Rod to Astronomical Unit Converter

Length Converter

31 units available

Decimals:

From

To

3.361813e-11

1 rd = 3.361813e-11 AU

Formula:

AU = rd × 3.361813e-11

With your value: 1 rd = 3.361813e-11 AU

How big is that?

Everyday references on a logarithmic scale, all expressed in rod so you can sanity-check the result.

A4 sheet (height) (1/17 your value)0.0591 rd

Adult stride (1/6.7 your value)0.149 rd

Standard door height (1/2.5 your value)0.398 rd

Your value1.00 rd

London double-decker bus (2.2× your value)2.19 rd

Olympic pool (9.9× your value)9.94 rd

Other Rod to Astronomical Unit conversions

2 rd to AU 3 rd to AU 4 rd to AU 5 rd to AU 6 rd to AU 7 rd to AU 8 rd to AU

Rod to Astronomical Unit Conversion Table

Rod (rd)	Astronomical Unit (AU)
0.5	1.680906e-11
1	3.361813e-11
2	6.723625e-11
5	1.680906e-10
10	3.361813e-10
15	5.042719e-10
20	6.723625e-10
25	8.404531e-10
50	1.680906e-9
100	3.361813e-9
250	8.404531e-9
500	1.680906e-8
1000	3.361813e-8

Astronomical Unit to Rod Conversion Table

Astronomical Unit (AU)	Rod (rd)
0.5	14,872,929,163.684084
1	29,745,858,327.368168
2	59,491,716,654.736336
5	148,729,291,636.84085
10	297,458,583,273.6817
15	446,187,874,910.5225
20	594,917,166,547.3634
25	743,646,458,184.2041
50	1.487293e+12
100	2.974586e+12
250	7.436465e+12
500	1.487293e+13
1000	2.974586e+13

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Rod (rd)

Length

Exact conversion

Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Astronomical Unit (AU)

Length

Exact conversion

The astronomical unit is exactly 149 597 870 700 m (IAU Resolution B2, 2012).

Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values

International Astronomical Union · Reviewed 2026-07-01

How to Convert Rod to Astronomical Unit

To convert from Rod (rd) to Astronomical Unit (AU), multiply the value by 3.361813e-11.

Formula: AU = rd × 3.361813e-11

Reverse: rd = AU × 2.974586e+10

Step-by-Step Example

Start with your value in Rod. For example: 5 rd
Multiply by the conversion factor: 5 x 3.361813e-11
The result is: 1.680906e-10 AU

About Rod

The rod (pole or perch) equals 16.5 feet (5.0292 m). Four rods make a chain, and it still appears in older deeds and fencing estimates.

Common uses: historic deeds, fencing, surveying.

About Astronomical Unit

The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.

Common uses: planetary science, orbital mechanics, astronomy.

Frequently Asked Questions

How many Astronomical Unit are in 1 Rod?

There are exactly 3.361813e-11 Astronomical Unit in 1 Rod. This means the conversion factor from Rod to Astronomical Unit is 3.361813e-11.

What is the formula to convert Rod to Astronomical Unit?

The formula to convert Rod to Astronomical Unit is: AU = rd × 3.361813e-11. For example, to convert 10 Rod to Astronomical Unit, you would multiply 10 by 3.361813e-11.

What is a Rod?