Feet Inch Calculator - One16

Making stuff is fun. Math isn't. Making the most of our precious time in the shop is critical. One16 helps you spend less time calculating and more time building.

One16 V4 has been rebuilt from the ground up with a redesigned interface, full feet-and-inches support, and faster access to the tools you use most.

Enter measurements naturally, then add, subtract, multiply, or divide fractions and decimals. Choose your preferred rounding precision and switch between standard and feet-and-inches input directly from the calculator toolbar.

The redesigned history tape makes answers easier to distinguish and previous calculations easy to reuse. Double-tap a value to bring it back into the calculator, copy individual values to the clipboard, or copy an entire equation to share elsewhere.

Redesigned widgets keep your latest full equation and answer visible at a glance. You can also open One16 quickly from Control Center, the Lock Screen, or Shortcuts.

One16 includes thoughtful details for working quickly: optional denominator keys, haptic feedback, automatic keypad hiding while scrolling, decimal-to-fraction conversion, and fraction simplification.

Privacy is at the core of all our products. One16 doesn't track any data about you or how you use the app. If you find a bug or have a feature suggestion, please reach out. We love hearing from our users!

Full feature list:

• Feet-and-inches calculations
• Redesigned calculation history
• Add, subtract, multiply, and divide fractions and decimals
• Rounding presets: 1/64, 1/32, 1/16, 1/8, 1/4, 1/2, and 1
• Quick rounding and unit controls
• Decimal-to-fraction conversion
• Fraction simplification
• Optional denominator keyboard
• Copy individual values or complete equations
• Double-tap previous values for quick entry
• Haptic feedback
• Automatically hide the keypad while scrolling
• Widgets with your latest full equation
• Control Center, Lock Screen, and Shortcuts access
• Privacy focused

One16 is built by a weekend woodworker with a family and a full-time job. That's who this app is designed for. Have a feature suggestion? Let us know!