Free browser utility
Cabinet Door Size Calculator
Enter an opening, overlay or reveal, door gap and single/pair configuration to calculate finished door size.
✓ Local processing✓ No registration✓ No file upload
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Before
Opening: 30 × 24 in, pair doors
→
After
Two 15.4375 × 25 in doors
How to use Cabinet Door Size Calculator
- Enter measurements and select the assumptions that match the project.
- Run the calculation and review the main result.
- Read the intermediate values, formula notes and warnings.
- Copy or download the estimate before changing the inputs.
Privacy and local processing
This project performs processing, document generation or calculations in your browser. The page does not include an upload endpoint, analytics script or remote processing API call. Avoid pasting sensitive data into websites you do not control.
Formula or method
Door width = opening width + left overlay + right overlay − center gap, divided by the number of doors.
What this tool includes
- instant local calculation
- clear assumptions and intermediate values
- copyable material estimate
Common uses
- project planning
- material purchasing
- quote preparation
Practical tips
- Measure the real installation area rather than relying only on nominal dimensions.
- Round purchase quantities up and verify manufacturer requirements.
Frequently asked questions
Does Cabinet Door Size Calculator upload my data?
No. The included tool runs locally in your browser and does not send the entered content to a processing server.
Can I use the result commercially?
The generated result is based on your own input. Review it for accuracy and any third-party rights before commercial use.