Door Hardware Height Calculator
Enter your door height and the intended use — and get recommended fitting heights in mm for the handle, mortise lock, three hinges, viewer and bolts, with the accessible RPwD lever band (800–1100mm) flagged. Indicative — confirm with your fitter on site.
Your door
Everyday residential door; lever/handle at a comfortable adult height. Leaf height 2,100mm. Heights are AFFL (above finished floor level) to the centre of each fitting. Hinges: 3 per leaf — top ≈ 175mm from the head, bottom ≈ 250mm from the floor, third at mid-span. Indicative India 2026.
Handle / lever centre height
0mm
8 fittings · Standard adult · lever within RPwD band
Handle
1,000mm
Lock
900mm
mortise centre
Fittings
8
to mark out
Handle / leverRPwD
Lever / handle centre, comfortable grasp height.
Mortise lock
Lock body centre; backset ≈ 60mm from the leaf edge.
Hinge — top
≈ 175mm down from the head.
Hinge — third (mid)
Mid / one-third hinge between top and bottom.
Hinge — bottom
≈ 250mm up from the floor.
Viewer (peephole)
Eye-level peephole on the main door.
Tower bolt — top
Upper securing bolt.
Tower bolt — bottom
Lower securing bolt near the floor.
Marking-out schedule. Indicative — confirm with your carpenter / fitter on site.
Fitting heights — elevation view
Each bar is a fitting's centre height above the finished floor (mm). Reads top-down like a door elevation; terracotta bars sit inside the RPwD lever band.
Mark out hardware right the first time
DesignAI sanity-checks fitting heights against the door type, the users in your home and accessibility needs — so you drill once, not twice.
Go deeper
Assumptions & notes
- All heights are AFFL (above finished floor level) measured to the centre of each fitting, in mm.
- Hinges are 3 per leaf: top ≈ 175mm from the head, bottom ≈ 250mm from the floor, third at mid-span. Heavy or fire doors may need a fourth hinge — follow the door-set certification.
- The handle/lever centre is typically ~900–1050mm; the mortise lock ~900mm with a ~60mm backset; viewers ~1400–1500mm for standard adult use.
- For accessible use, the lever is kept within the RPwD 800–1100mm reach band (Rights of Persons with Disabilities Act 2016 / Harmonised Guidelines). Verify against the latest accessibility code for your project.
- This is a guidance tool, not a substitute for a qualified fitter or site engineer. Heights are indicative — confirm with your carpenter/fitter on site against the door, frame, threshold and the actual users.
- This calculator involves no purchase, so no GST applies; where you buy hardware, prices carry 18% GST.
Related Guides — Deep-dive reading
Marking Out Door Hardware Positions: Set-Out (India 2026)
Standard fitting heights, story rods and templates for setting out hinges, locks, viewers and bolts consistently across an Indian project.
Home Doors & EntrancesFitting Door Hardware: Ironmongery Install Guide India 2026
The new-fit craft of mounting hinges, locks, levers, closers, bolts, stops and seals onto a door and frame — in the right order, at the right heights.
Home Doors & EntrancesDoor Hardware Guide India 2026: Hinges, Handles, Locks, Closers and Every Fitting Explained
What each piece of door hardware actually does, where it belongs, which material (SS304, brass, zinc or iron) survives Indian conditions, the quality signals to check before you pay, and a buyer's checklist with 2026 prices.
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