Historical English measures
Convert rods, chains, furlongs, and other English lengths using a modern SI yard reference.
Your inputs
Enter an amount and select the source and target units. Results update as you edit.
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Your result
Complete the inputs to see your result.
How it works
- Converted estimate = Amount × Conversion factor
- Yard = 0.9144 m; Rod / pole / perch = 5.5 × Yard
- Chain = 22 × Yard; Furlong = 220 × Yard; Mile = 1760 × Yard
Assumptions and limitations
Historical English ratios are normalized to the 1963 SI yard (0.9144 m). This does not reconstruct medieval or pre-1963 physical standards.
Sources
- UK Weights and Measures Act 1878 — traditional ratios Sources reviewed: 2026-10-05
- UK Weights and Measures Act 1963 — modern SI yard reference Sources reviewed: 2026-10-05
- NIST — Revised imperial length conversion factors Sources reviewed: 2026-10-05
