# Using the Calculator palette

## Video: Using the Calculator palette

When it comes to the calculator, AutoCAD gives us a choice as to how we'd like to use it. We can access it through the command line, or we can use the dedicated Calculator palette. The palette version gives us a nice intuitive interface that can make our calculations a little more visual. In this lesson, we're going to learn how to use the Calculator palette, otherwise known as the QuickCalc Tool. First of all, the Calculator palette can be used as a standalone feature. Anytime you need to solve an equation, you can simply press Ctrl+8 to access the palette.

## Using the Calculator palette

When it comes to the calculator, AutoCAD gives us a choice as to how we'd like to use it. We can access it through the command line, or we can use the dedicated Calculator palette. The palette version gives us a nice intuitive interface that can make our calculations a little more visual. In this lesson, we're going to learn how to use the Calculator palette, otherwise known as the QuickCalc Tool. First of all, the Calculator palette can be used as a standalone feature. Anytime you need to solve an equation, you can simply press Ctrl+8 to access the palette.

Now my calculator is coming up in a collapsed state. If you click the More Than button, you can expand the tool to see the rest of the functions. I can enter an equation up here in the Expression area by clicking on these buttons. I can also use the numeric keys on my keyboard. If I press the Equals button, I can see the result of my calculation. If I move down here and maximize the Scientific group, you can see that we have some scientific functionality as well. I'm going to move up and click the X to close this.

Now the nicest thing about the Calculator palette is that we can use it within an active command. For instance, on my screen I have a polygon. Let's re-create this geometry. I'll open the Draw panel and I'll launch the Polygon command. Since I'm drawing an octagon, I will use 8 for the number of sides and press Enter. I will click to define my center point. Since I know the distance from edge-to-edge, this must be a circumscribed polygon. Now what's my radius? Well, I know the diameter is 25.553.

The radius must be half of that. So I'm going to press Ctrl+8 to bring up the calculator. As you can see, whatever value I come up with, AutoCAD is going to apply it to the active command. I'll type 25.553/2=, there is my value. I'll click Apply. AutoCAD dumps that value at the command line. I will then press Enter to accept it. Now let's say I'd like to create a hexagon at the center of this shape,and I would like the hexagon to be half the size of the original polygon.

I'm going to press the Spacebar to re-launch the Polygon command. My number of sides will be 6. The center point is going to be Shift+Right-Click. I'll select Mid Between 2 Points. I'll select the endpoint here and the endpoint here to find the center of that polygon. It's going to be circumscribed. Now what's my radius going to be? I'll press Ctrl+8 to bring back the calculator. Take a look at this area up here. This is the history.

I can steal values from the history. If I double-click on a solution, I can move that value into the expression area. I can do the same thing with the equations. Since my new polygon is going to be half the size of the last one, I'm going to double-click to steal this equation, and I'll change this to divided by 4. I'll press Equals, I'll click Apply, and then I'll press Enter to accept the value. Now just like with the Command Prompt Calculator, we also have some predefined functions.

For instance, I'm going to pan this over. On my screen, I have a circle that's been offset. Let's say I'd like to offset this arc the same distance as these circles. I'll launch the Offset command and for my distance I'll press Ctrl+8. I will then move up and click this icon. This will find the Distance Between Two Points. Note that I didn't say endpoints. This will find the distance between any two object snaps in the drawing.

I'm going to Shift+Right-Click and select Quadrant here, and I'll select the quadrant here to define my distance. I will then click Apply and Enter to accept that value. I will then click my arc and I'll choose a side. Now maybe I'd like to create a center line between these two arcs. I'll press my Spacebar to re-launch Offset. For my distance, I'll press Ctrl+8. I'm going to double-click to steal the previous solution.

I'll type divided by 2. I'll click Apply. Enter to accept the value. I'll click my arc and I'll offset it to this side. Let's pan this over and we'll try something else. On my screen, I have a Polyline that represents a portion of the back of curb for proposed parking lot. Typically, you'll see curb shown as three parallel lines. You'll have the back of curb. Let's launch the Offset command and I'll set this to .5.

I'll offset this out to create a flow line of the curb. I'm going to re-launch Offset and I'll change my distance to 1.5 and I'll offset the back of curb out to define the edge of pavement. All right, let's round a couple of these corners. I'll launch the Fillet command. I'll right-click to access the Radius option and I'm going to use a back of curb radius of 5 feet. I will then select this edge and this one around the corner.

I'll press the Spacebar to re-launch Fillet and I'll grab these two edges. Now that we've constructed some geometry, I'm going to press Ctrl+8 to access the calculator in a standalone state. I'm going to grab the bottom of the palette and I'll drag this down. Then I'm going to click to minimize some of these areas and I'll expand the Variables group. Notice that we have some of the same variables that we can use with the Command Prompt Calculator. We can even make our own. Now there is no magic to these.

Essentially, these are just shortcuts that type values in the Expression area. I'm going to click the New icon. This is going to be a function. A function is just a saved equation, whereas a constant would be a saved numeric value. I'll call this variable cg_flowline. AutoCAD does not allow spaces in the variable names. Now where would I like to save this variable? Right now, it's going to go into the same Sample Variables group that we see here.

If I click the flyout, I can create my own group to save my custom variables. But right now I'll accept the default and we'll save this in the Sample group. My expression is going to be rad+.5, because the flowline radius will always be equal to the back of curb radius+.5. I'll click OK. As you can see, I have a new variable. Let's create one more. I'll click the New icon. I'm going to call this one cg_eop for edge of pavement.

My expression is going to be rad+1.5, because the edge of pavement is always going to be equal to the back of curb radius+1.5. I'll click OK. All right, let's close the Calculator, and we'll try these two variables. Let's start by filleting these edges that represent the flowline of the curb. I'll launch the Fillet command. I'll right-click and select Radius. For my radius, I'll press Ctrl+ 8 to bring up the Calculator.

I'll click to put the focus in the Variables area and then I'll double-click on the flowline variable. As you can see, no magic. AutoCAD simply enters that equation in the Expression area. Once again, no magic, AutoCAD is simply entering the equation up here in the Expression area. I'll click Apply. I will then select my back of curb radius and I'll press Enter to accept the calculated radius and I'll select my two edges. I'll press the Spacebar to go back into the Fillet command.

AutoCAD remembers the previous value. So I'll select these two edges. Let's do the last two. I'll press the Spacebar to go back into Fillet. I'll right-click. Select Radius. What's my fillet radius? I'll press Ctrl+8. I'll click to put the focus in the Variables area. I'll double-click on the edge of pavement variable. I'll click Apply. I will then select my back of curb radius. Press Enter to accept the calculated value and I'll grab my two edges.

I will then reenter Fillet and grab the remaining two edges. I'd like to show you one more thing. If you're an architect, the Calculator palette is a great tool for performing calculations using fractional measurements. If you'll indulge me for one second, I'm going to open the application menu. I'll come down to Drawing Utilities and I'm going to change my Units to Architectural. I'll change my Insertion scale to Inches and I'll click OK. Now that this is set to Architectural, I'll press Ctrl+8 to open the calculator.

I'll grab the slider and drag up. It'll expand the number pad,and I'll enter my first measurement. I'm going to do this at the keyboard. It might be a little easier. 4'5-3/8". Notice that I'm entering the value the same way I would enter it if I was creating some geometry. I will then press my Spacebar twice. I'll click Plus, and then I'll press the Spacebar two more times, and I'll enter my next measurement, 7'2-9/16".

Having the extra spaces before and after your operator helps AutoCAD understand which symbols are part of a measurement and which ones are to be used for calculations. I'm going to click the Equals button to see the sum of the two measurements. I'm sure you'll agree that AutoCAD's calculator is a very powerful tool. If you would like to find out more about the calculator functions, simply press Ctrl+8 to access the calculator and click this Help icon. If you can master this tool, you can save a significant amount of time off your workday.

Show transcript

#### This video is part of

AutoCAD: Tips, Tricks, and Industry Secrets

66 video lessons · 8253 viewers

Author

Expand all | Collapse all
1. ### Introduction

1m 28s
1. Welcome
53s
2. Using the exercise files
35s
2. ### 1. Interface

47m 11s
1. Adding relevant data to Quick Properties and tooltips
5m 38s
2. Creating custom ribbon tabs and panels
8m 55s
3. Creating macro-enabled tools
10m 29s
4. Increasing speed with command aliases
4m 44s
5. Finding commands and system variables using Auto Complete
2m 35s
6. Optimizing the size of palettes
3m 17s
7. Accessing drawings using Favorites
2m 25s
2m 24s
9. Restoring hidden messages
3m 53s
10. Following a blog from within AutoCAD
2m 51s
3. ### 2. Drawing Tools

1h 0m
1. Disabling mode settings on the fly
3m 28s
2. Finding hatch boundaries in busy drawings
3m 32s
3. Generating boundaries from difficult shapes
2m 20s
4. Calculating the overall length of multiple entities
6m 16s
5. Calculating the area of multiple shapes
4m 42s
6. Flattening geometry to a single elevation
4m 0s
7. Trimming all entities to one side of an object
2m 42s
8. Eliminating duplicated geometry
5m 10s
9. Creating true offsets
3m 44s
10. Finding errors when joining multiple entities
6m 48s
11. Moving and copying entities using Windows shortcuts
2m 24s
12. Solving expressions using the command prompt calculator
5m 1s
13. Using the Calculator palette
10m 25s
4. ### 3. Text

21m 17s
1. Bringing all text objects to the front
1m 20s
2. Underlining single-line text
1m 21s
3. Managing numbered and lettered lists
3m 36s
4. Creating superscript and subscript text
3m 18s
5. Removing formatting from MTEXT
3m 26s
6. Using fields to identify who revised a drawing
3m 10s
7. Squeezing text into tight spaces
3m 5s
8. Hiding extra annotative scales
2m 1s
5. ### 4. Dimensions

16m 55s
1. Creating "one-click" dimensions
1m 52s
2. Dimensioning angles greater than 180 degrees
1m 40s
3. Creating dynamic dimension breaks
2m 20s
4. Making linear dimensions act like aligned dimensions
2m 44s
5. Finding dimensions with false values
1m 38s
6. Creating parent/child dimension styles
4m 45s
7. Making dimensions easier to read
1m 56s
6. ### 5. Blocks and References

14m 40s
1. Making global edits to attribute data
4m 1s
2. Clipping references using curved geometry
2m 21s
3. Exchanging one block symbol for another
3m 3s
4. Using drag-and-drop to insert content
3m 17s
5. Creating a block library in two clicks
1m 58s
7. ### 6. Layers

10m 42s
1. Making global changes to layer names
3m 19s
2. Converting all object properties to BYLAYER
1m 43s
3. Navigating layer lists using the keyboard
2m 5s
4. Producing a hard copy of the layer settings
1m 34s
5. Removing stubborn layers
2m 1s
8. ### 7. Layouts

25m 1s
1. Accessing viewports within viewports
3m 21s
2. Creating viewports with islands
6m 5s
3. Creating legends using the Change Space tool
3m 55s
4. Rotating viewport content to match layout
4m 55s
5. Importing layouts from template files
2m 3s
6. Visualizing multiple design alternates
4m 42s
9. ### 8. Miscellaneous Tools

30m 18s
1. Consolidating backup files into a single folder
2m 48s
2. Launching applications from within AutoCAD
3m 53s
3. Creating custom linetypes
5m 9s
4. Incorporating symbols into custom linetypes
2m 48s
5. Salvaging data from a corrupt drawing
3m 57s
6. Applying hyperlinks to drawing objects
3m 34s
7. Converting drawings from name-based to color-based plot styles
2m 0s
8. Identifying the owner of a drawing
1m 18s
9. Incorporating drawings into PowerPoint presentations
4m 51s

31s
1. Goodbye
31s

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