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Flag Size Calculator

Calculate the appropriate flag size for your flagpole height and determine proper flag dimensions.

Flag Size Calculator

Calculate the appropriate flag size for your flagpole height and determine proper flag dimensions.

Official US flag proportions (1.9:1)

Measure from ground to top of pole

Recommended Flag Size

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Enter pole height to calculate

Flag Specifications

Aspect Ratio:--
Flag Area:--

🇺🇸 Flag Etiquette

  • • Display from sunrise to sunset
  • • Illuminate if displayed at night
  • • Never let it touch the ground
  • • Fly at half-staff on designated days

Standard Flag Sizes

US Flag Sizes

Storm:5' x 9.5'
Garrison:8' x 15.2'
Post:10' x 19'
Field:15' x 28.5'
Fort:20' x 38'

Pole Height Guidelines

15-20':3' x 5'
20-25':4' x 6'
25-30':5' x 8'
30-40':6' x 10'
40-50':8' x 12'
50+':10' x 15'

About This Calculator

Match flag dimensions to pole height with standard display ratios for balanced and compliant presentation.

Formula

Flag width/height ratio based on standard display proportions.

Example

Input flagpole height to get recommended flag size combinations.

When to Use

  • Residential flag setup
  • Commercial display planning
  • Event and institutional use

Best Practices

  • Confirm every input uses the same measurement system your source uses.
  • Stress-test edge cases (zero, very small, very large) before trusting a plan.
  • If a number feeds a contract, note the formula version you relied on.

FAQ

What should I double-check first in Flag Size Calculator?

Units, time periods, and whether the output matches the question you meant to ask.

Can I use this for regulated or compliance work?

Only if your inputs and definitions are confirmed against applicable standards. Results are informational.

Important Note

Results are informational and should be independently verified for legal, medical, engineering, or financial use.

Related Guides

Keywords:

flag size calculatorus flag sizeflagpole calculatorpatriotic calculatorflag dimensions

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