📏 Feet ⇄ Meters Length Converter

Convert length between feet and meters instantly. This tool is handy for reading building drawings, comparing specs, and translating measurements between US customary and metric units.

Feet and meters conversion results

Enter a length and choose whether it's in feet or meters, then select Convert Feet ⇄ Meters to see both units at once.

Length conversion breakdown

Once you run a conversion, this section shows the starting value, units, and conversion factors used so you can double-check the math and share it with others.

Length converter inputs and key terms

This converter is built around the two most common length units used in building and engineering worldwide. Here's what each input means.

• Length value: The numeric size of the length you want to convert. This could be a wall length, a beam, a piping run, or any other straight-line measurement.
• Starting unit: Whether your original measurement is recorded in feet or in meters. The converter uses this to decide which direction to convert.
• Foot (ft): A US customary unit of length. One foot is defined exactly as 0.3048 meters.
• Meter (m): The base SI unit of length, used in most of the world for building plans, engineering drawings, and technical specifications.
• Conversion factor (ft → m): One foot is exactly 0.3048 meters. Multiplying by this factor converts feet to meters.
• Conversion factor (m → ft): One meter is approximately 3.28084 feet. Multiplying by this factor converts meters to feet.
• Precision and rounding: Results are shown with a few decimal places to keep them readable, while still being accurate enough for most planning and estimating tasks.

Formulas used in the Feet ⇄ Meters Converter

The feet-to-meters relationship is defined exactly, so all calculations are simple multiplications by that constant.

1. Converting feet to meters

Let:
Lft = length in feet
Lm = length in meters
kft→m = conversion factor from ft to m
Using the standard:
kft→m = 0.3048
Then:
Lm = Lft × kft→m

2. Converting meters to feet

Let:
Lm = length in meters
Lft = length in feet
km→ft = conversion factor from m to ft
Because:
1 ft = 0.3048 m,
we have:
km→ft = 1 ÷ 0.3048 ≈ 3.280839895
Then:
Lft = Lm × km→ft

Internally, the calculator uses a precise conversion factor and then rounds the display to a user-friendly number of decimal places.

Feet ⇄ Meters Converter FAQs

• Why do I need to convert between feet and meters?
  Many building plans, product specs, and technical documents use different unit systems depending on the country or industry. Being able to convert quickly between feet and meters helps you understand drawings, compare products, and communicate clearly with contractors, engineers, and suppliers around the world.
• How accurate are these feet-to-meters conversions?
  The relationship between feet and meters is defined exactly (1 ft = 0.3048 m), so the math itself is precise. Any differences you see usually come from rounding the displayed result to a manageable number of decimal places, which is standard practice in construction and estimating.
• Should I round my converted measurements for construction work?
  Yes. Most construction measurements are rounded to practical values such as fractions of an inch or centimeters. Use the precise conversion as a starting point, then round to whatever resolution makes sense for your tools, materials, and local building practices.
• Can I use this converter for heights, widths, and depths too?
  Definitely. The same conversion works for any straight-line measurement: wall heights, ceiling heights, beam lengths, window widths, foundation depths, and more. As long as the quantity is a length in feet or meters, this tool applies.
• Do building codes prefer feet or meters?
  It depends on where you live. Many US codes are written in feet and inches, while most other countries use meters and millimeters. This converter helps translate between them, but your final documents should follow the units required by your local building authority and design professionals.
• Will converting back and forth cause rounding errors?
  Very small rounding differences can appear if you convert multiple times in a row, especially if you round aggressively to fewer decimal places. For critical dimensions, it's best to pick a primary unit system (feet or meters) and stick with it throughout your project.