Linear Conversions
Convert 16 feet to other dimensions:
Keystroke Display
[On/C] [On/C]
0.
16 [Feet]
16
FEET
[Conv] [Yds]
5.333333
YD
[Conv] [Feet]
16
FEET
0
INCH
[Conv] [Inch]
192
INCH
[Conv] [Met]
4.8768
M
Square and Cubic Conversions
Convert 25 square feet to other square dimensions:
Keystroke Display
[On/C] [On/C]
0.
25 [Feet] [Feet]*
25.
SQ FEET
[Conv] [Yds]
2.777778
SQ YD
[Conv] [Met]
2.322576
SQ M
Convert 25 cubic feet to cubic yards.
Keystroke Display
[On/C] [On/C]
0
.
25 [Feet] [Feet] [Feet]*
25.
CU FEET
[Conv] [Yds]
0.925926
CU YD
*Press [Feet] twice for square feet; press [Feet] three
times for cubic feet.
Dimensional Math
Keystroke Display
[On/C] [On/C]
0.
10 [Inch] [+] 2 [Feet] 5 [Inch] [=] 3
FEET
3
INCH
2 [Feet] [x] 1 [Feet] 2 [Inch] [=]
2.333333
SQ FEET
5 [Feet] [-] 1 [Inch] 3 [/] 4[=]
4
FEET
10-1/4
INCH
10 [Feet] [÷] 1 [Inch] 1 [/] 4 [=]
96.
59 [Feet] [Feet] [+] 10 [%]
64.9
SQ FEET
“Square-up”/Diagonal
“Square up”(find the diagonal to ensure a perfect
square) a concrete pad that has a length of 10 feet
and a width of 20 feet.
Keystroke Display
[On/C] [On/C]
0.
10 [Feet] [Conv] [x] [+]
100.
SQ FEET
20 [Feet] [Conv] [x]
400.
SQ FEET
[=]
500.
SQ FEET
[Conv] [÷]
22
FEET
4-5/16
INCH
Material Calculations
The following calculations are based on common
industry standards (see “
Default Values for
Materials
”) for estimating quantities of materials.
You may need to adjust your calculations if you use
values other than specified. Also, remember to factor
in a waste allowance when ordering materials.
Tons of Gravel
How much gravel do you need to cover a 36' x 11'
driveway 2" deep?
Keystroke
Display
[On/C] [On/C]
0.
36 [Feet] [x] 11 [Feet] [ x ] 2 [Inch] [=] 66. CU FEET
[Conv] [0]
(Gravel)
3.18 tn
Number of Tiles
How many tiles do you need to fill a floor measur-
ing 150 square feet? You’re not sure of the tile
size you’re going to use, so in this example, find
the number of tiles in various sizes. Note: After
converting to Tile, press the [1] key until you
reach the desired tile size. The ProjectCalc lists
seven of the most popular tile sizes.
Keystroke Display
[On/C] [On/C]
0.
150 [Feet] [Feet]
150.
SQ FEET
[Conv] [1]
(Tile)
66.67
(18 in)
[1]
(Tile)
150.00
(12 in)
[1]
(Tile)
337.50
(8 in)
[1]
(Tile)
600.00
(6 in)
MATERIAL EXAMPLES
DIMENSION EXAMPLES
[1]
(Tile)
1350.00
(4 in)
[1]
(Tile)
5400.00
(2 in)
[1]
(Tile)
21600.00
(1 in)
Number of Bricks/Blocks
for a Wall
Find the number of (face) bricks or concrete blocks
needed to do a 40' x 3' wall.
Keystroke Display
[On/C] [On/C]
0.
40 [Feet] [x] 3 [Feet] [=]
120.
SQ FEET
[Conv] [2]
(Brick)
822.86 F br
[Conv] [3]
(Block)
135.00 bL
Number of Paver Bricks
Find the number of (paver) bricks required for a 3'
x 18' walkway.
Keystroke Display
[On/C] [On/C]
0.
3 [Feet] [x] 18 [Feet] [=]
54.
SQ FEET
[Conv] [2]
(Brick)
370.29 F br
[2]
(Brick)
243.00 P br
Number of 4'x8' Sheets
How many 4' x 8' drywall sheets do you need for a
wall measuring 20' 5" x 15'?
Keystroke Display
[On/C] [On/C]
0.
20 [Feet] 5 [Inch] [x] 15 [Feet] [=] 306.25 SQ FEET
[Conv] [4]
(4x8 Sheet)
9.57 Sh
Gallons of Paint
How many gallons of paint will you need to cover
a wall that is 100' long x 8' high?
Keystroke Display
[On/C] [On/C]
0.
100 [Feet] [x] 8 [Feet] [=]
800.
SQ FEET
[Conv] [5]
(Paint)
2.29 GL
How many square feet will 2 gallons cover?
Keystroke Display
2 [Conv] [5]
(Paint)
700.
SQ FEET
Rolls of Wallpaper
Find the number wallpaper rolls needed for a wall
measuring 10' 6" x 12'.
Keystroke Display
[On/C] [On/C]
0.
10 [Feet] 6 [Inch] [x] 12 [Feet] [=]
126.
SQ FT
[Conv] [6]
(Wallpaper)
2.25 rl
Board Feet Calculations
Find the total board feet for three 2" x 4" x 14'
boards:
Keystroke Display
[On/C] [On/C]
0.
2 [Inch] [x] 4 [Inch] [x] 14 [Feet] [=]
1344.
CU INCH
[Conv] [7]
(Board Feet)
9.33 bF
[x] 3 [=]
27.99
Number of Studs
How many 16" on-center studs are required for a
15 feet 6-1/2 inch wall?
Keystroke
Display
[On/C] [On/C]
0.
15 [Feet] 6 [Inch] 1 [/] 2 15 FEET 6-1/2 INCH
[Conv] [8]
(Studs)*
13. St
*Automatically includes one stud for the end.
Bundles of Roof Shingles
How many bundles of roof shingles will you need
to cover a 14' x 11' roof?
Keystroke Display
[On/C] [On/C] 0.
14 [Feet] [x] 11 [Feet] [=] 154.
SQ FEET
[Conv] [9]
(Roof Bundle)
4.62 rF bn
Finding Cost of Materials
You can use the ProjectCalc to determine the total
cost of a project, if you know the material’s cost per
unit. See the following examples
.
Cost of Paint
How many gallons of paint will you need to cover
four (4) walls, if they each measure 10' x 8'? If the
paint costs $21.97 per gallon, what is the total cost?
Keystroke Display
[On/C] [On/C]
0.
10 [Feet] [x]
10
FEET
0
INCH
8 [Feet] [=] 80 SQ FEET
[x] 4 [=] 320 SQ FEET
[Conv] 5
(Paint)*
0.91 GL
[x] 21.97 [Conv] [ • ]
(Cost)**
19.99
* .91 is just under one gallon
** The cost is just under $20.00
Cost of Concrete
How much will 1,250 cubic feet of concrete cost if
the cost per cubic yard is quoted at $50? Convert
cubic feet to cubic yards. Then find the total cost.
Keystroke Display
[On/C] [On/C]
0.
1250 [Feet] [Feet] [Feet]
1250.
CU FEET
[Conv] [Yds] 46.2963
CU
YD
[x] 50 [Conv] [ • ]
(Cost)
2314.81
(It’ll cost just under $2,315)
[On/C] — On/Clear Key
Turns power on. Pressing once clears the display.
Pressing twice clears all temporary values.
[Off] — Off Key
Turns all power off, clearing all non-permanent
registers.
[%] — Percent Key
Four-function percent key.
[+] [–] [x] [÷] [=]
Arithmetic operation keys.
[0] — [9] and [ • ]
Digits used for keying-in numbers.
Dimension Keys
Entering Square or Cubic
To label a dimension as “square” or “cubic,” enter the
value, then press the desired unit (of measure) key
twice for square and three times for cubic. For exam-
ple, to enter 25 cubic yards, press 25 [Yds] [Yds] [Yds].
[Yds] — Yards Key
Enters or converts to
yards
.
[Feet] — Feet Key
Enters or converts to feet as whole or decimal
numbers. Also used with the [Inch] and [/] keys
for entering Feet-Inch values (e.g., 6 [Feet] 9
[Inch] 1 [/] 2). Repeated presses during conver-
sions toggle between Feet-Inch and Decimal Feet.
[Inch] — Inch Key
Enters or converts to
inches
. Entry can be whole
or decimal numbers. Also used with the [/] key for
entering fractional inch values (e.g., 9 [Inch] 1 [/]
2). Repeated presses during conversions toggle
between Fractional and Decimal Inches.
[Met] — Meter Key
Enters or converts to
Meters
.
[ / ] — Fraction Bar Key
Used to enter fractions. Fractions can be entered
as proper (1/2, 1/8, 1/16) or improper (3/2, 9/8).
Fraction Resolution
Your calculator is set to display fractional values to
the nearest 16th of an inch. 1/64 resolution can be
displayed by pressing [/] with the value in the dis-
play. The fractional resolution of the calculator can
be permanently set by pressing [Conv] [/] with a
clear (zero) display. Repeat presses of the [/] will
then revolve through the available settings: 1/16,
1/32, 1/64, 1/2, 1/4 and 1/8.
KEY DEFINITIONS
FINDING COST OF MATERIALS
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