Figure

Measurements and units

Feet and inches

Enter mixed feet, whole inches, and inch fractions.1

Enter a measurement in parts: feet, whole inches, then an inch fraction. The fraction-entry key builds a fraction; the division key performs arithmetic. Keep those two roles separate when reading a key sequence.

One foot contains 12 inches. To turn a mixed measurement into inches, multiply the feet by 12, add the whole inches, then add the inch fraction. Keep the fraction attached to the inches rather than treating it as a decimal part of a foot.

The first example enters 12 ft 6⅜ in: 12 × 12 + 6 + 3/8 = 150.375 inches. Figure lets you enter those parts directly instead of doing that conversion first.

Enter a length

Enter feet, then whole inches, then the inch fraction. / enters a fraction; ÷ divides.

Replace the current entry

  1. Press Clear entry.

1. Feet and whole inches

  1. Feet

    Press 12, then feet.

  2. Whole inches

    Press 6, then inches.

2. Add the inch fraction

  1. Top number

    Press 3, then Fraction.

  2. Bottom number

    Press 8.
  1. Example result12 feet 6 and 3/8 inches

Use the length

Continue with +, −, × or ÷. Open a mode to assign a measurement to its inputs.

Enter just an inch fraction

Enter the top number, /, then the bottom number. No Inch press is needed.

Replace the current entry

  1. Press Clear entry.

Enter the fraction

  1. Top number

    Press 3, then Fraction.

  2. Bottom number

    Press 8.
  1. Example result3/8 inch

Display assumptions

  1. Fraction precision: 1/16″; Fraction format: Simplified. ↩

References

Keep the guide beside your calculation.

These examples are built into Figure. Open Help while you calculate, then return to the same guide and reading position.

See Help in Figure →