Tenths to Inches Calculator – Convert Decimal Feet & Inches Online

  • Adam
  • November 22, 2025

Free tenths calculator to convert tenths of a foot to inches, decimal inches to fractions, and inches to tenths. Instant conversions for construction and surveying.

Tenths to Inches Calculator

Convert Tenths of a Foot, Decimal Inches & Fractions

Tenths Converter

Understanding Tenths of a Foot

In construction, surveying, and engineering, measurements are often expressed in tenths of a foot rather than inches. This decimal system makes calculations easier than working with fractions. One foot is divided into 10 equal parts called tenths.

Key Conversion Formula

Tenths to Inches:

Inches = Tenths × 1.2

Inches to Tenths:

Tenths = Inches / 1.2

Since 1 foot = 12 inches and 1 foot = 10 tenths, therefore 1 tenth = 1.2 inches (12 ÷ 10 = 1.2)

Why Use Tenths?

  • Easier calculations - Decimal math is simpler than fractions
  • Surveying standard - Land surveys use decimal feet
  • Construction efficiency - Quick mental math on job sites
  • Engineering precision - Consistent with metric-like decimal system
  • Digital tools - Compatible with calculators and software

Quick Reference Tables

Tenths to Inches

Tenths (ft) Inches Fraction
0.11.2"1 3/16"
0.22.4"2 3/8"
0.33.6"3 5/8"
0.44.8"4 13/16"
0.56.0"6"
0.67.2"7 3/16"
0.78.4"8 3/8"
0.89.6"9 5/8"
0.910.8"10 13/16"
1.012.0"12" (1')

Decimal to Fraction

Decimal Fraction (1/16)
0.06251/16"
0.1251/8"
0.251/4"
0.3753/8"
0.51/2"
0.6255/8"
0.753/4"
0.8757/8"
0.937515/16"

Frequently Asked Questions

How do you convert tenths to inches?

To convert tenths of a foot to inches, multiply the tenth value by 1.2. Formula: Inches = Tenths × 1.2. Example: 0.5 tenths = 0.5 × 1.2 = 6 inches. This works because 1 foot = 12 inches, and when divided into 10 equal parts (tenths), each tenth equals 1.2 inches (12 ÷ 10 = 1.2).

How many inches is 0.1 tenths of a foot?

0.1 tenths of a foot (or one-tenth of a foot) equals 1.2 inches. Formula: 0.1 feet × 12 inches/foot = 1.2 inches. This is the fundamental conversion factor: each tenth of a foot is equal to 1.2 inches. This makes sense because 10 tenths = 1 foot = 12 inches, so 1 tenth = 12 ÷ 10 = 1.2 inches.

How do you convert inches to tenths of a foot?

To convert inches to tenths of a foot, divide the inches by 1.2. Formula: Tenths = Inches / 1.2. Example: 6 inches = 6 / 1.2 = 5 tenths (or 0.5 feet). Alternatively, first convert to decimal feet by dividing by 12, which gives the same result: 6 / 12 = 0.5 feet = 5 tenths.

How to convert decimal inches to fractions?

To convert decimal inches to fractions: 1) Separate the whole number, 2) Take the decimal portion, 3) Multiply by your desired denominator (e.g., 16 for sixteenths), 4) Round to nearest whole number for numerator. Example: 2.75 inches = 2 whole inches + (0.75 × 16)/16 = 2 + 12/16 = 2 3/4 inches. Common denominators are 8, 16, 32, or 64.

What is a tenth of a foot in construction?

In construction and surveying, a tenth of a foot is 1.2 inches or 0.1 feet in decimal form. This measurement system is used because it's easier to calculate with decimals than fractions on job sites. 1 foot = 10 tenths = 12 inches, so 1 tenth = 1.2 inches. Contractors use tenths for grade measurements, elevations, and surveying work where decimal precision is essential.

Disclaimer: This tenths calculator uses standard conversion factors: 1 tenth of a foot = 1.2 inches, 1 foot = 12 inches = 10 tenths. Fraction conversions are rounded to the nearest specified precision (1/8, 1/16, 1/32, or 1/64 inch). Results are mathematically accurate for the given inputs. For professional construction, surveying, or engineering applications, always verify critical measurements with proper tools and qualified professionals.

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