Convert square km to square feet
1 km² = 10763900 ft² · 1 ft² = 9.2903e-8 km² · Exact by definition
1 km² = 10763900 ft²
The same value in other units
- square centimetre
- 10000000000 cm²
- square metre
- 1000000 m²
- hectare
- 100 ha
Settings
Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.
Convert a whole list
Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.
Area
square km to square feet: conversion table
| square kilometre | square foot |
|---|---|
| 1 km² | 10763900 ft² |
| 2 km² | 21527800 ft² |
| 3 km² | 32291700 ft² |
| 5 km² | 53819600 ft² |
| 10 km² | 107639000 ft² |
| 20 km² | 215278000 ft² |
| 25 km² | 269098000 ft² |
| 50 km² | 538196000 ft² |
| 100 km² | 1076390000 ft² |
| 250 km² | 2690980000 ft² |
| 500 km² | 5381960000 ft² |
| 1000 km² | 10763900000 ft² |
| square foot | square kilometre |
|---|---|
| 1 ft² | 9.2903e-8 km² |
| 2 ft² | 1.85806e-7 km² |
| 3 ft² | 2.78709e-7 km² |
| 5 ft² | 4.64515e-7 km² |
| 10 ft² | 9.2903e-7 km² |
| 20 ft² | 1.85806e-6 km² |
| 25 ft² | 2.32258e-6 km² |
| 50 ft² | 4.64515e-6 km² |
| 100 ft² | 9.2903e-6 km² |
| 250 ft² | 2.32258e-5 km² |
| 500 ft² | 4.64515e-5 km² |
| 1000 ft² | 9.2903e-5 km² |
How the conversion works
ft² = km² × 10763910
Both units are defined exactly, so the precision of the square km to square feet result depends only on the number of decimal places you choose.
METHOD AND SOURCES
Where the conversion factors come from
Results are calculated from the unit definitions stored in the converter, not copied from a lookup table. For exact units, every value in the table follows from the same factor shown in the formula above.
- BIPM — SI Brochure
The official definitions of the International System of Units (SI).
- NIST SP 811 — Conversion factors
Conversion-factor tables for SI and non-SI units.
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