How much space does a door swing need?

A hinged door sweeps a quarter circle whose radius equals the door leaf width. A 32 inch door needs a 32 inch radius of clear floor from its hinge, across the full swing angle.

Can furniture sit partly inside a door swing?

Yes, and it is sometimes acceptable. What matters is how far the door can travel before it touches. This calculator reports the angle at which contact happens, so you can decide whether a partly opening door is workable.

Does the hinge side matter?

It decides which jamb the arc is centred on. The same item can be entirely clear on one hinge side and blocking on the other, even though the door width is unchanged.

Does this piece block the door?

The door leaf sweeps an arc the width of the door. This checks one item's footprint against that arc and reports the angle where they touch. No sign-up, nothing sent anywhere.

The wall and the door

Positions are measured along the door wall from its left corner, and into the room from that wall.

Door wall length

Room depth

Door width

Near jamb from corner

Hinge side

Swing direction

Swing angle

The item

Item name

Item width

Item depth

Left edge from corner

Distance from door wall

Result

Blocked

Contact

24.5 in into the arc

Dresser occupies the arc from 7.13° to 90° of the 90° sweep, reaching 24.5 in inside the 25 in radius.

Opens to

7.13° of 90°

The door stops at 7.13° — 82.87° short of 90° — because Dresser is in the way by 24.5 in.

Hinge geometry

Arc origin

Hinge at 113 + 25 = 138 in from the corner; the leaf sweeps a 25 in radius inward.

These results are arithmetic on the numbers you entered — nothing is measured for you and nothing here is a guarantee that an item will fit. Delivery paths are not checked: stairs, hallways, lifts and doorway routes can stop an item that fits the room perfectly. Door stops, thresholds, handles and skirting are not modelled; the arc is the bare leaf.

Common questions

How much space does a door swing need?: A hinged door sweeps a quarter circle whose radius equals the door leaf width. A 32 inch door needs a 32 inch radius of clear floor from its hinge, across the full swing angle.
Can furniture sit partly inside a door swing?: Yes, and it is sometimes acceptable. What matters is how far the door can travel before it touches. This calculator reports the angle at which contact happens, so you can decide whether a partly opening door is workable.
Does the hinge side matter?: It decides which jamb the arc is centred on. The same item can be entirely clear on one hinge side and blocking on the other, even though the door width is unchanged.

What this did not check

This page only did the arithmetic above. It did not look at:

Any second item — only the one footprint you entered is tested against the arc.
The walkway left once the door is open, or whether a person can pass the item while it stands there.
Handles, door stops, thresholds, skirting and hinge projection, all of which shrink real clearance.
The delivery path — stairs, hallways, lifts, turns and doorway routes are not measured here, and they stop more purchases than room size does.