Convert Rod to Inch
Convert rods to inches instantly. 1 rod = 198 inch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Inch to Rod converter for the reverse conversion.
Units explained
Rod
A rod is an Imperial unit of length equal to 16.5 feet (about 5.03 m). It is also called a perch or pole. Used historically in English and American land surveying.
The rod derives from medieval English land-surveying practice. Standardised at 16.5 feet (= 25 links of a surveyor's chain = 1/4 chain) by Edmund Gunter in 1620.
Rods are the standard unit in legacy US public-land-survey records, where lot dimensions are typically expressed in rods and chains. Modern surveyors generally use feet or meters but legacy deeds remain in rods.
Defined by Edmund Gunter in 1620 as 16.5 feet via the chain-based survey system; became exact via the 1959 International Yard and Pound Agreement.
Inch
An inch is an Imperial and US customary unit of length defined since 1959 as exactly 25.4 millimeters (0.0254 meters). It is still the standard small unit of length in the United States, the United Kingdom (informally), and a few other countries.
The inch derives from the Roman uncia (one-twelfth of a foot) and survived through Anglo-Saxon and medieval English measurement systems. Various definitions persisted regionally until the 1959 International Yard and Pound Agreement standardized the inch globally as exactly 25.4 mm.
Inches are used in the US and UK for body height, screen sizes (TVs, monitors, phones), tire sizes, plumbing, lumber, paper sizes (US Letter is 8.5 × 11 in), and most consumer product specifications in the United States.
Anglo-Saxon origin (predating 1066); standardized to 25.4 mm exactly by the International Yard and Pound Agreement of 1959, signed by the US, UK, Canada, Australia, New Zealand, and South Africa.
Rod to Inch conversion formula
The relationship between rods and inches:
To convert rods to inches, multiply the value in rods by 198. To reverse, multiply inches by 0.0050505051.
How to use this converter
Type a value into the calculator. The result in inches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Inch to Rod converter for the reverse direction.
Step-by-step: convert rods to inches
- Write down the value in rods (rd).
- Multiply that value by the factor 198.
- The product is the equivalent value in inches (in).
- To reverse, multiply the inch value by 0.0050505051.
Worked examples
Example 1 — Convert 1 rd to in:
1 × 198 = 198 in
Example 2 — Convert 100 rd to in:
100 × 198 = 19800 in
Real-world example — Body height conversion (reverse direction)
You measure 1.75 rods tall and need to fill in a gym membership form or medical record that asks for height in inches. This is the most-used everyday length conversion in metric-using countries.
1.75 rd × 198 = 346.5 in
Real-world example — Pet and accessory dimensions
A 3-rod dog leash equals a tidy round value in inches. Pet-supply shopping frequently mixes the two units across product specifications.
3 rd × 198 = 594 in
Real-world example — Fabric and tailoring
One rod of fabric converts to a value in inches commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 rd × 198 = 198 in
Rod to Inch conversion table
Standard reference values for converting rods to inches:
| Rod [rd] | Inch [in] |
|---|---|
| 0.01 | 1.98 |
| 0.1 | 19.8 |
| 1 | 198 |
| 2 | 396 |
| 3 | 594 |
| 4 | 792 |
| 5 | 990 |
| 10 | 1980 |
| 20 | 3960 |
| 30 | 5940 |
| 40 | 7920 |
| 50 | 9900 |
| 100 | 19800 |
| 500 | 99000 |
| 1000 | 198000 |
Frequently asked questions
How many inches is 1 rod?
How do I convert rods to inches?
How do I convert inches back to rods?
How many inches is 100 rods?
Popular length unit conversions
Convert Rod to other length units
Show all Rod conversions
Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 rd = 198 in) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.