Feet Calculator
Use this free tool to convert feet to other units, convert feet + inches to metric, and calculate square footage for rooms or flooring projects.
1) Length Converter
2) Height Converter (Feet + Inches)
3) Area Calculator (Square Feet)
Tip: For irregular rooms, split the room into rectangles, calculate each area, then add them together.
What is a feet calculator?
A feet calculator is a practical tool for converting and calculating measurements that use feet as the base unit. Whether you are measuring a room, checking your height, planning a fence, or buying flooring, fast unit conversion helps avoid mistakes and saves time.
In everyday life, people often switch between imperial and metric systems. For example, a contractor might work in square feet while product labels are in square meters. A good feet calculator bridges that gap instantly.
Most common feet conversions
Feet to inches
There are 12 inches in 1 foot. Multiply feet by 12 to convert:
- 6 ft = 72 in
- 8.5 ft = 102 in
Feet to meters
1 foot equals 0.3048 meters. Multiply feet by 0.3048:
- 10 ft = 3.048 m
- 25 ft = 7.62 m
Feet to centimeters
1 foot equals 30.48 centimeters. Multiply feet by 30.48:
- 5 ft = 152.4 cm
- 12 ft = 365.76 cm
How to use this feet calculator effectively
- Use Length Converter for quick unit conversion between feet, inches, yards, miles, meters, and centimeters.
- Use Height Converter when someone gives height in feet and inches (like 5'10").
- Use Area Calculator for room measurements, flooring, paint estimates, turf, tile, or carpet planning.
Real-world examples
Flooring estimate
If a room is 14 ft by 12 ft, the area is 168 sq ft. If your flooring costs $4.25 per sq ft, estimated material cost is $714 before tax and waste factor.
Height conversion
If a person is 5 ft 9 in tall, total height in centimeters is 175.26 cm. This is useful for medical records, travel forms, and sports profiles that request metric units.
Landscape planning
When you measure a lawn in feet but buy fertilizer based on square meters, quick conversion prevents underbuying or overspending.
Helpful formulas
- Feet to inches: ft × 12
- Feet to meters: ft × 0.3048
- Feet to centimeters: ft × 30.48
- Square feet: length (ft) × width (ft)
- Square feet to square meters: sq ft × 0.09290304
- Square feet to acres: sq ft ÷ 43,560
Common mistakes to avoid
- Mixing linear feet and square feet (length vs area).
- Forgetting to include inches when converting height.
- Rounding too early when precision matters.
- Ignoring extra material for waste in tile, wood, and carpet projects.
Final thoughts
A reliable feet calculator is one of those small tools that makes a big difference. Accurate measurements improve budgets, reduce wasted materials, and speed up planning. Bookmark this page and use it whenever you need quick length, height, or area conversions involving feet.