Versta to Parsec Conversion Calculator: Free Online Tool
Convert versts to parsecs with our free online length converter.
Versta to Parsec Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Versta).
- The converted value in Parsec will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Length category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Versta to Parsec
Converting Versta to Parsec involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Versta = 3.4572e-14 parsecsExample Calculation:
Convert 10 versts: 10 × 3.4572e-14 = 3.4572e-13 parsecs
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Versta and a Parsec?
The Versta (Russian: верста́, plural: вёрсты, vyorsty) is an obsolete Russian unit of length or distance. It was defined as being equal to 500 sazhenes (саже́нь).
Based on the standardized sajene of 7 English feet (2.1336 meters) established under Peter the Great, one Versta is equal to:
- 1066.8 meters (m)
- 1.0668 kilometers (km)
- Approximately 3500 feet (ft)
- Approximately 0.6629 miles (mi)
The Parsec (symbol pc) is a unit of length used to measure the enormous distances to astronomical objects outside the Solar System. One parsec is defined as the distance at which one astronomical unit (AU) – the average distance between the Earth and the Sun – subtends an angle of one arcsecond (1/3600th of a degree). This corresponds to approximately:
- 3.0857 × 10¹⁶ meters (m)
- 30.857 trillion kilometers (km)
- 19.174 trillion miles (mi)
- 206,264.8 astronomical units (AU)
- 3.26156 light-years (ly)
It is derived directly from the method of trigonometric parallax used by astronomers to measure stellar distances.
Note: The Versta is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Parsec belongs to the imperial/US customary system.
History of the Versta and Parsec
The Versta was a traditional unit of distance in Russia, used since at least the 11th century. Its length varied historically until Peter the Great standardized the Russian system of measures in the 18th century, linking the sajene to the English foot (1 sajene = 7 feet). This fixed the Versta at 500 * 7 = 3500 feet, or 1066.8 meters.
- Imperial Russia: The Versta became the standard unit for measuring road distances throughout the Russian Empire. Roads were often marked with verst posts (верстово́й столб, verstovoy stolb) indicating distances.
- Mezhevaya Versta: A less common "boundary versta" (межева́я верста́, mezhevaya versta) also existed, primarily for land surveying. It was twice as long, equal to 1000 sazhenes (approximately 2.13 km). Unless specified otherwise, "Versta" usually refers to the standard 500-sajene unit.
- Metrication: The Versta became obsolete after the Russian Revolution. The metric system was officially adopted in 1918 and became mandatory in 1925, replacing the traditional Russian units.
The concept of measuring stellar distances via parallax existed long before the unit itself. The term "parsec" was coined by the British astronomer Herbert Hall Turner in 1913. He sought a convenient unit for astronomers that directly reflected the observational method. The name is a portmanteau derived from "parallax of one arcsecond". It quickly gained acceptance within the astronomical community due to its practical connection to parallax measurements, which were (and still are) a fundamental way to determine distances to nearby stars.
Common Uses for versts and parsecs
Explore the typical applications for both Versta (imperial/US) and Parsec (imperial/US) to understand their common contexts.
Common Uses for versts
The Versta was primarily used for:
- Measuring Travel Distances: It was the standard unit for road distances between towns and cities in Imperial Russia. Maps, travel guides, and road markers all used Versts.
- Postal System: Distances for mail delivery and stagecoach routes were measured in Versts.
- Literature: The Versta frequently appears in Russian literature of the 18th and 19th centuries (e.g., works by Pushkin, Gogol, Tolstoy, Chekhov) to describe journeys and distances, adding historical context.
- Military: Used for measuring marching distances and geographical surveys.
Its use today is purely historical or literary.
Common Uses for parsecs
The parsec is the preferred unit of distance in professional astronomy and astrophysics:
- Stellar Distances: Measuring distances to nearby stars using parallax.
- Galactic Structure: Describing distances within the Milky Way galaxy (often using kiloparsecs, kpc, where 1 kpc = 1000 pc). For example, the Sun is about 8 kpc from the Galactic Center.
- Extragalactic Distances: Measuring distances to other galaxies and galaxy clusters (often using megaparsecs, Mpc, where 1 Mpc = 1,000,000 pc). The Hubble constant, describing the expansion of the universe, is typically expressed in (km/s)/Mpc.
- Cosmology: Discussing large-scale structures and distances in the universe (using Mpc and sometimes gigaparsecs, Gpc, where 1 Gpc = 1000 Mpc).
Frequently Asked Questions
Questions About Versta (versta)
How long is a Versta?
A standard Versta is exactly:
- 1066.8 meters
- 1.0668 kilometers
- Approximately 0.6629 miles
- Approximately 3500 feet
- Exactly 500 sazhenes
What were the main related Russian units?
The Versta was part of the Imperial Russian system of measures:
- 1 Versta = 500 Sajenes (саже́нь)
- 1 Sajene = 3 Arshins (арши́н) ≈ 2.13 m / 7 ft
- 1 Arshin = 16 Vershoks (вершо́к) ≈ 71.1 cm / 28 in
- 1 Vershok ≈ 4.445 cm / 1.75 in
Was there more than one type of Versta?
Yes, besides the standard "travel" Versta (500 sazhenes), there was a Mezhevaya Versta ("boundary versta") used for land surveying, which was equal to 1000 sazhenes (about 2.13 km). The 500-sajene Versta was far more common.
Is the Versta still used today?
No, the Versta is obsolete. It was officially replaced by the kilometer and meter when Russia adopted the metric system in the early 20th century (mandatory from 1925). Its use is now confined to historical contexts and literature.
How does a Versta compare to a kilometer or a mile?
- A Versta is slightly longer than a kilometer: 1 Versta ≈ 1.07 km.
- A Versta is significantly shorter than a mile: 1 Versta ≈ 0.66 miles (roughly two-thirds of a mile). Conversely, 1 mile ≈ 1.51 Versts.
Is the Versta an SI unit?
No, the Versta is not an SI unit. It is a traditional unit from the historical Russian system of measurement. The SI base unit for length is the meter (m).
About Parsec (pc)
What does 'Parsec' stand for?
Parsec is a blend of "parallax of one arcsecond". It represents the distance at which the parallax angle of a star is exactly one second of arc.
How is a parsec defined?
It's defined based on trigonometry. Imagine a right-angled triangle in space where the short side is the Earth-Sun distance (1 AU). The parsec is the length of the adjacent side when the angle at the distant star (the parallax angle) is exactly one arcsecond.
Is a Parsec bigger than a Light Year?
Yes, one parsec is significantly larger than one light-year.
- 1 Parsec ≈ 3.26 light-years
How many meters or kilometers are in a parsec?
One parsec is approximately:
- 3.0857 × 10¹⁶ meters
- 30.857 trillion kilometers
How many Astronomical Units (AU) are in a parsec?
One parsec is equal to approximately 206,265 AU. This number arises directly from the definition involving radians and arcseconds (specifically, the number of arcseconds in a radian).
Why do astronomers use parsecs instead of light-years?
While both are used, parsecs are often preferred in professional contexts because:
- Direct Observational Link: The parsec is derived directly from the parallax angle, a primary method for measuring distance.
- Historical Convention: It became the standard unit early in the development of stellar distance measurement.
- Convenience: Multiples like kpc and Mpc provide convenient scales for galactic and extragalactic distances.
- Definition Stability: The definition of a light-year depends slightly on the definition of a "year" (e.g., Julian year), whereas the parsec is based on the fixed AU and geometric angles.
Is the parsec an SI unit?
No, the parsec is not an SI unit. The SI unit for length is the meter (m). However, the parsec (along with the astronomical unit and light-year) is recognized by the International Astronomical Union (IAU) and is widely accepted for use in astronomy.
Conversion Table: Versta to Parsec
| Versta (versta) | Parsec (pc) |
|---|---|
| 1 | 0 |
| 5 | 0 |
| 10 | 0 |
| 25 | 0 |
| 50 | 0 |
| 100 | 0 |
| 500 | 0 |
| 1,000 | 0 |
All Length Conversions
Other Units from Length
- Meter (m)
- Kilometer (km)
- Hectometer (hm)
- Decimeter (dm)
- Centimeter (cm)
- Millimeter (mm)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical Mile (NM)
- Micrometer (μm)
- Nanometer (nm)
- Light Year (ly)
- Astronomical Unit (AU)
- Angstrom (Å)
- Point (Typography) (pt)
- Mil/Thou (mil)
- Fathom (fath)
- Furlong (fur)
- Link (Gunter's) (li)
- Pace (pace)
- Span (span)
- Digit (digit)
- Cable Length (cb)
- Ell (ell)
- Finger (finger)
- Roman Mile (m.p.)
- Stadion (stadion)
- Chi (Chinese) (chi)
- Shaku (Japanese) (shaku)
- Li (Chinese) (li)
- Toise (toise)
- Bolt (bolt)
- Rope (rope)
- Smoot (smoot)
- Sajene (sajene)
- Ken (ken)
- Wa (wa)
- Vara (vara)
- Aln (aln)
- Cubit (Royal/Egyptian) (cubit)
- Arpent (arpent)
- Ri (Japanese) (ri)
- Klafter (klafter)
- Yojana (yojana)
- Skein (skein)