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Lundsys Flag Ratio Calculator

American flag with proper dimensions

Flag Height(A)

Flag Width (B)

Flag Stripes Height (H)

Union Height (C)

Union Width (D)

Star Gaps - Height (E)

Star Gaps - Width (F)

Stars Diameter (G)

Rendered result after using data from this calculator:

Rendered in Vectric from numbers used

The American Flag Ratios

American flag with proper dimensions

This American flag calculator uses the American flag proportions presented in Title 4 of the United States Code, § 1 and § 2. These American flag measurements ratios are:

    (A) Height (hoist) of the flag = 1.0;

    (B) Width (fly) of the flag = 1.9;

    (C) Union height (Hoist of the canton) = 0.5385 (A × 7/13, spanning seven stripes);

    (D) Union width (Fly of the canton) = 0.76 (2/5 of the flag width B);

    (E) Distance between union stars - vertical = 0.0538 (1/10 of the height of the union C);

    (F) Distance between union stars - horizontal = 0.0633 (1/12 of the width of the union D);

    (G) Diameter of star = 0.0616 (4/5 of the stripe width H); and

    (H) Width of stripe = 0.0769 (1/13 of the flag height A).

💡 American flag layout should use the following colors in hex code:
• Red #B22234
• White #FFFFFF
• Blue #3C3B6E


The American Flag

American flag with proper dimensions

The American flag is one of the most recognizable symbols in the world, representing the United States of America and its values. Its design and dimensions have changed over time, reflecting the evolution of the country and its identity. In this article, we will explore the history and dimensions of the American flag, from its early beginnings to its current form.

The American flag, also known as the Stars and Stripes, has a long and complex history. The first official flag of the United States was adopted by the Continental Congress on June 14, 1777. It consisted of 13 alternating red and white stripes, representing the 13 colonies, and a blue field with 13 white stars, representing the unity of the states. The dimensions of the flag were not specified, but it was likely rectangular in shape.

Over time, as more states were added to the Union, the design of the flag evolved to include additional stars and stripes. In 1795, the number of stripes was increased to 15 to represent the 15 states in the Union, but this caused the flag to become too long and narrow. In 1818, Congress passed a law reverting the number of stripes to 13, to represent the original colonies, and adding a new star for each state added to the Union. This design, known as the "Great Star" flag, was the basis for the modern American flag.

The dimensions of the American flag have also evolved over time. The first official flag had no specified dimensions, but it is believed to have been rectangular, with a length-to-width ratio of 3:2. This ratio was commonly used in European heraldry and was adopted by the American flag.

In 1912, President William Howard Taft established the first official flag standard, which specified the dimensions of the flag. According to the standard, the flag should have a length-to-width ratio of 1.9:1, or approximately 10:19. This standard was updated in 1959, and the current dimensions of the American flag are 1.9 meters (6 feet) wide and 3.6 meters (12 feet) long.

The American flag has also been used in a variety of contexts throughout its history. It has been raised over battlefields, flown from government buildings, and displayed at patriotic events. It has also been the subject of controversy, as individuals and groups have sought to express their political beliefs through its use.

In conclusion, the American flag is an enduring symbol of the United States and its values. Its design and dimensions have evolved over time, reflecting the growth and development of the country. The current dimensions of the flag, established in 1959, are 1.9 meters wide and 3.6 meters long. Regardless of its dimensions, the American flag remains an important symbol of American identity and unity.


Star Spacing

American flag with proper dimensions

United States Army's flag regulation AR 840-10 states that the stars should be arranged in rows of alternating five and six stars.

Based on this arrangement, the horizontal spacing between rows of stars can be calculated as follows:

Let W be the width of the flag, and let S be the spacing between stars (which is determined using the formula S = H / (N + 1), where H is the height of the blue field and N is the number of rows of stars).

The width of the blue field (where the stars are located) is 0.5385 times the width of the flag. Therefore, the width of each row of stars is:

W_row = 0.5385 x W

Each row of stars contains either five or six stars. To calculate the horizontal spacing between rows, we need to subtract the total width of the stars in each row from the width of the blue field, and then divide by the number of spaces between the stars.

If there are five stars in a row, there are four spaces between them. If there are six stars in a row, there are five spaces between them.

Therefore, the horizontal spacing between rows of stars can be calculated as follows:

For rows with five stars: Spacing = (0.5385 x W - 5 x D) / 4

For rows with six stars: Spacing = (0.5385 x W - 6 x D) / 5

Where D is the diameter of a single star, which is 0.0616 times the height of the blue field.

Using these formulas, we can calculate the horizontal spacing between rows of stars for the current design of the American flag with 50 stars arranged in nine rows of alternating five and six stars. In this case, the horizontal spacing between rows of stars is approximately 0.0633 times the width of the flag.


Respecting the flag

American flag with proper dimensions

The American flag is an iconic symbol of the United States of America and represents the values of freedom, justice, and democracy. As such, it is important to handle and display the flag with respect and dignity. In this article, we will discuss the proper handling of an American flag to show our patriotism and honor to our country.

Folding the Flag:

When the flag is not being displayed, it should be folded neatly into a triangle shape. The proper way to fold the flag is to first fold it in half lengthwise and then fold it in half again. Next, bring the striped corner of the folded edge to the open edge, forming a triangle. Continue to fold the triangle in this manner until only the blue field with stars is visible.

Raising and Lowering the Flag:

When raising or lowering the flag, it should be done slowly and with respect. The flag should never touch the ground or floor. When raising the flag, it should be hoisted briskly and when lowering the flag, it should be done slowly and ceremoniously.

Displaying the Flag:

The flag should be displayed with respect and dignity. It should be flown from a flagpole or hung vertically from a wall with the blue field on the left-hand side. The flag should be illuminated when displayed at night.

Cleaning the Flag:

The American flag should be cleaned regularly to keep it looking its best. However, it is important to note that the flag should never be washed in a washing machine. Instead, it should be hand washed in cold water with a mild detergent and hung to dry.

Proper Disposal of the Flag:

When the flag becomes worn or damaged, it should be retired in a respectful manner. This can be done by burning the flag in a private and dignified ceremony. Alternatively, the flag can be buried in a respectful manner.

In conclusion, the American flag is a powerful symbol of our country's values and principles. By handling the flag with respect and dignity, we show our love and honor for our country. Remember to always fold the flag properly, raise and lower it with care, display it respectfully, clean it regularly, and dispose of it properly. Let us continue to show our patriotism and love for our country by properly handling the American flag.