Projector Throw Calculator — multi-brand, multi-aspect

— Calculator · projector throw

Throw distance, visualised.

Search a brand and model, screen aspect and image size. Throw range, lens shift envelope, viewing distance, pixel density and feasibility flags resolve in real time. Sources cited per model.

IndicativeIndicative planning estimate

Throw distance range

3.80 m – 6.07 m

projector → screen

Image size

2.81 m × 1.18 m

2.39:1 · 120″ diag

SMPTE viewing

5.25 m

THX 4.33 m

A planning link — not a quote.

model: Sony VPL-XW7000ES
throw ratio: 1.35 – 2.16 : 1
lens shift: H ±36% · V ±85%
native panel: 3840 × 2160 · 16:9
lumens: 3,200 ANSI
engine: SXRD · Laser
pixel density: 35 PPI · 128 PPD

What changes this estimate

Exact room dimensions & mount position
Screen gain & material
Ambient light through the day
Final projector & lens model

Feasibility

Native 16:9 panel will letterbox the 2.39:1 image — vertical pixels unused unless paired with anamorphic lens or zoom-shift memory.

Source

Verified · officialSony official 4K projector product page

Official product page · reviewed 2026-05-27

A planning link — not a quote.

Quick answer

Projector throw distance is how far the lens must sit from the screen to fill a chosen image size — it equals the image width multiplied by the lens throw ratio. This calculator resolves the throw-distance range across a model's zoom, its lens-shift envelope, the SMPTE/THX viewing distance and pixel density for datasheet-cited projectors. It is a planning reference for shortlisting, not a final design.

When to use
Shortlisting a projector at brief stage and checking it physically fits a room's mount position, screen size and seating.
When not to use
For a direct-view LED video wall (which has no lens or throw distance), size the panel with the LED Wall Size Calculator instead. Final placement always needs drawings and a site review.

Projector throw — full FAQ

· Starting configurations

Typology presets — pick a scenario, see the calculator.

Each preset opens a curated configuration page with the engineering reasoning behind the numbers. Then the calculator loads with the same inputs — change them and the URL stays shareable.

Projector Throw · Home Cinema

Home theatre — 120-inch 16:9 screen, 4 m room

A dedicated home theatre with 4 m of throw distance needs a projector that hits a 120-inch 16:9 screen without zoom at the optical limit.

Open preset

Projector Throw · Corporate AV

Boardroom — 100-inch 16:10 screen, ceiling mount

A corporate boardroom with a 100-inch 16:10 screen and a ceiling-mount throw of 3 m needs a projector specified for daytime ambient lighting.

Open preset

Plan with confidence

From throw geometry to a room that performs

The calculator resolves where the projector sits. These notes turn that into a build-ready plan — what stays fixed, what to confirm on site, and what to send us for a room-specific review.

Planning notes

Throw ratio is a range, not a single number — a zoom lens gives you placement flexibility. Specify the lens envelope before the room is finalised.
Lens shift decides whether a ceiling mount can be discreet or has to sit on the screen's perpendicular axis.
Pixel density per degree (PPD) is more honest than 'native resolution' alone — the calculator surfaces both PPI and PPD.
Lamp vs laser is a lifecycle decision first: plan the room around the mount, which outlives two or three projectors.

Before final installation, confirm

Exact room dimensions and the intended mount position.
Screen gain, material and aspect — matte-white, ALR, or acoustically transparent.
Ambient light through the day; the brightness flag assumes a controlled room.
The final projector and lens against a physical lens/throw test.
Ceiling height, conduit/cable route and a dedicated, surge-protected mains feed.

What to share with us for review

A floor plan with ceiling height and the seating layout.
Ambient-light conditions and any windows or skylights.
Your shortlisted models — or just paste the calculator's share link.
Screen preference, if any (size, gain, acoustically transparent).

Send your floor plan for review

We write back with a projector and screen pairing after drawings, a BOQ or a site review.

Where this connects — services

Pairs with — tools

· Engineering advisory · Projector Throw

What the throw maths actually predicts about the room.

The calculator answers 'where does the projector sit'. The engineering layers underneath — light output, lens choice, mount discipline, screen pairing and lifecycle — turn that answer into a room that performs at year ten the way it performs at handover.

Deployment observations

Throw ratio is not a single number — it is a range across the lens zoom. The Sony VPL-XW7000ES at 1.35-2.16 gives a 4.6m room real placement flexibility for a 130″ screen; a fixed-throw UST gives one (precise) answer. Specify the lens envelope before the room is finalised, not after; retrofitting a longer-throw projector into a closet that was sized for a UST is expensive.
Lens shift is the most under-appreciated optical specification. A premium SXRD/D-ILA with ±100% vertical shift can ceiling-mount well above the screen centre without geometric distortion; an entry-level 4K projector with 0% shift forces the mount onto the screen's perpendicular axis or accepts digital keystone correction (which throws away pixels). The lens-shift envelope determines whether a ceiling-mounted projector can be discreet or visually intrusive.
Pixel density per degree is more honest than 'native resolution' alone. At the SMPTE 30° viewing distance, a 4K projector resolves roughly twice the PPD of a pixel-shifted 1080p projector on the same screen. For a 130″+ screen at <5m viewing distance, native 4K is audible (visible) on bright scenes; below 100″ at 4m+, the delta narrows. The calculator surfaces both PPI and PPD so the choice is informed.

Operational notes

Screen pairing is half the picture. A 3000-lumen projector on a unity-gain matte-white screen in a treated dark room looks reference-grade. The same projector on a 1.2-gain ALR screen in a living room with controlled lighting is also reference-grade. The same projector in an untreated bright kitchen looks washed out at any size. The calculator's brightness warning surfaces the failure mode before the install.
Lamp vs laser is a lifecycle decision before it is anything else. A 4,000-hour lamp at one viewing hour per day exhausts in 11 years; a 20,000-hour laser engine at the same usage lasts to 55 years. For frequently-used home cinemas the laser engine outlives several lamp cycles, which is what makes it the durable choice.

Lifecycle implications

Refresh cadence by light source: lamp projectors refresh on lamp replacement (lamp replacement plus filter service, typical 4-5 year cycle). Laser-phosphor projectors run 20,000 hours to 50% brightness — at 3 hours/day that's an 18-year curve. Tri-laser RGB engines hold colour gamut longer than laser-phosphor. The calculator flags the light-source type so the lifecycle expectation is set at brief stage.
Mount infrastructure outlives every projector. A solid ceiling mount, conduit-run HDMI/fibre cable, and a dedicated mains feed with surge protection are 20+ year decisions. The projector itself refreshes 2-3 times across that infrastructure lifetime; plan the room around the mount, not the unit.

· Why it matters

A throw calculator that quotes a single distance for a zoom lens is wrong. A calculator that ignores lens-shift envelope sends mounts to the wrong axis. A calculator that ignores ambient light leaves owners disappointed at handover. This one carries the throw range, the shift envelope, the SMPTE viewing recommendation, the pixel density honesty and a feasibility flag — all per a verified-sourced projector spec. 15 brands · 51 verified models · sources cited per model · last verified 2026.

· Frequently asked

Projector throw —
what people ask first.

Why does throw distance show a range instead of a single number?

Because most projector lenses zoom. A Sony VPL-XW7000ES at 1.35-2.16 throw ratio can place a 130″ image anywhere between roughly 3.9m and 6.3m of throw distance. A single-number calculator hides that flexibility and forces an early mount-position decision that may not match the room. Fixed-lens and UST projectors do return a single distance — that's correct for those lenses.

How accurate is the projector database?

Every model carries a citation to the official manufacturer datasheet or product page plus the date that spec was last verified, and a confidence grade. If we can't cite a primary source, the model doesn't enter the database. The calculator currently carries verified data for 51 models across 15 brands. We re-verify on editorial passes and bump the retrieved date.

What if my projector isn't in the list?

Open the projector picker and choose “not listed” — you can enter the throw-ratio range straight from your datasheet and still get the throw geometry. Send us the model name and datasheet URL via the contact form and we add it as a verified, source-cited record in the next editorial batch.

Does the calculator handle anamorphic lenses?

Not in v1. The 2.39 and 2.40 aspect ratios in the dropdown apply to projecting wider images on a 16:9 panel using letterboxing (vertical pixel area unused) or zoom-shift memory. True anamorphic-lens math (where a horizontal lens stretches the image and reclaims the letterbox area) is a v2 feature.

How is the SMPTE/THX viewing distance calculated?

SMPTE recommends a horizontal viewing angle of 30° for cinematic content; THX recommends 36°. Viewing distance = image width ÷ (2 × tan(angle/2)). For a 2.7m wide screen the SMPTE distance lands around 5.0m and THX around 4.2m. Both are surfaced because rooms typically constrain you to one or the other.

· Begin

Building a cinema
or boardroom?

The calculator answers the placement question. The room, screen, mount, audio chain and integration are the conversation. Send the floor plate and we will write back within two working days with a projector and screen pairing matched to the room.

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Throw distance, visualised.

Typology presets — pick a scenario, see the calculator.

Home theatre — 120-inch 16:9 screen, 4 m room

Boardroom — 100-inch 16:10 screen, ceiling mount

From throw geometry to a room that performs

What the throw maths actually predicts about the room.

Deployment observations

Operational notes

Lifecycle implications

Projector throw —
what people ask first.

Building a cinema
or boardroom?

Projector brands and models supported

Supported screen aspect ratios

Projector Throw Calculator — Engineering-grade, Multi-brand, Multi-aspect

Typology presets — pick a scenario, see the calculator.

Home theatre — 120-inch 16:9 screen, 4 m room

Boardroom — 100-inch 16:10 screen, ceiling mount

From throw geometry to a room that performs

What the throw maths actually predicts about the room.

Deployment observations

Operational notes

Lifecycle implications

Projector throw —what people ask first.

Building a cinemaor boardroom?

Projector throw —
what people ask first.

Building a cinema
or boardroom?