How to convert X-units to chains (US survey)
1 x-unit is equal to 4.981299192 × 10⁻¹⁵ chains (US survey), and 1 chain (us survey) is equal to 200,750,840,600,000 X-units. To convert, multiply by the conversion factor:
chains (US survey) = X-units × 4.981299192 × 10⁻¹⁵
chains (US survey) = X-units ÷ 200,750,840,600,000Example: convert 1 xu to ch (US): 1 × 4.981299192 × 10⁻¹⁵ = 4.981299192 × 10⁻¹⁵ ch (US).
X-unit to Chain (US Survey) conversion table
| X-unit (xu) | Chain (US Survey) (ch (US)) |
|---|---|
| 0.01 xu | 4.981299192 × 10⁻¹⁷ ch (US) |
| 0.1 xu | 4.981299192 × 10⁻¹⁶ ch (US) |
| 1 xu | 4.981299192 × 10⁻¹⁵ ch (US) |
| 2 xu | 9.962598384 × 10⁻¹⁵ ch (US) |
| 3 xu | 1.494389758 × 10⁻¹⁴ ch (US) |
| 5 xu | 2.490649596 × 10⁻¹⁴ ch (US) |
| 10 xu | 4.981299192 × 10⁻¹⁴ ch (US) |
| 20 xu | 9.962598384 × 10⁻¹⁴ ch (US) |
| 50 xu | 2.490649596 × 10⁻¹³ ch (US) |
| 100 xu | 4.981299192 × 10⁻¹³ ch (US) |
| 250 xu | 1.245324798 × 10⁻¹² ch (US) |
| 500 xu | 2.490649596 × 10⁻¹² ch (US) |
| 1,000 xu | 4.981299192 × 10⁻¹² ch (US) |
About the x-unit
The X-unit (about 1.002 × 10⁻¹³ m) was used to express X-ray and gamma-ray wavelengths before the ångström and picometer became standard.
Symbol: xu · 1 xu = 1.00208 × 10⁻¹³ m · Category: Atomic & physics
About the chain (us survey)
The US survey chain is 66 US survey feet, about 20.11684 m, used in the US Public Land Survey System.
Symbol: ch (US) · 1 ch (US) = 20.11684023 m · Category: US survey units