Solverly

Feet ↔ Inches Converter

The Feet ↔ Inches Converter quickly translates between combined feet-and-inches and pure inches. It’s handy for height entries, trim carpentry cuts, blueprint dimensions, and any task where you move between fractional measurements and a single total value without mental math.

Enter a value in either format to instantly get the equivalent the other way, including smart handling of fractions and rounding to common increments. The goal is clear, error-free measurements so you can read plans, order materials, and communicate dimensions consistently—saving time and avoiding costly re-cuts. Plug in your numbers and build with confidence.

Convert feet (ft) to inches (in) and back — fast, accurate, and built for framing and trim math.

Feet ↔ Inches conversion
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Enter feet or inches to see the conversion.

Feet ↔ Inches Inputs

Converted values

Feet → Inches
72.0 in
Inches → Feet
6.0 ft
Formatter
6 ft 0.0 in

Results interpretation

  • We convert in real time. If you enter a value in feet, we multiply by 12 to get inches. If you enter a value in inches, we divide by 12 to get feet. The Formatter shows a convenient ft+in mix such as5 ft 8.5 in.
  • The Decimals selector controls rounding for display only. Internally we keep full precision for accurate back-and-forth edits.
How it works (formulas, assumptions, limits)

Formulas

  • inches = feet × 12
  • feet = inches ÷ 12
  • mixed format:
    • wholeFeet = floor(totalInches ÷ 12)
    • remInches = totalInches − wholeFeet × 12
    • round remInches to your decimals setting

Assumptions

  • 1 foot = 12 inches exactly (U.S. customary units).
  • Rounding applies to UI display only; conversions use full precision.

Limits

  • The inputs accept decimals and negative values. For materials takeoffs, use non‑negative values unless you specifically need signed math.
  • Very large values may be clipped by your browser’s number input limits.

Use cases

Use 1: Framing and trim measurements when a plan lists fractional inches.

Use 2: Converting a sketch dimension from ft to total inches for ordering.

Use 3: Switching shop notes from inches back to ft+in before installation.

Feet ↔ Inches — FAQ

How many inches are in a foot?

Exactly 12 inches are in one foot.

Can I enter decimals like 5.75 ft?

Yes. We support decimal feet and inches, and we round your display to the decimals you choose.

What does the Formatter show?

A human‑friendly ft+in mix (e.g., 5 ft 8.5 in). It’s helpful for cut lists and layout notes.

Do you round up to the nearest inch automatically?

No. We round to your chosen decimal places; you decide how to round for your project.

Will switching between feet and inches lose precision?

No. We keep full internal precision and only round the visible output.

Why do I see 12.0 in become 1 ft 0 in?

When the rounded remainder hits 12, we carry 1 foot and reset inches to 0 for a clean format.

Does this handle architectural fractions (like 5′‑8 1/2″)?

Type 5.5 ft (or 66 in) and set decimals as needed. A fractions mode may be added later.