Measure once.See whether the arm actually fits the desk you own.
One useful answer
A boom arm fits only when its clamp can seat on the desk, its joints can reach the microphone, its route clears the monitor and its spring range supports the complete microphone system.
Measured fit planner
Map the desk. Test the arm.
Start with published arm specifications and your own measurements. Every result shows what passed, what failed and what still needs a human check.
Your measurements stay in this browser.
Measurements
Build your setup
ABC
Before you type
Measure the exact mounting spot.
A · Thickness includes anything inside the clamp opening.
B · Flat contact is the usable underside surface, not the decorative edge.
C · Apron setback starts at the desk edge and ends at the first obstruction.
01Desk + clamp location60.0 in × 30.0 in
Mounting edge
02Microphone positionsActive + parked
X is measured from the desk’s left edge. Y is measured from its front edge. Height is above the desktop.
Active speaking position
Parked position
03Arm specifications1 of 3 candidates
Use the manufacturer’s current specification page or manual. Reach conventions vary, so enter segment lengths when available.
Detailed arm geometry
04Microphone system1.16 lb
05Monitor + obstacles1 entered
Add the monitor footprint or another no-go rectangle. Up to three obstacles can be modeled.
Fit drawings
See the geometry behind the verdict.
These scaled planning views make hidden conflicts easier to spot. They do not reproduce a manufacturer’s full joint constraints.
Top viewReach + obstacle routing
The route uses the entered segment lengths and chooses the elbow direction with fewer monitor conflicts.
Side viewHeight + clamp stack
Side view is a planning model, not a joint-angle guarantee. Compare the manufacturer’s hinge limits before purchase.
BoomArmFitMeasured fit report
Podcast desk
Partial fit
Arm A · 73/100 modeled score
✓ClampClamp dimensions fit
!Active reachThe target sits near full extension
✓Monitor pathA modeled route clears the monitor
✓PayloadMicrophone load is inside the range
×Parked positionThe planned parked point is out of reach
Desk: 60.0 in × 30.0 in × 1.3 in
Active reach: 31.1 in · System weight: 1.16 lb
Planning estimate based on user-entered measurements. Confirm the manufacturer’s current specifications and mounting instructions before purchase or installation. boomarmfit.com
A five-part fit, not a sales claim
What the calculator is actually testing.
Each check stays visible so a passing payload cannot hide a failing clamp—or a long reach cannot hide a monitor collision.
01
Clamp seat
Opening, flat pad contact, edge profile and underside obstructions.
02
Active reach
Horizontal target distance, entered height and segment-length reserve.
03
Monitor path
A two-segment top-view route against the monitor footprint and height.
04
Payload
The complete microphone system against the published minimum and maximum.
05
Parked position
Whether the arm can move away without exceeding reach or crossing a no-go zone.
Product pages compress a three-dimensional installation into a few optimistic specifications. These are the details most likely to break the plan.
01
The clamp opens wide—but cannot reach past the apron.
Opening and throat depth solve different problems. Measure both.
02
The arm reaches the mic—but only through the monitor.
A published reach number says nothing about the usable route.
03
The microphone fits—but the shock mount pushes it over.
Payload is the operating system, not the microphone body alone.
Measurement desk
Common boom-arm fit questions.
Short answers first, with the terms the calculator uses.
How do I know whether a boom arm clamp will fit my desk?
Measure the full desk thickness at the exact clamp location, the flat underside contact area and any apron, rail, lip or cable tray inside the clamp path. Compare those measurements with the arm’s maximum clamp opening and throat depth.
Does microphone weight include the shock mount?
Yes. Use the combined operating weight of the microphone, shock mount, thread adapter, pop filter and any accessory the arm must hold. Include meaningful cable pull if the cable is stiff or tightly routed.
What is clamp throat depth?
Clamp throat depth is how far the lower clamp pad or screw assembly reaches inward from the desk edge. It matters when an apron or rail sits close to the edge.
Can a microphone boom arm clear a monitor?
Sometimes. A high-rise arm may pass above a display while a low-profile arm may pass below or around it. BoomArmFit models the top-view route and uses the entered heights to flag routes that still need a physical check.
Is the result a guarantee that an arm will fit?
No. It is a planning estimate based on the measurements and published specifications you enter. Joint limits, pad shapes, cable routing and product revisions can change the real installation.
Are my measurements uploaded?
No. Calculations, saved setups and shared-link encoding happen in your browser. A shared link contains the setup values in the URL so the recipient can reproduce the plan.