De parsec (symbool: pc) is een lengte-eenheid die wordt gebruikt om grote afstanden tot astronomische objecten buiten het zonnestelsel te meten.
| kilometer | voet | parsec | millimeter | micrometer | nanometer | mijl | decimeter |
|---|---|---|---|---|---|---|---|
| 1 | 3,280.8398950 | 3.2407792894444 × 10-14 | 1 000 000 | 1 000 000 000 | 1 000 000 000 000 | 0.6213712 | 10 000 |
| 0.0003048 | 1 | 9.8778952742264 × 10-18 | 304.8 | 304 800 | 304 800 000 | 0.0001894 | 3.048 |
| 30 856 775 814 914 | 1.0123614112504 × 1017 | 1 | 3.0856775814914 × 1019 | 3.0856775814914 × 1022 | 3.0856775814914 × 1025 | 19 173 511 576 713 | 3.0856775814914 × 1017 |
| 1.0 × 10-6 | 0.0032808 | 3.2407792894444 × 10-20 | 1 | 1 000 | 1 000 000 | 6.2137119223733 × 10-7 | 0.01 |
| 1.0 × 10-9 | 3.2808398950131 × 10-6 | 3.2407792894444 × 10-23 | 0.001 | 1 | 1 000 | 6.2137119223733 × 10-10 | 1.0 × 10-5 |
| 1.0 × 10-12 | 3.2808398950131 × 10-9 | 3.2407792894444 × 10-26 | 1.0 × 10-6 | 0.001 | 1 | 6.2137119223733 × 10-13 | 1.0 × 10-8 |
| 1.609344 | 5 280 | 5.2155287047915 × 10-14 | 1 609 344 | 1 609 344 000 | 1 609 344 000 000 | 1 | 16,093.44 |
| 0.0001 | 0.3280840 | 3.2407792894444 × 10-18 | 100 | 100 000 | 100 000 000 | 6.2137119223733 × 10-5 | 1 |
| 1 parsecs = 30856775814913700 meter |
| 2 parsecs = 61713551629827400 meter |
| 3 parsecs = 92570327444741100 meter |
| 4 parsecs = 123427103259654800 meter |
| 5 parsecs = 154283879074568500 meter |