Acres to Square Feet Converter
Convert acres to square feet and 7 other area units. Includes landmark comparisons, lot equivalents, and a visual size reference chart.
Mile Conversion Calculator
Convert miles to kilometers, meters, feet, yards, nautical miles, and more. Includes race distance references and world city-pair distances.
26.20 mi = 42.16 km
Relative to a marathon (26.2 mi)
100.0% of a marathon
Miles⧉
26.20
1 mile = 5,280 feet
Kilometers⧉
42.16
1 km ≈ 0.6214 miles
Meters⧉
42,164.81
1 mile = 1,609.344 m
Feet⧉
138,336.00
1 mile = 5,280 ft
Yards⧉
46,112.00
1 mile = 1,760 yd
Nautical Miles⧉
22.77
1 nmi = 1.15078 mi
Track Laps (¼ mi)⧉
104.80
Standard ¼-mile oval track
Inches⧉
1,660,032.00
1 mile = 63,360 inches
Common Distance References
| Distance | Miles | Kilometers | Meters | Feet |
|---|---|---|---|---|
| Quarter mile (drag strip) | 0.25 | 0.40 | 402.00 | 1,320.00 |
| Half mile | 0.50 | 0.80 | 805.00 | 2,640.00 |
| 1 mile (4 track laps) | 1.00 | 1.60 | 1,609.00 | 5,280.00 |
| 5K race | 3.10 | 5.00 | 4,989.00 | 16,368.00 |
| 10K race | 6.20 | 10.00 | 9,978.00 | 32,736.00 |
| Half marathon | 13.10 | 21.10 | 21,082.00 | 69,168.00 |
| Marathon | 26.20 | 42.20 | 42,165.00 | 138,336.00 |
| Ultramarathon (50 mi) | 50.00 | 80.50 | 80,467.00 | 264,000.00 |
| Century ride (cycling) | 100.00 | 160.90 | 160,934.00 | 528,000.00 |
| Earth → Moon | 238,900.00 | 384,472.30 | 384,472,282.00 | 1,261,392,000.00 |
| Earth → Sun (1 AU) | 92,960,000.00 | 149,604,618.20 | 149,604,618,240.00 | 490,828,800,000.00 |
World City-to-City Distances
| From | To | Miles | Kilometers |
|---|---|---|---|
| New York | Los Angeles | 2,451.00 | 3,945.00 |
| London | Paris | 213.00 | 343.00 |
| Tokyo | Seoul | 714.00 | 1,149.00 |
| Sydney | Melbourne | 545.00 | 877.00 |
| New York | London | 3,459.00 | 5,567.00 |
| San Francisco | Honolulu | 2,397.00 | 3,858.00 |
| Dubai | Singapore | 3,658.00 | 5,887.00 |
| North Pole | South Pole | 12,430.00 | 20,004.00 |
Planning notes, formulas, and examples
About the Mile Conversion Calculator
The mile remains the standard unit for road distances, speed limits, and race lengths across the United States, the United Kingdom, and several other countries. Yet scientific, aviation, and international contexts demand kilometers, meters, nautical miles, or other units. A reliable mile converter that handles all of these is an everyday necessity for runners, drivers, pilots, and engineers.
This mile conversion calculator supports ten conversion directions — miles to/from kilometers, meters, feet, yards, and nautical miles — with up to 10-decimal-place precision. Preset buttons load common values like 5K, marathon, and century-ride distances. Eight output cards display the result in every relevant unit simultaneously, including track laps and total inches for niche applications.
A comprehensive distance reference table lists race distances from the quarter mile to astronomical scales, and a collapsible world city-to-city distance table adds real-world context. Whether you are planning a road trip, analyzing race splits, converting aviation waypoints, or just satisfying curiosity, the page keeps the surrounding units and reference distances together.
When This Page Helps
Runners track race distances in both miles and kilometers. Pilots convert between statute and nautical miles. International travelers compare road signage. Keeping all of these units together with reference distances reduces conversion mistakes across planning, navigation, and reporting tasks.
How to Use the Inputs
- Select a conversion direction from the ten available pairings (e.g., Miles → Kilometers).
- Enter the numeric value in the input field.
- Adjust decimal precision if the default four places are not sufficient.
- Click a preset button to load common distances like marathon (26.2 mi) or 10 km.
- Read the primary result in the bold banner at the top.
- Review eight output cards for the equivalent in miles, km, m, ft, yd, nmi, laps, and inches.
- Scroll to the distance reference table or expand the world city distances for context.
Formula used
Miles to Kilometers: km = mi × 1.609344 | Kilometers to Miles: mi = km ÷ 1.609344. Also: 1 mi = 5,280 ft = 1,760 yd = 1,609.344 m ≈ 0.86898 nmi.Example Calculation
Result: 26.2 mi = 42.165 km
26.2 miles × 1.609344 = 42.165 km. A marathon is 42.195 km officially (26.2188 mi); the slight difference comes from the rounded 26.2 mi commonly quoted.
Tips & Best Practices
- Quick mental estimate: 1 mile ≈ 1.6 km. Multiply miles by 8 then divide by 5 for a fast approximation.
- For running, 1 km ≈ 0.621 miles — so a 5K is about 3.1 miles and a 10K is about 6.2 miles.
- Nautical miles are used in aviation and shipping; don't confuse them with statute miles on road signs.
- GPS devices may report in either miles or km — use the page to verify conversions.
- The "quarter mile" drag strip is exactly 1,320 feet or 402.336 meters.
- For ultra-precise surveying, note that the US Survey Mile (pre-2023) differs from the international mile by about 3.2 mm.
A Brief History of the Mile
The word "mile" comes from the Latin *mille passus* (a thousand paces), the Roman unit of about 4,854 feet. Over centuries, the English mile evolved to today's statute mile of 5,280 feet, standardized by an act of Parliament in 1593. The international agreement of 1959 defined the inch as exactly 25.4 mm, which fixed the mile at exactly 1,609.344 meters for all time.
Miles in Running and Cycling
Road races worldwide use both miles and kilometers. US events post mile markers; European events use kilometer markers. Runners converting pace (min/mi to min/km) use the 1.609344 factor constantly. Cyclists measure century rides in miles (100 mi = 160.9 km) or metric centuries (100 km = 62.1 mi). The race-distance presets help flip between systems without recalculating the common benchmarks each time.
Statute Miles vs. Nautical Miles
Nautical miles are based on the geometry of the Earth: one nautical mile equals one minute of latitude. At 1.15078 statute miles, a nautical mile is about 15% longer. Aviation altitudes are in feet, speeds in knots (nmi/h), and distances in nautical miles. Converting between the two is critical for flight planning and maritime charting.
Sources & Methodology
Last updated:
Frequently Asked Questions
Exactly 1.609344 kilometers. This is a defined conversion factor, not a rounded approximation.
There are exactly 5,280 feet in one statute mile. This fixed value is used in surveying, mapping, and roadway design.
A statute mile is 5,280 feet (1.609 km). A nautical mile is 6,076 feet (1.852 km) — about 15% longer. Nautical miles are used in aviation and maritime navigation.
A 5K equals approximately 3.107 miles. This is why most runners round it to 3.1 miles in training plans.
A marathon is officially 42.195 km, which is 26.2188 miles — commonly rounded to 26.2 mi.
The US never fully adopted the metric system. Road signs, speed limits, and legal land descriptions remain in miles by law and custom, making conversion tools essential for international contexts.
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