Premium Features
Unlock 32nds precision, unlimited history, auto-rounding, and metric conversion.
Fast Input Tips
Use ' for feet, " for inches, and / for fractions. Example: 5' 3/4".
Local Storage
History and settings are stored locally on your device. Uninstalling clears them.
FAQs
How do I enter feet and inches?
Type a number, then add feet with ' and inches with ". Example: 6' 3/4". Mixed numbers like 6 3/4" are supported.
Why does the app show inches after numbers?
If you enter a number without units, the calculator assumes inches to keep results consistent with construction measurements.
How does Auto-Round to 1/16" work?
With Premium enabled, Auto-Round rounds results to the nearest 1/16". Turn it on in Settings under Rounding.
How do I see Metric results?
Cycle the result format button until you see Metric. This option is available with Premium.
How do I clear or delete history entries?
Tap the X next to a history line to remove it. History is stored on-device only.
What should I do if Premium is not showing?
Check your internet connection, confirm the same Apple ID/Google account is in use, and restart the app. If it still does not show, contact support.
Troubleshooting
Purchase Not Recognized
Restart the app, verify your store account, and try again on Wi-Fi.
Unexpected Formatting
Use ' and " markers. If units are missing, the app will assume inches.
History Missing
History is saved locally. Reinstalling the app clears stored entries.