840 Square Feet to Square Meters

840 ft² ≈ 78.039 m²

Calculation: m² = 840 ft² × 0.092903 ≈ 78.039 m²

Square Foot to Square Meter Converter

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How big is 840 ft²?

0.019 acres (840 sq ft) is about the size of a typical suburban backyard.

What does 840 ft² look like?

Illustration of a suburban backyard
0.019 acres (840 sq ft) is about the size of a typical suburban backyard.

Did you know? Suburban backyard is 0.02 acres.

A typical suburban backyard in the US is about 600-1,200 sq ft (0.014-0.028 acres).

How to Convert Square Foot to Square Meter

1 square foot = 0.092903 square meters exact

Square Meter = Square Foot × 0.092903

Example: 840 ft² × 0.092903 = 78.039 m²

Reverse Conversion

To convert square meters back to square feet:

  • Remember, 1 square meter equals 10.7639 square feet.
  • To convert 78.039 m² to ft², multiply 78.039 x 10.7639, resulting in 840 ft².

exact This conversion factor is exact by international definition.

840 ft² is also equal to:

  • 780390 square centimeter
  • 0.0078039 hectare
  • 120960 square inch
  • 0.019284 acre
About these units

Square foot: ft² — The square foot is a unit of area in the US customary and British imperial systems.

Square meter: m² — The square meter is the SI-derived unit of area. It is defined as the area of a square whose sides each measure exactly 1 meter, the SI base unit of length. The square meter is the fundamental...

Frequently Asked Questions

How much is 840 square feet in square meters?

840 square feet equals 78.039 square meters. This is calculated by multiplying 840 by the conversion factor 0.092903.

What does 840 square feet look like in square meters?

840 square feet (78.039 square meters) is a one-bedroom apartment or a small house.

How do you calculate 840 square feet to square meters?

Multiply 840 by the conversion factor 0.092903. The calculation is 840 × 0.092903 = 78.039 square meters. This factor is defined by international measurement standards.

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840 square feet = 78.0386 square meters
840 square feet = 78.0386 square meters — conversion chart

Nearby Conversions

790 square feet73.39 square meters 795 square feet73.86 square meters 800 square feet74.32 square meters 805 square feet74.79 square meters 810 square feet75.25 square meters 815 square feet75.72 square meters 820 square feet76.18 square meters 825 square feet76.65 square meters 830 square feet77.11 square meters 835 square feet77.57 square meters 845 square feet78.5 square meters 850 square feet78.97 square meters 855 square feet79.43 square meters 860 square feet79.9 square meters 865 square feet80.36 square meters 870 square feet80.83 square meters 875 square feet81.29 square meters 880 square feet81.75 square meters 885 square feet82.22 square meters 890 square feet82.68 square meters

For general conversions between square feet and square meters, see the square feet to square meters converter.

Also convert Square Feet to:

Conversion factors verified against NIST, BIPM, ISO 80000-3 Derived from SI base units (m², BIPM). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.