Benq W5700 Distance Calculator

Use this interactive throw distance calculator to estimate the ideal mounting range for the BenQ W5700 projector. Enter your screen size, aspect ratio, and room preferences to see the minimum and maximum placement distance based on the W5700 throw ratio.

Projection Inputs

Distance Visualization

The chart compares screen width with the estimated minimum, midpoint, and maximum throw distances for the BenQ W5700 using a throw ratio range of approximately 1.36 to 2.18.

Tip: Projector distance is measured from the projector lens to the screen surface, not from the back of the projector chassis.

Expert Guide to Using a BenQ W5700 Distance Calculator

The BenQ W5700 is a premium 4K home theater projector designed for dedicated cinema rooms and enthusiast-grade installations. If you are shopping for this model, planning a ceiling mount, or comparing it against room dimensions before purchase, a BenQ W5700 distance calculator is one of the most useful planning tools you can use. Throw distance determines whether the projector can create the image size you want from the physical position available in your room. In simple terms, it answers one of the biggest installation questions: how far from the screen should the projector be placed?

For the W5700, throw distance depends mainly on screen width, because projector optics are defined by throw ratio. A throw ratio expresses how many units of distance are needed for each unit of image width. The BenQ W5700 is commonly listed with a throw ratio around 1.36 to 2.18, which means that for every 1 foot of screen width, the projector lens should typically sit between 1.36 feet and 2.18 feet away from the screen. The result is a flexible zoom range that supports several room layouts, but only if you calculate properly before installation.

Why throw distance matters so much

Many buyers focus on resolution, HDR support, color accuracy, and brightness, but distance planning is just as important. If the projector cannot physically sit in the right range, the image may be too small or too large for your screen. You may also run into issues with ceiling joists, rear wall space, seating positions, or cable routing. Using a dedicated calculator removes guesswork and lets you confidently determine whether the room will accommodate the W5700 before drilling a mount or buying a screen.

• Screen fit: Confirms whether your chosen diagonal size works with the projector.
• Mount planning: Helps locate a ceiling mount or shelf mount correctly.
• Room validation: Shows whether the projector can fit after leaving space for ventilation and connectors.
• Zoom flexibility: Gives you a minimum and maximum distance, not just one fixed point.
• Upgrade confidence: Useful when replacing an older projector with different optics.

How this calculator works

This BenQ W5700 distance calculator starts with your screen diagonal and aspect ratio. From there, it converts the diagonal into a real screen width using geometry. Once the image width is known, the tool applies the W5700 throw ratio range to produce a minimum and maximum lens-to-screen distance. The midpoint is also shown to give you a practical target if you want room to fine-tune zoom during installation.

The underlying sequence looks like this:

1. Take the screen diagonal in inches.
2. Use the selected aspect ratio to calculate image width and height.
3. Convert width into feet and meters.
4. Multiply width by the minimum throw ratio, approximately 1.36.
5. Multiply width by the maximum throw ratio, approximately 2.18.
6. Compare the result with the room depth after subtracting your reserved installation clearance.

This method reflects how projector setup is typically planned in real home theater installations. It is much more reliable than simply estimating based on a screen diagonal alone, because different aspect ratios create very different widths even at the same diagonal measurement.

BenQ W5700 projection statistics and planning benchmarks

Below is a practical reference table using the W5700 throw ratio range of 1.36 to 2.18. These numbers are rounded and intended as planning estimates for common 16:9 screen sizes.

16:9 Screen Size	Image Width	Min Distance	Max Distance	Midpoint
100 in	87.2 in	9.9 ft	15.8 ft	12.8 ft
110 in	95.9 in	10.9 ft	17.4 ft	14.1 ft
120 in	104.6 in	11.9 ft	19.0 ft	15.4 ft
135 in	117.7 in	13.3 ft	21.4 ft	17.4 ft
150 in	130.7 in	14.8 ft	23.7 ft	19.2 ft

As you can see, the screen width matters more than the diagonal label itself. A 120 inch 16:9 image is approximately 104.6 inches wide, and that width drives the actual placement range. If your room depth is 16 feet, for example, a 120 inch 16:9 screen is very workable with the W5700, but it leaves far less flexibility at the long end of the zoom range once mount depth and rear clearance are considered.

How aspect ratio changes your distance requirement

One common mistake is assuming that every 120 inch screen needs the same throw distance. That is not true. A 120 inch 2.35:1 CinemaScope screen is much wider than a 120 inch 16:9 screen, so the projector must sit farther back. This is why any serious BenQ W5700 distance calculator should let you choose the aspect ratio rather than relying on a single preset.

120 in Diagonal Format	Width	Height	Min Distance at 1.36	Max Distance at 2.18
16:9	104.6 in	58.8 in	11.9 ft	19.0 ft
16:10	101.7 in	63.6 in	11.5 ft	18.5 ft
2.35:1	110.7 in	47.1 in	12.6 ft	20.1 ft
4:3	96.0 in	72.0 in	10.9 ft	17.4 ft

This is particularly important if your home theater uses an acoustically transparent screen wall, a projector hush box, or a custom rear shelf. In these installations, even a foot of difference can determine whether a design works cleanly or becomes difficult to execute.

Room design considerations beyond simple throw distance

Although the calculator focuses on throw range, smart projector planning involves more than optics alone. You should also think about lens shift, vertical and horizontal alignment, ventilation requirements, ceiling height, mount drop, and the location of your seating rows. The BenQ W5700 is intended for enthusiast installations, so users often pair it with dedicated dark-room layouts where precision matters.

• Lens-to-screen measurement: Always measure from the lens, not the back panel.
• Ventilation: Leave enough free space around the projector body for airflow.
• Mount hardware: Ceiling mounts add some extra length and positioning constraints.
• Cable management: HDMI routing, power placement, and control cabling can influence final mount points.
• Seating geometry: Larger screens improve immersion, but should still match your viewing distance and room width.

How to choose the best screen size for your room

If you are not yet committed to a screen size, a throw distance calculator becomes a decision-making tool rather than just a validation tool. Start with your room depth and subtract any practical installation clearance. Then compare that usable depth against the W5700 throw range for multiple screen sizes. This lets you determine whether you should target 100 inches, 120 inches, 135 inches, or another size.

A useful decision process looks like this:

1. Measure the full room depth.
2. Subtract space for a rear wall gap, mount body, and cable bend radius.
3. Enter a candidate screen diagonal and aspect ratio into the calculator.
4. Confirm the minimum and maximum distance range fits your room.
5. Choose a mount point near the midpoint if possible for future flexibility.

Placing the projector near the midpoint of its zoom range is often ideal because it gives you some flexibility to fine-tune focus, image size, or future screen changes. If you mount at the extreme short or extreme long end, you lose that flexibility and may be more sensitive to slight measurement errors.

Real-world installation example

Imagine a dedicated media room that is 18 feet deep. You want a 120 inch 16:9 screen and plan to reserve 1.5 feet for rear ventilation, connectors, and mount hardware. That leaves 16.5 feet of effective placement depth. A 120 inch 16:9 screen generally calls for approximately 11.9 to 19.0 feet with the W5700, so the installation is viable. In fact, a mount point near 15.4 feet is close to the middle of the zoom range and gives you room to adjust. In contrast, if the room were only 13 feet deep after clearance, the same screen would still work, but only near the short end of the zoom range, reducing flexibility.

How this compares with generic projector calculators

Generic calculators can be helpful, but model-specific tools are better. The BenQ W5700 has its own optical characteristics, and using the wrong throw ratio will generate incorrect placement recommendations. A difference of even a few tenths in throw ratio can shift your recommended mount position by more than a foot on large screens. For expensive projector installations, that can lead to unnecessary rework, poor aesthetics, or image fit issues.

That is why this page focuses specifically on the BenQ W5700. Instead of a one-size-fits-all formula, it centers calculations around the W5700 throw range and the practical realities of home theater planning.

Helpful external references for planning

If you want to go deeper on projection environments, display geometry, and measurement standards, the following resources are useful starting points:

• NIST unit conversion guidance for confirming inch, foot, and meter conversions during room planning.
• U.S. National Archives projection guidance for broader background on projection practices and equipment handling.
• Penn State educational material on field of view and display geometry for understanding how screen size relates to immersion and viewing conditions.

Common mistakes to avoid

• Measuring to the back of the projector instead of the lens.
• Ignoring aspect ratio when converting diagonal size to width.
• Forgetting to subtract rear clearance, mount depth, or shelf thickness.
• Using a generic throw ratio from a different projector model.
• Choosing a screen size before confirming the installation range actually fits the room.

Final takeaways

A BenQ W5700 distance calculator is essential for anyone trying to build a polished, professional-quality home theater around this projector. It converts vague ideas into concrete numbers and helps answer the practical questions that matter during installation. If you know your screen diagonal, aspect ratio, room depth, and desired installation clearance, you can quickly determine whether the W5700 will fit your room and where it should ideally be mounted.

The most important lesson is simple: do not plan around screen diagonal alone. Always calculate image width, apply the projector’s throw ratio, and compare the result against your usable room depth. When you do that, your projector, screen, and seating plan are much more likely to work together smoothly the first time.

Disclaimer: Calculations on this page are planning estimates based on a BenQ W5700 throw ratio range of approximately 1.36 to 2.18. Final installation should be confirmed against the official product manual and on-site measurements.