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Door Size/Width Calculators

Clear Effective Width Calculator

Please enter the internal doors width size for the required clear effective opening and follow the below steps.

  1. Door Size (Width): This is the basic door width.

  2. Tolerances: These might be allowances for manufacturing, fitting, or clearance. It’s a reduction in the clear width.

  3. Door Thickness: This affects the clear width when the door swings into the path of travel.

  4. Projections: This could be anything that protrudes into the door’s clear opening, like door handles, push plates, etc.

  5. Rebate/Stop Size: In certain door configurations, especially double doors, the stop or rebate might reduce the clear width.

  6. Hinge Knuckle: This might project into the door opening depending on the type of hinge and how it’s installed.

Internal Door Size Calculator

Please enter the required clear effective opening you need to achieve and follow the below steps.

  1. ECW (Effective Clear Width): This is the unobstructed width you want to achieve.
  2. Width Tolerance: Clearance allowances or tolerances for fitting, thermal expansion, etc.
  3. Door Thickness: Affects the clear width when the door swings into the path of travel.
  4. Rebate/Stop Size: Reduction in clear width in certain door configurations.
  5. Hinge Knuckle: This might project into the door opening depending on hinge type and its installation.
  6. Handle Projection: The projection of the handle into the door opening.