.30000000000000004 for 0.1 + 0.2? | Floating-point numbers store binary approximations of decimals. Round for display, for example (15 * 3.785411784).toFixed(2) gives 56.78. This tool uses exact decimal math, so it never shows that error. |