Bathroom Mirror Size Calculator
Calculate the perfect mirror size for your bathroom vanity with professional design guidelines and proportions
Mirror Size Calculator
The horizontal width of your bathroom vanity
The vertical height of your bathroom vanity
The height from floor to ceiling in your bathroom
Mirror Size Results
Design Rule: Mirror should be 4-6 inches narrower than vanity width
Height calculation: Ceiling height - (Vanity height + 12 inches clearance)
Example Calculation
Standard Vanity Example
Vanity: 36" wide × 36" high
Ceiling: 96" (8 feet) high
Mirror Type: Rectangular
Calculation
Width = 36" - 4" = 32" wide
Height = 96" - (36" + 12") = 48" tall
Result: 32" × 48" mirror
Design Guidelines
Width Rule
Mirror should be 4-6 inches narrower than vanity width
Height Placement
6-10 inches above vanity, 6 inches below ceiling
Lighting Clearance
Ensure lights are above mirror level or integrate into design
Visual Balance
Taller mirrors make rooms appear larger and more open
Mirror Type Guide
Rectangular
Best for most vanities, provides maximum reflection area
Circular
Great for smaller spaces, adds visual interest and softness
Double Vanity
Two mirrors for wide vanities, each person gets their own reflection
Installation Tips
Find wall studs for secure mounting of heavy mirrors
Measure twice, mark lightly before drilling
Consider integrated LED lighting for modern look
Use appropriate anchors for your wall type
Understanding Bathroom Mirror Sizing
Professional Design Rules
The right bathroom mirror size is crucial for both functionality and aesthetics. Our calculator follows professional interior design guidelines to ensure your mirror enhances your bathroom's appearance.
Width Guidelines
- • Single vanity: Vanity width - 4 inches
- • Double vanity: (Vanity width - 8 inches) ÷ 2 per mirror
- • Never wider than the vanity itself
Height Calculation
Formula: Ceiling height - (Vanity height + 12 inches)
This ensures 6-10 inches above vanity and 6 inches below ceiling.
Common Vanity Sizes & Results
24" Vanity (Small)
Mirror: 20" wide
Best type: Circular (20" diameter)
36" Vanity (Standard)
Mirror: 32" wide
Best type: Rectangular
60" Vanity (Double)
Mirrors: Two 26" wide mirrors
Spacing: 2" from edges, 4" between