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Beginner's Guide
FREE U.S. SHIPPING on purchases over $50!

Plus, receive a free mosaic tile organizer with every $50 you spend
in one order!

"How many tiles do I need?"

To determine how many tiles you need to buy, you'll need to
calculate the surface area that you plan to cover first.  We've
provided an area calculator below to make it easy!

  • CIRCLE - You'll need to know the radius of your circle.  (This
    is the distance from the center of your circle to the outer
    edge.)
  • SQUARE - You'll need to know the length of one side of your
    square.
  • TRIANGLE - You'll need to know the base width and the
    height of your triangle.
  • RECTANGLE - You'll need to know the width and height of
    your rectangle.
  • SPHERE / BALL - You'll need to know the radius of the
    sphere.  (This is the distance from the center of your sphere
    to the outer edge.

Directions:  Use the drop down box on the left to select the shape
you're using.  Your browser will need to allow pop-ups so a box can
open and request the measurement(s).  Enter the requested info,
hit enter, and your answer will appear in the box on the right.  See
below for further explanations of the answer.
Find the area of a =

Free JavaScripts provided
by The JavaScript Source

"I've calculated the area, now what?"

The short answer:  
Divide the area by 25 to determine how many
tile sets you need.

The long answer:  If you gave your dimensions in inches, the
answer the area calculator gave you is in square inches.  For
example, if you're covering a square that measures 12" along each
side, the answer the calculator gave you was 144.  This means
there are 144 square inches in a 12" square.

Each standard tile set in our store contains 25 square inches of
glass regardless of tile size, so no matter what shape you're
covering, you just need to divide your answer by 25.  This will tell
you how many sets of tiles you'll need to buy.  (Unless you're
buying the oversized sale packs, which contain 125 square inches
of glass...in which case you'll divide your answer by 125 to
determine how many large packages of tiles you'll need.)

Continuing with the same example from above, you would divide
144 by 25, which is 5.76.  Depending on how much space you
leave between each tile, you could possibly get away with 5 sets of
tiles, but it's usually best to be on the safe side and round up when
it's that close.  (Or if you're interested in an oversized sale pack,
you could probably get away with buying one of these.   If you add
an additional standard size set, you'll definitely be covered!

Will any of this be on the math test?

No, you can relax now & enjoy your mosaics!

Please eMail us if you have any questions!


Area Calculator