Area Conversion Chart: m², ft², hectare, acre

Area conversion chart: mm², cm², m², hectare, km², in², ft², yd², acre and mi² equivalents, with common values such as 100 m² or 1 acre.

For reference. Verify the application conditions and the applicable standard.

Visible rows: 38

Unit equivalents

Area conversion chart
From	mm²	cm²	m²	ha	km²	in²	ft²	yd²	acre	mi²
	Equals, in the unit of the column
1 mm²	1	0.01	1×10⁻⁶	1×10⁻¹⁰	1×10⁻¹²	0.001550003	0.00001076391	1.19599×10⁻⁶	2.471054×10⁻¹⁰	3.861022×10⁻¹³
1 cm²	100	1	0.0001	1×10⁻⁸	1×10⁻¹⁰	0.1550003	0.001076391	0.000119599	2.471054×10⁻⁸	3.861022×10⁻¹¹
1 m²	1000000	10000	1	0.0001	1×10⁻⁶	1550.003	10.76391	1.19599	0.0002471054	3.861022×10⁻⁷
1 ha	1×10¹⁰	100000000	10000	1	0.01	15500030	107639.1	11959.9	2.471054	0.003861022
1 km²	1×10¹²	1×10¹⁰	1000000	100	1	1.550003×10⁹	10763910	1195990	247.1054	0.3861022
1 in²	645.16	6.4516	0.00064516	6.4516×10⁻⁸	6.4516×10⁻¹⁰	1	0.006944444	0.0007716049	1.594225×10⁻⁷	2.490977×10⁻¹⁰
1 ft²	92903.04	929.0304	0.09290304	9.290304×10⁻⁶	9.290304×10⁻⁸	144	1	0.1111111	0.00002295684	3.587006×10⁻⁸
1 yd²	836127.4	8361.274	0.8361274	0.00008361274	8.361274×10⁻⁷	1296	9	1	0.0002066116	3.228306×10⁻⁷
1 acre	4.046856×10⁹	40468560	4046.856	0.4046856	0.004046856	6272640	43560	4840	1	0.0015625
1 mi²	2.589988×10¹²	2.589988×10¹⁰	2589988	258.9988	2.589988	4.01449×10⁹	27878400	3097600	640	1

Common values

Common values
From	mm²	cm²	m²	ha	km²	in²	ft²	yd²	acre	mi²
	Equals, in the unit of the column
1 m²	1000000	10000	1	0.0001	1×10⁻⁶	1550.003	10.76391	1.19599	0.0002471054	3.861022×10⁻⁷
2 m²	2000000	20000	2	0.0002	2×10⁻⁶	3100.006	21.52782	2.39198	0.0004942108	7.722043×10⁻⁷
5 m²	5000000	50000	5	0.0005	5×10⁻⁶	7750.016	53.81955	5.97995	0.001235527	1.930511×10⁻⁶
10 m²	10000000	100000	10	0.001	0.00001	15500.03	107.6391	11.9599	0.002471054	3.861022×10⁻⁶
20 m²	20000000	200000	20	0.002	0.00002	31000.06	215.2782	23.9198	0.004942108	7.722043×10⁻⁶
50 m²	50000000	500000	50	0.005	0.00005	77500.16	538.1955	59.7995	0.01235527	0.00001930511
100 m²	100000000	1000000	100	0.01	0.0001	155000.3	1076.391	119.599	0.02471054	0.00003861022
500 m²	500000000	5000000	500	0.05	0.0005	775001.6	5381.955	597.995	0.1235527	0.0001930511
1000 m²	1×10⁹	10000000	1000	0.1	0.001	1550003	10763.91	1195.99	0.2471054	0.0003861022
1 ft²	92903.04	929.0304	0.09290304	9.290304×10⁻⁶	9.290304×10⁻⁸	144	1	0.1111111	0.00002295684	3.587006×10⁻⁸
10 ft²	929030.4	9290.304	0.9290304	0.00009290304	9.290304×10⁻⁷	1440	10	1.111111	0.0002295684	3.587006×10⁻⁷
50 ft²	4645152	46451.52	4.645152	0.0004645152	4.645152×10⁻⁶	7200	50	5.555556	0.001147842	1.793503×10⁻⁶
100 ft²	9290304	92903.04	9.290304	0.0009290304	9.290304×10⁻⁶	14400	100	11.11111	0.002295684	3.587006×10⁻⁶
500 ft²	46451520	464515.2	46.45152	0.004645152	0.00004645152	72000	500	55.55556	0.01147842	0.00001793503
1000 ft²	92903040	929030.4	92.90304	0.009290304	0.00009290304	144000	1000	111.1111	0.02295684	0.00003587006
5000 ft²	464515200	4645152	464.5152	0.04645152	0.0004645152	720000	5000	555.5556	0.1147842	0.0001793503
1 ha	1×10¹⁰	100000000	10000	1	0.01	15500030	107639.1	11959.9	2.471054	0.003861022
2 ha	2×10¹⁰	200000000	20000	2	0.02	31000060	215278.2	23919.8	4.942108	0.007722043
5 ha	5×10¹⁰	500000000	50000	5	0.05	77500160	538195.5	59799.5	12.35527	0.01930511
10 ha	1×10¹¹	1×10⁹	100000	10	0.1	155000300	1076391	119599	24.71054	0.03861022
50 ha	5×10¹¹	5×10⁹	500000	50	0.5	775001600	5381955	597995	123.5527	0.1930511
100 ha	1×10¹²	1×10¹⁰	1000000	100	1	1.550003×10⁹	10763910	1195990	247.1054	0.3861022
1 acre	4.046856×10⁹	40468560	4046.856	0.4046856	0.004046856	6272640	43560	4840	1	0.0015625
2 acre	8.093713×10⁹	80937130	8093.713	0.8093713	0.008093713	12545280	87120	9680	2	0.003125
5 acre	2.023428×10¹⁰	202342800	20234.28	2.023428	0.02023428	31363200	217800	24200	5	0.0078125
10 acre	4.046856×10¹⁰	404685600	40468.56	4.046856	0.04046856	62726400	435600	48400	10	0.015625
50 acre	2.023428×10¹¹	2.023428×10⁹	202342.8	20.23428	0.2023428	313632000	2178000	242000	50	0.078125
100 acre	4.046856×10¹¹	4.046856×10⁹	404685.6	40.46856	0.4046856	627264000	4356000	484000	100	0.15625

Quick answers

1 in² = 0.00064516 m² = 6.4516×10⁻⁸ ha. View in table
1 ft² = 0.09290304 m² = 9.290304×10⁻⁶ ha. View in table
1 yd² = 0.8361274 m² = 0.00008361274 ha. View in table
1 acre = 4046.856 m² = 0.4046856 ha. View in table
1 mi² = 2589988 m² = 258.9988 ha. View in table

Conditions and notes

Conversion between area units only. Factors are exact definitions and displayed numbers are rounded to 7 significant digits.

The area factor is the square of the length factor. The metre to foot factor cannot be applied directly to an area.
The acre is taken as 43560 ft² with the international foot. The US survey acre differs by about 4 parts per million.
The mile is the international mile (1609.344 m). One mi² is exactly 640 acres.

Each row is a starting value. The columns show the same area in the other units. For example, the 1 ft² row gives 0.09290304 in the m² column. The shaded diagonal cells are the unit itself. The common values section below reads typical areas such as 100 m², 1000 ft² or 1 acre at a glance.

Area units are the square of a length unit. So although 1 m = 3.28 ft for length, 1 m² is about 10.76 ft² for area, because the factor is the square of the length factor. The inch is exactly 0.0254 m and the foot exactly 0.3048 m, so the area factors are exact too.

The acre is defined as 43560 ft² and equals about 4046.86 m². The hectare is 10000 m². The acre based on the US survey foot differs by about 4 parts per million. This chart uses the international foot.

Sources

This table is for preliminary reference. Check the applicable standard and product conditions before use.

Source 1. SP 811:2008. Accessed: 2026-10-16
Source 2. HB 44:2026. Accessed: 2026-10-16
Source 3. UKPGA 1985 C 72. Accessed: 2026-10-16

Data version: 2026-10-16