How to convert chains (US survey) to astronomical units
1 chain (us survey) is equal to 1.344727712 × 10⁻¹⁰ astronomical units, and 1 astronomical unit is equal to 7,436,449,709 chains (US survey). To convert, multiply by the conversion factor:
astronomical units = chains (US survey) × 1.344727712 × 10⁻¹⁰
astronomical units = chains (US survey) ÷ 7,436,449,709Example: convert 1 ch (US) to au: 1 × 1.344727712 × 10⁻¹⁰ = 1.344727712 × 10⁻¹⁰ au.
Chain (US Survey) to Astronomical Unit conversion table
| Chain (US Survey) (ch (US)) | Astronomical Unit (au) |
|---|---|
| 0.01 ch (US) | 1.344727712 × 10⁻¹² au |
| 0.1 ch (US) | 1.344727712 × 10⁻¹¹ au |
| 1 ch (US) | 1.344727712 × 10⁻¹⁰ au |
| 2 ch (US) | 2.689455423 × 10⁻¹⁰ au |
| 3 ch (US) | 4.034183135 × 10⁻¹⁰ au |
| 5 ch (US) | 6.723638558 × 10⁻¹⁰ au |
| 10 ch (US) | 1.344727712 × 10⁻⁹ au |
| 20 ch (US) | 2.689455423 × 10⁻⁹ au |
| 50 ch (US) | 6.723638558 × 10⁻⁹ au |
| 100 ch (US) | 1.344727712 × 10⁻⁸ au |
| 250 ch (US) | 3.361819279 × 10⁻⁸ au |
| 500 ch (US) | 6.723638558 × 10⁻⁸ au |
| 1,000 ch (US) | 1.344727712 × 10⁻⁷ au |
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
About the astronomical unit
The astronomical unit is exactly 149,597,870,700 m, roughly the average distance from Earth to the Sun. It's used for distances within the solar system.
Symbol: au · 1 au = 149,597,870,700 m · Category: Astronomical