🛣️ Mile Converter

Easily convert between miles and kilometers (km).
= 6.21 mile
= 8.05 km

Common Distances

1 Mile
1 mi
5K Run
5 km
10K Run
10 km
Half Marathon
21.1 km
Full Marathon
42.195 km
100 Miles
100 mi
Mile Conversion Guide
📌 What is a Mile?
• Mile is a unit of distance used in English-speaking countries
• 1 mile = 1.60934 kilometers
• 1 kilometer = 0.621371 miles
• Used in US, UK for road signs and speed measurements

💡 Conversion Formula
• km → mile: km × 0.621371
• mile → km: mile × 1.60934

🏃 Common Mile Distances
• 1 mile: 1.609km - Basic running unit
• 5K run: 3.107 miles
• 10K run: 6.214 miles
• Half marathon: 13.109 miles (21.1km)
• Full marathon: 26.219 miles (42.195km)

🚗 Miles in Driving/Speed
• US highway: 65mph = 105km/h
• City speed limit: 25-35mph = 40-56km/h
• 100 miles = 161km
• Rental car contracts use mile units

✈️ Miles in Travel/Aviation
• Airline mileage programs use miles
• Seoul-LA: about 5,800 miles
• Seoul-NYC: about 6,900 miles
• Seoul-London: about 5,500 miles

🏋️ Miles in Fitness
• Treadmill distance display
• 1 mile = average 15-20 min walk
• 1 mile = average 8-12 min run
• 10,000 steps = about 5 miles

✨ Tips
• Check mileage limits on rental car contracts in US
• GPS can be switched between km/mile units
• Set preferred units in running apps

Complete Mile to Kilometer Conversion Guide (2025)

01

Understanding Miles and Their History

The mile is a unit of distance used in the US, UK, and a few other countries. 1 mile = exactly 1.60934 kilometers. The mile originated from the Roman "mille passus" (thousand paces), where Roman armies defined 1 mile as the distance of 1,000 paces. Today, the statute mile is standard, used for road signs, speed limits, distance measurements, and airline mileage. At sea, the nautical mile (1.852km) is used. Globally, only the US, UK, Myanmar, and Liberia officially use miles, while most countries use kilometers. Travelers and drivers must master unit conversion.
02

Driving and Speed Limit Conversions

US road driving uses mph (miles per hour) for all speed limits. Highway speeds: 55-70mph = 89-113km/h (varies by state), some Texas sections 85mph = 137km/h (US max). City speeds: Residential 25mph = 40km/h, arterial roads 35-45mph = 56-72km/h, school zones 15-20mph = 24-32km/h. Speeding fines: +10mph warning, +15mph $150-300 fine, +25mph possible license suspension. Rental car driving: If speedometer is mph-only, conversion needed. To drive 100km/h, maintain ~62mph. Fuel efficiency: US uses MPG (miles per gallon). 30MPG ≈ 12.75km/L. Trip planning: LA-NYC 2,800mi = 4,500km (~40hr drive), LA-SF 380mi = 612km (6hr).
03

Marathon and Running Distances

Track and field internationally uses metric, but US also uses miles. Standard distances: 1 mile = 1,609m (4 laps + 9m), 5K = 3.107mi, 10K = 6.214mi, half marathon 21.1km = 13.109mi, full marathon 42.195km = 26.219mi (exactly 26mi 385yd). Track events: 1,600m ≈ 1 mile (actually 1,609m), US high school 1-mile record ~4min (elite). Pace calculation: 5min/km pace = 8:02/mi, 6min/km = 9:39/mi. Treadmills: US equipment shows mph. 6mph = 10min/mi pace = 9.7km/h, 8mph = 7:30/mi = 12.9km/h. Goals: Beginner 1mi 12-15min, intermediate 8-10min, advanced 6-7min, elite 4-5min. 10,000 steps = ~5mi = 8km.
04

Airline Mileage and Travel Distances

Airline mileage programs globally use miles. Major route distances: Seoul-Tokyo 750mi = 1,200km, Seoul-Bangkok 2,300mi = 3,700km, Seoul-LA 5,800mi = 9,300km, Seoul-NYC 6,900mi = 11,100km, Seoul-London 5,500mi = 8,900km, Seoul-Sydney 5,300mi = 8,500km. Mileage earning: Economy 100% accrual, Business 150%, First 200%. 5,000mi = SE Asia roundtrip, 12,000mi = North America one-way, 60,000mi = Business N.America roundtrip. Elite status: Korean Air Gold 50,000mi/year, Platinum 100,000mi/year. Miles vs km: Airlines display miles but actual flying distance is km. Value: 1 mile ≈ 1-2 cents value, maximum value in Business/First award tickets.
05

Rental Car Mileage Limits

US rental car contracts mostly offer unlimited mileage but some have limits. Common limits: Daily 150mi = 241km (local rentals), weekly 1,050mi = 1,690km, overage $0.25-0.50/mi. Unlimited vs limited: Unlimited costs $5-10/day extra but essential for long trips. 150mi limit insufficient for LA-SF roundtrip (760mi needed). One-way rentals: Different city drop-off has "drop-off fee" + separate mileage calculation. Odometer check: Photo pickup/return odometer mandatory. Prevents disputes between contract miles vs actual mileage. Fuel policy: "Full to Full" (pick up full, return full) most economical. Trip planning: Convert Google Maps km to miles to verify rental limits.
06

Daily Life and Real Estate Distances

US daily life expresses all distances in miles. Commute distance: Average commute 16mi = 26km (one-way), 1hr commute = 30-50mi = 48-80km. Real estate location: "Within 2 miles of school" = 3.2km, "5 miles to downtown" = 8km. Delivery radius: Food delivery 5mi = 8km, pizza delivery usually 3mi = 4.8km limit. Gas station spacing: Urban 1-2mi, rural 20-50mi = 32-80km (desert areas wider). Emergency services: 911 ambulance average 8min arrival = ~4mi radius coverage. Exercise: Neighborhood walk 1mi = 15-20min, bicycle 5mi = 20-30min. Shopping: Walmart/Target 10mi = 16km is "close" in US. School district: "Good school within 1 mile" = 1.6km is premium residential. Distance perception: Americans express distance as "30 minutes away" (time over miles).