The US survey foot is 1200/3937 meters and is retained for legacy land records.
US survey feet to Zettameters Converter — ftUS to Zm
Convert US survey foot (ftUS) to Zettameter (Zm) using the exact conversion factor (1 us survey foot = 3.048006e-22 zettameter). See the formula, worked examples, and conversion table.
US survey feet to Zettameters converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
Zettameter is 1e+21 meter units.
Result = input x 0.3048006096 / 1e+21.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting US survey feet to Zettameters
US survey foot and Zettameter both measure length. Specifically: The US survey foot is 1200/3937 meters and is retained for legacy land records, and zettameter is 1e+21 meter units.
Formula
zettameters = us survey feet × 3.048006e-22
This factor comes from each unit's defined relationship to the category's base unit: 1 us survey foot equals 0.304800609601 base units, and 1 zettameter equals 1e+21 base units, so dividing one by the other gives the direct us survey foot-to-zettameter factor of 3.048006e-22.
Simple example
1 ftUS × 3.048006e-22 = 3.048006e-22 Zm
1 us survey foot = 3.048006e-22 zettameters.
Real-world example
10 ftUS × 3.048006e-22 = 3.048006e-21 Zm
10 us survey feet = 3.048006e-21 zettameters.
Conversion table
| US survey foot (ftUS) | Zettameter (Zm) |
|---|---|
| 1 ftUS | 3.048006e-22 Zm |
| 5 ftUS | 1.524003e-21 Zm |
| 10 ftUS | 3.048006e-21 Zm |
| 21.0975 ftUS | 6.430531e-21 Zm |
| 42.195 ftUS | 1.286106e-20 Zm |
| 100 ftUS | 3.048006e-20 Zm |
Reverse conversion: Zettameter to US survey foot
3.048006e-22 Zm × 3.280833e+21 = 0.9999999685 ftUS
3.048006e-22 zettameters = 0.9999999685 us survey feet.
us survey feet = zettameters × 3.280833e+21
For a page dedicated to this direction, see Zettameter to US survey foot.
Understanding the US survey foot (ftUS)
The US survey foot is 1200/3937 meters and is retained for legacy land records.
Understanding the Zettameter (Zm)
Zettameter is 1e+21 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zettameters are in 1 us survey foot?
1 us survey foot equals 3.048006e-22 zettameters, using the exact defined conversion factor rather than an estimate.
How do I convert us survey foot to zettameter?
Multiply the us survey foot value by 3.048006e-22. The converter above does this instantly to whatever precision you set.
How do I convert zettameter back to us survey foot?
Use the reverse factor: 1 zettameter equals 3.280833e+21 us survey feet. You can also use the swap control in the converter above to flip the direction instantly.
What is a us survey foot?
US survey foot (ftUS) is a unit of length.
What is a zettameter?
Zettameter (Zm) is a unit of length.
Is the us survey foot to zettameter conversion exact?
Yes. Both us survey foot and zettameter are defined by fixed standards rather than physical artifacts, so the factor of 3.048006e-22 used above is exact to as many digits as you choose to display.