To convert spans to US survey feet, multiply the value by 0.749999. To go the other way, multiply US survey feet by 1.33334 to get spans.
| Spans (span) | US Survey Feet (ftUS) |
|---|---|
| 1 span | 0.749999 ftUS |
| 2 span | 1.5 ftUS |
| 3 span | 2.25 ftUS |
| 4 span | 2.99999 ftUS |
| 5 span | 3.74999 ftUS |
| 6 span | 4.49999 ftUS |
| 7 span | 5.24999 ftUS |
| 8 span | 5.99999 ftUS |
| 9 span | 6.74999 ftUS |
| 10 span | 7.49999 ftUS |
| 12 span | 8.99998 ftUS |
| 14 span | 10.5 ftUS |
| 15 span | 11.25 ftUS |
| 20 span | 15 ftUS |
| 21 span | 15.75 ftUS |
| 24 span | 18 ftUS |
| 25 span | 18.75 ftUS |
| 30 span | 22.5 ftUS |
| 40 span | 29.9999 ftUS |
| 50 span | 37.4999 ftUS |
| 60 span | 44.9999 ftUS |
| 75 span | 56.2499 ftUS |
| 80 span | 59.9999 ftUS |
| 100 span | 74.9999 ftUS |
| 200 span | 150 ftUS |
| 250 span | 187.5 ftUS |
| 300 span | 225 ftUS |
| 400 span | 299.999 ftUS |
| 500 span | 374.999 ftUS |
| 750 span | 562.499 ftUS |
| 1,000 span | 749.999 ftUS |
Span (span). A span is 9 inches (0.2286 m), the distance across an outstretched hand.
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.
There are 0.749999 US survey feet in one span.
Multiply the number of spans by 0.749999. For example, 10 spans equal 7.49999 US survey feet.
One US survey foot equals 1.33334 spans.
8.99998 US survey feet. Other common values: 5 spans = 3.74999 US survey feet and 100 spans = 74.9999 US survey feet.