Persian units of measurement Ancient Persian units Length

| Persian_unit | Persian_name | Relation_to_previous_unit | Metric_Value | Imperial_Value_ |
|---|---|---|---|---|
| league, the distance a horse could walk in one hour. | parasang | 250 chebel | ≈ 6 km | ≈ 3.75 miles |
| mansion, one day`s march on the Royal Road. | (Greek stathmos) | 4 or 5 parasang | ≈ 24–30 km | ≈ 14–18 miles |