01
Forward-in
Estimate whether a continuous forward turn can line the vehicle up with the opening.
Free 90° turn estimator
Will your car actually make the turn into the garage?
Model a side-entry garage turn using your vehicle length, width, wheelbase and turning circle. Compare forward-in and reverse-in paths, see modeled clearance, and estimate how much apron or door width you may need.
No sign-upRuns in your browserNo vehicle databaseImperial + metric
Inputs
Your layout
Use manufacturer specs for your vehicle. Generic presets are examples only.
Result
Calculating…
Forward-inReverse-inGreen wall segment = garage opening
What this tool answers
A normal garage-fit calculator asks whether the vehicle fits once parked. GarageTurn asks the harder question: can the whole vehicle envelope sweep through the 90° approach without clipping the opposite driveway edge or the garage corner?
02
Reverse-in
Compare a backed-in path, which can work better for some tight side-entry layouts.
03
What to change
If the path fails, estimate the apron depth or opening width at which the modeled path reaches your chosen safety margin.
Measure before you model
Small errors matter when a layout is tight. Use clear, physical dimensions rather than nominal garage sizes.
Measure the clear garage opening.
Measure between the narrowest fixed edges the body must pass through.
Measure between the narrowest fixed edges the body must pass through.
Measure the apron depth.
Measure perpendicular from the garage face to the opposite hard boundary: curb, wall, fence, landscaping edge or other no-go line.
Measure perpendicular from the garage face to the opposite hard boundary: curb, wall, fence, landscaping edge or other no-go line.
Get real vehicle specs.
Overall length, body width, wheelbase and curb-to-curb turning circle are the most useful inputs for this simplified model.
Overall length, body width, wheelbase and curb-to-curb turning circle are the most useful inputs for this simplified model.
Use a safety margin.
A zero-inch geometric pass is not a comfortable real-world maneuver. Keep a margin for steering variation, tires, slope and measurement error.
A zero-inch geometric pass is not a comfortable real-world maneuver. Keep a margin for steering variation, tires, slope and measurement error.
Need help measuring? Use the GarageTurn measurement guide →
Important limitations
GarageTurn is a planning estimate, not an engineering, architectural or code-compliance service.
Turning circle is an approximation
Published turning diameter does not fully describe steering geometry or body corner sweep. Wheelbase and overhangs help, but a real vehicle can still differ.
Site conditions matter
Slope, curbs, posts, mirrors, gutters, gate hardware, snow banks and driver line can reduce usable space.
Local code is separate
A maneuver can be geometrically possible and still violate local driveway, setback, fire-access or parking rules.
Side-entry garage planning guides
Side-entry garage guide
How apron geometry, door width, vehicle dimensions and turning path interact.
How much apron depth?
Why 20, 24, 25 or 30 feet is not a universal answer—and what to measure instead.
Planning for pickups
Long wheelbases and wide bodies make pickups the stress test for side-entry layouts.
Frequently asked questions
Is a 24-foot apron enough for a side-entry garage?
Sometimes, but there is no universal yes/no answer. Vehicle wheelbase, turning circle, body length, door width and where the hard opposite boundary sits all change the swept path. Use the simulator with your dimensions and keep a real safety margin.
Why does reverse-in sometimes work better?
Backing changes which end of the vehicle leads the maneuver and can change how the body corners sweep around the garage jamb. The benefit depends on the vehicle and layout, so compare both modes.
Should I include mirrors in vehicle width?
Use body width for the main geometry model, then separately verify mirror clearance. Mirrors do not follow the exact body-corner envelope and may fold on some vehicles.
Can I use this for construction drawings?
Use it for early planning and comparison, not as a stamped or guaranteed design. Tight projects should be checked with an on-site vehicle test, scaled CAD swept-path analysis or a qualified designer.