Area Converter — Calculator

About area conversions

Area measures a two-dimensional surface, so every unit is a length squared — which is why the factors are much larger than their length equivalents. A square meter is 10,000 square centimeters, and a square kilometer is one million square meters. All the factors here follow exactly from the length definitions.

Land is where area units matter most, and the unit depends on where you are. Tanzania and most metric countries state land in hectares and square meters, while acres still appear in older title deeds and in agricultural contexts shaped by imperial practice. One hectare is 10,000 square meters; one acre is about 0.4047 hectares.

Land and farmland — hectares or acres.
Floor area and property listings — square meters or square feet.
Materials that cover a surface: tiles, roofing, paint.
Large territories — square kilometers or square miles.

Reading the answers. Every factor is an exact definition, so the only loss is display rounding. Land figures quoted in acres and hectares are usually rounded at the source.

The units in this converter

What each unit is and where it is normally used. Everything here is converted through the square meters.

Square millimeters (mm²): A square millimeter is one millionth of a square meter. It is used for small cross-sections, circuit boards and material specifications.
Square centimeters (cm²): A square centimeter is one ten-thousandth of a square meter. It is used for small surfaces such as fabric swatches, skin areas and craft work.
Square meters (m²): The square meter is the SI unit of area. It is used for floor space, land plots and material quantities such as tiles or paint coverage; a parking bay is about 12 square meters.
Square kilometers (km²): A square kilometer is one million square meters. It is used for districts, national parks and country areas — and one square kilometer is exactly 100 hectares.
Hectares (ha): A hectare is 10,000 square meters, or 0.01 square kilometers. It is the standard unit for farmland and land-title areas in Tanzania and most metric countries.
Acres (ac): An acre is 4,046.8564224 square meters, about 0.4047 hectares. It is the traditional land unit of the UK and US and is still used for land in parts of East Africa.
Square feet (ft²): A square foot is 0.09290304 square meters. It is the standard unit for floor area and property listings in the United States and the UK.
Square inches (in²): A square inch is 6.4516 square centimeters. It is used for small areas, and is the denominator in psi, the imperial pressure unit.
Square yards (yd²): A square yard is 0.83612736 square meters, or 9 square feet. It is used for carpet, landscaping and fabric in imperial-measure countries.
Square miles (mi²): A square mile is about 2.59 square kilometers, or exactly 640 acres. It is used for land and territory areas in the United States and the UK, and for large ranch or park sizes.

Tanzania reference points

Real quantities in area, shown in the units people actually use.

The total surface area of Tanzania, including Zanzibar
947,303 km² · 9.473e17 mm² · 9.473e15 cm² · 947,303,000,000 m² · 94,730,300 ha · 234,083,669.17999 ac · 10,196,684,629,480.37 ft² · 1.4683e15 in² · 1,132,964,958,831.1523 yd² · 365,755.733094 mi²
Source: UN Statistics Division — World Statistics Pocketbook, country profile: Tanzania · verified 2026-09-14

Popular conversions

Square meters to Square feet Square feet to Square meters Acres to Square meters Square meters to Acres Hectares to Acres Acres to Hectares Square kilometers to Square miles Square miles to Square kilometers

Convert from any area unit

Each unit has its own page with every other unit in the dimension, the exact factor for each, and worked values.

Square millimeters convertermm² to 9 other area units Square centimeters convertercm² to 9 other area units Square meters converterm² to 9 other area units Square kilometers converterkm² to 9 other area units Hectares converterha to 9 other area units Acres converterac to 9 other area units Square feet converterft² to 9 other area units Square inches converterin² to 9 other area units Square yards converteryd² to 9 other area units Square miles convertermi² to 9 other area units

Frequently asked questions

How many square feet are in an acre?

One acre equals exactly 43,560 square feet.

How many square meters are in a hectare?

One hectare equals exactly 10,000 square meters.

How do I convert square feet to square meters?

Multiply the square-foot value by 0.09290304 to get square meters.

All area conversions

Every area conversion on Calculator, listed in full.