Square Footage Calculator

Square Footage Calculator Tool

Do you find yourself needing to calculate the square footage of a space for a variety of reasons? Well – calculating a rectangular or square space is straightforward and easy with our tool from Zippy calc. BUT – what if you need to calculate the square footage of an oddly shaped space? We’ve got you covered there too – circle, circle border, annulus, trapezoid – we’ve got them all to help you with what you need! If you’re interested in seeing what other tools and capabilities we have available – check out our Life Tools category.

Square Footage Calculator – Overview and Summary


Many people often find themselves needing to measure square footage, whether it’s for home improvement, event planning, or even purchasing furniture. Let’s take a dive into why this measurement is crucial, its history, the connection with other terms, and fun facts about the square footage calculation.

Quick summary:

  • The article explores the history of measuring square footage.
  • We will discover the link between square footage calculations and other measurements.
  • We will learn about the importance of knowing square footage in everyday life.
  • The discussion will include common reasons for calculating the room’s square footage.
  • The article ends with fun trivia about square footage calculations.

History of Measuring Square Footage Calculations

Though exact origins are undefined, the practice of measuring spaces using standardized units dates back millennia. Initially, simple comparative measures, like the length of a foot or width of a hand, were utilized. It wasn’t until much later, with the development of sophisticated building techniques and improved measuring tools, that square footage became a universal measure of space.

Importance of Knowing Square Footage Calculations in Everyday Life

Knowing a room’s square footage can ease everyday tasks like choosing the right size rug or deciding on the air conditioner’s capacity. It also assists in estimating the amount of paint or wallpaper needed, thereby preventing waste and unnecessary expenditure.

Common Reasons for Calculating Square Footage of a Room

There are several reasons to calculate a room?s square footage:

  • Determining space for furniture placement.
  • Deciding on the type and capacity of heating or cooling systems required.
  • Estimating paint or wallpaper requirements.
  • Assessing a property’s price while buying or selling.

Do You Know?

Now let’s dive into some fun facts about measuring square footage:

  • The largest single-story building by floor space is the Boeing Everett Factory in Washington State, measuring at a whopping 399,480 square meters.
  • The smallest house in the world, according to the Guinness World Records, is the Keret House in Warsaw, Poland, with an interior that measures only 92.5 square feet.
  • Square footage calculations are crucial in real estate, and they can drastically affect a property’s value.
  • Badly calculated square footage led to a serious architectural blunder in 1977, when a new skyscraper in Kansas City, USA, collapsed during construction due to miscalculations in weight and size.

Zippy Calc Key Benefits

  • FAST

    Optimized for SPEED. We pride ourselves on having FAST calculators available for you. We know you’ve got other important things to do and that’s why we’ve reduced all excess button clicks so you can be in, out, and on your way.


    No charge to you. We get paid and keep the lights on via our advertisers on the site (which we try to make as least intrusive as possible)


    Here’s a tidbit. We include stats and interesting facts alongside of each of our calculators. These may be helpful to you along your way and provide you an insight and link to a resource to help you on your way.


    Chose not to be boring. We’ve found that a lot of our competitors (yes, there are online calculator competitors, can you believe the world we live in) have very BORING websites. We’re not trying to be boring. We want you to have a chuckle.