To convert US survey feet to spans, multiply the value by 1.33334. To go the other way, multiply spans by 0.749999 to get US survey feet.
| US Survey Feet (ftUS) | Spans (span) |
|---|---|
| 1 ftUS | 1.33334 span |
| 2 ftUS | 2.66667 span |
| 3 ftUS | 4.00001 span |
| 4 ftUS | 5.33334 span |
| 5 ftUS | 6.66668 span |
| 6 ftUS | 8.00002 span |
| 7 ftUS | 9.33335 span |
| 8 ftUS | 10.6667 span |
| 9 ftUS | 12 span |
| 10 ftUS | 13.3334 span |
| 12 ftUS | 16 span |
| 14 ftUS | 18.6667 span |
| 15 ftUS | 20 span |
| 20 ftUS | 26.6667 span |
| 21 ftUS | 28.0001 span |
| 24 ftUS | 32.0001 span |
| 25 ftUS | 33.3334 span |
| 30 ftUS | 40.0001 span |
| 40 ftUS | 53.3334 span |
| 50 ftUS | 66.6668 span |
| 60 ftUS | 80.0002 span |
| 75 ftUS | 100 span |
| 80 ftUS | 106.667 span |
| 100 ftUS | 133.334 span |
| 200 ftUS | 266.667 span |
| 250 ftUS | 333.334 span |
| 300 ftUS | 400.001 span |
| 400 ftUS | 533.334 span |
| 500 ftUS | 666.668 span |
| 750 ftUS | 1,000 span |
| 1,000 ftUS | 1,333.34 span |
US survey foot (ftUS). The US survey foot is about 0.3048006 m, very slightly longer than the international foot, and was used in US land surveys.
Span (span). A span is 9 inches (0.2286 m), the distance across an outstretched hand.
There are 1.33334 spans in one US survey foot.
Multiply the number of US survey feet by 1.33334. For example, 10 US survey feet equal 13.3334 spans.
One span equals 0.749999 US survey feet.
16 spans. Other common values: 5 US survey feet = 6.66668 spans and 100 US survey feet = 133.334 spans.