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Kecepatan Rata-Rata Kalkulator

Cara tercepat untuk menghitung kecepatan, jarak, dan waktu dengan presisi.

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Average Speed Definition

Average speed equals the total distance traveled divided by the total time taken to cover that distance. The Average Speed Calculator computes this value in miles per hour (mph), kilometers per hour (km/h), meters per second (m/s), and feet per second (ft/s).

Average speed is a scalar quantity — it has magnitude but no direction. A car that drives 200 miles (321.9 km) in 4 hours has an average speed of 50 mph (80.5 km/h), regardless of the route taken or direction changes during the trip.

The Speed Distance Time Calculator uses 3 variables: speed, distance, and time. Knowing any 2 of these values lets you calculate the third using the average speed formula.

Build the Definition

Click the correct terms to complete the formula

Average Speed =
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Average Speed Formula

The Average Speed formula is Speed = Distance / Time (s = d/t). Rumus ini memiliki 3 penyusunan ulang yang menyelesaikan variabel yang tidak diketahui:

  1. s = d / t — speed equals distance divided by time
  2. d = s × t — distance equals speed times time
  3. t = d / s — time equals distance divided by speed

The output unit depends on the input units. Distance in miles and time in hours produces miles per hour (mph). Distance in kilometers and time in hours gives kilometers per hour (km/h). Distance in meters and time in seconds yields meters per second (m/s).

Formula Triangle

Click any variable to see its formula

D S T DISTANCE SPEED TIME
Click a variable above

How to Calculate Average Speed

To calculate the average speed, follow these 3 steps:

  • Step 1: Measure the total distance traveled in miles, kilometers, or meters. Use a car's odometer, Google Maps, or a GPS device to record the distance.
  • Step 2: Record the total time taken in hours, minutes, or seconds. Subtract any rest stops from the total trip duration to get actual travel time.
  • Step 3: Divide distance by time menggunakan rumus: Kecepatan = Jarak / Waktu (s = d/t) .

Example: A car covers 250 miles (402.3 km) in 5 hours. Average speed = 250 / 5 = 50 mph (80.5 km/h).

For trips with stops, subtract idle time. A bus travels 180 miles (289.7 km) in 4 hours with 30 minutes of stops. Travel time = 3.5 hours. Average speed = 180 / 3.5 = 51.4 mph (82.8 km/h).

Step-by-Step Walkthrough

Click each step to complete it

1
Measure distance: 250 miles (402.3 km)
2
Record time: 5 hours (no stops)
3
Calculate: 250 ÷ 5 = 50 mph (80.5 km/h)

How to Use this Average Speed Calculator

To use this Average Speed Calculator, follow 3 steps:

  • Step 1: Select the calculation mode — choose Speed, Distance, or Time from the mode selector at the top of the calculator.
  • Step 2: Enter known values into the distance input and time input fields. Select the measurement units from the dropdown menus (miles, kilometers, meters, hours, minutes, seconds).
  • Step 3: Click the calculate button to view results in the result display area. The calculator shows the answer with a step-by-step formula breakdown and automatic unit conversions.

The Average Speed Calculator supports input in hh:mm:ss format and converts between mph, km/h, m/s, and ft/s automatically.

Calculator Guide

Click each step to walk through the process

1
Select mode: Speed / Distance / Time
2
Enter values: Distance = 120 mi, Time = 2 hr
3
Result: 60 mph (96.6 km/h)

Average Speed Calculator With Distance and Time

Untuk menghitung kecepatan rata-rata dengan jarak dan waktu, masukkan total jarak yang ditempuh dan waktu tempuh ke dalam Kalkulator Waktu Jarak Kecepatan. Rumusnya kecepatan = jarak / waktu (s = d/t) menghasilkan hasilnya.

Example 1: A cyclist rides 30 miles (48.3 km) in 2 hours. Average speed = 30 / 2 = 15 mph (24.1 km/h).

Example 2: A train covers 200 kilometers (124.3 miles) in 2.5 hours. Average speed = 200 / 2.5 = 80 km/h (49.7 mph).

The Average Speed Calculator accepts distance in miles, kilometers, or meters and time in hours, minutes, or seconds. The formula engine handles all unit conversions automatically.

Quick Speed Calculator

Enter distance and time to calculate speed

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Average Speed Calculator Without Time

To find travel time without knowing time directly, rearrange the average speed formula to waktu = jarak / kecepatan (t = d/s) . Enter the known distance and speed values to compute travel time.

To find distance when distance is unknown, use distance = speed × time (d = s × t) .

Example: A bus travels 120 miles (193.1 km) at an average speed of 40 mph (64.4 km/h). Time = 120 / 40 = 3 hours.

This rearrangement is useful for trip planning — enter the distance from Google Maps and the expected average speed to estimate the total trip duration before departure.

Time Finder

Adjust distance and speed to compute travel time

Time = 2.50 hours (2h 30m)

Average Speed Calculator for Multiple Speeds

The correct method to calculate average speed for equal distances at different speeds is the harmonic mean, not the arithmetic mean. The arithmetic mean gives an incorrect result because the object spends more time at the slower speed.

Average Speed = 2 × (S₁ × S₂) / (S₁ + S₂)

Example: A car drives 60 mph (96.6 km/h) for the first half and 40 mph (64.4 km/h) for the second half of an equal-distance trip. The arithmetic mean = 50 mph (wrong). The harmonic mean = 2 × (60 × 40) / (60 + 40) = 48 mph (77.2 km/h) (correct).

The harmonic mean produces a lower value than the arithmetic mean because the vehicle spends more time traveling at the slower speed, which pulls the average speed calculation down.

Harmonic Mean Calculator

Enter 2 speeds for equal distances — see correct vs incorrect average

✗ Arithmetic Mean (Wrong)
50.00 mph
✓ Harmonic Mean (Correct)
48.00 mph

Average Speed Calculator with Hours and Minutes

Convert time in hours, minutes, and seconds (hh:mm:ss) to decimal hours before applying the Average Speed formula. The conversion formula:

Decimal Hours = Hours + (Minutes / 60) + (Seconds / 3600)

Example: 2 hours 30 minutes 45 seconds = 2 + (30/60) + (45/3600) = 2 + 0.5 + 0.0125 = 2.5125 hours.

A trip of 150 miles (241.4 km) in 2 hours 30 minutes 45 seconds = 150 / 2.5125 = 59.7 mph (96.1 km/h).

The Average Speed Calculator accepts time in hh:mm:ss format directly and converts to decimal hours automatically.

Time Format Converter

Enter hours, minutes, seconds to get decimal hours

Decimal Hours 2.5125 hours

Average Speed Calculator for Multiple Legs

For trips with multiple legs, add the total distance traveled across all segments and divide by the total time taken. Each leg may have a different speed and distance across varying terrain types.

Example: A delivery van completes 3 legs:

  • Babak 1: 120 mil (193,1 km) dalam 2 jam = 60 mph
  • Babak 2: 90 mil (144,8 km) dalam 1,5 jam = 60 mph
  • Babak 3: 60 mil (96,6 km) dalam 1 jam = 60 mph

Total distance = 270 miles (434.5 km). Total time = 4.5 hours. Average speed = 270 / 4.5 = 60 mph (96.6 km/h).

This method applies for last-mile delivery vans, bicycle courier routes, and any multi-segment journey with stops.

Multi-Leg Calculator

Enter distance and time per leg — totals update live

Leg Distance (mi) Time (hrs) Speed (mph)
Leg 1 60.0
Leg 2 60.0
Leg 3 60.0
Total 270.0 4.50 60.00

Units of Average Speed

Average speed uses distance-per-time units. The 4 most common units are:

  • 1. Miles per hour (mph) — used in the United States and United Kingdom for road speed
  • 2. Kilometers per hour (km/h) — used in most countries worldwide for automotive speed
  • 3. Meters per second (m/s) — the SI base unit for speed, used in scientific contexts
  • 4. Feet per second (ft/s) — used in engineering and some physics applications

Conversion factors: 1 mph = 1.60934 km/h = 0.44704 m/s = 1.46667 ft/s. The metric unit of speed in the International System of Units (SI) is meters per second (m/s).

Live Unit Converter

Enter a speed value and select the input unit

60.000 mph
96.561 km/h
26.822 m/s
88.000 ft/s

Average Speed vs. Average Velocity

Average speed is a scalar quantity — it equals total distance traveled divided by total time taken and has no direction. Average velocity is a vector quantity — it equals total displacement divided by total time and includes direction.

For a round trip with the same start and end point, average speed is greater than zero because total distance traveled is always positive. Average velocity for a round trip equals zero because displacement (net change in position) equals zero.

Example: A car drives 100 miles (160.9 km) east and returns 100 miles west in 4 hours total. Total distance = 200 miles (321.9 km). Displacement = 0 miles. Average speed = 200 / 4 = 50 mph. Average velocity = 0 / 4 = 0 mph. Use the Displacement Calculator to find displacement for specific paths.

Average Speed

Scalar quantity (magnitude only)

= Total Distance / Time

Always ≥ 0

Round trip: 50 mph

VS
Average Velocity

Vector quantity (magnitude + direction)

= Displacement / Time

Can be zero or negative

Round trip: 0 mph

Jalur Perjalanan Pulang Pergi

Perhatikan titik bergerak keluar dan mundur — jarak bertambah, perpindahan kembali ke nol

Mulai/Akhir Titik Perputaran

Average Speed vs Instantaneous Speed

Average speed covers the entire trip — total distance traveled divided by total time taken. Instantaneous speed is the speed at one specific moment, displayed on a speedometer or GPS device.

A car's speedometer shows instantaneous speed, which changes constantly during a trip. Average speed smooths all these speed variations into a single value for the entire journey.

Example: A car trip shows speedometer readings between 30 mph (48.3 km/h) and 70 mph (112.7 km/h) at various moments during peak congestion periods and highway stretches. The average speed for the entire 120-mile (193.1 km) trip over 2 hours = 60 mph (96.6 km/h).

Speedometer Comparison

Average stays constant while instantaneous fluctuates

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Rata-rata: Stabil
0102030405060708090100
Sesaat: Bervariasi

Average Speed Vs Constant Speed

Constant speed means an object covers equal distances in equal time intervals throughout the journey. Average speed equals total distance traveled divided by total time taken over the entire trip.

When an object moves at constant speed, average speed equals that constant speed. When speed varies — due to acceleration, deceleration, or stops — average speed differs from the speed at any given moment.

Example 1: A car using cruise control at 60 mph (96.6 km/h) on a highway has both a constant speed and an average speed of 60 mph.

Example 2: A car in city traffic varies between 0 mph and 45 mph (72.4 km/h) during school zone hours and peak congestion periods, with an average speed of 25 mph (40.2 km/h).

Constant vs Varying Speed

Both dots finish at the same time — same average speed, different patterns

Constant
Varying

Average Speed from Speed-Time Graph

The area under a speed-time graph represents total distance traveled. To find average speed from a speed-time graph, follow 3 steps:

  1. Calculate the total area under the speed curve using geometric shapes (rectangles, triangles, trapezoids).
  2. Read the total time from the horizontal axis (start to end).
  3. Divide total area by total time: Average Speed = Total Area / Total Time.

For a rectangular region at constant speed, area = speed × time. For a triangular region with uniform acceleration from zero, area = ½ × base × height.

Speed-Time Graph

The shaded area equals total distance traveled

Average Speed from Velocity-Time Graph

A velocity-time graph shows velocity (speed with direction) over time. The area under the curve represents displacement, not total distance.

  1. Areas above the time axis indicate positive displacement (forward movement).
  2. Areas below the time axis indicate negative displacement (backward movement).

To find total distance from a velocity-time graph, sum the absolute values of all areas. Average speed = total distance / total time. Average velocity = net displacement / total time.

Velocity-Time Graph

Blue area = forward distance, Red area = backward distance

Common Mistakes When Calculating Average Speed

There are 5 common mistakes when calculating average speed. Click each card below to see the explanation and how to avoid the error.

Common Error
Using Arithmetic Mean Instead of Harmonic Mean
Saat menghitung kecepatan rata-rata untuk kecepatan berbeda pada jarak yang sama, mean aritmatika memberikan hasil yang salah. Gunakan mean harmonik: Kecepatan Rata-Rata = 2 x (S1 x S2) / (S1 + S2) . Kendaraan menghabiskan lebih banyak waktu pada kecepatan yang lebih lambat, yang menyebabkan rata-rata sebenarnya berada di bawah rata-rata sederhana.
Klik untuk menampilkan ->
Common Error
Forgetting to Subtract Rest Stops
Average speed uses actual travel time, not total elapsed time. Subtract rest stops, refueling breaks, and idle time from the total trip duration before dividing. A 5-hour trip with 1 hour of stops has 4 hours of travel time.
Klik untuk menampilkan ->
Common Error
Mixing Units Without Converting
Distance in miles with time in minutes produces an incorrect result unless converted. Convert minutes to hours (divide by 60), or kilometers to miles (multiply by 0.621371), before applying the formula speed = distance / time.
Klik untuk menampilkan ->
Common Error
Confusing Speed with Velocity
Kecepatan rata-rata menggunakan jarak total (skalar, selalu positif). Kecepatan rata-rata menggunakan perpindahan (vektor, bisa nol untuk perjalanan pulang pergi). Sebuah mobil yang melaju sejauh 100 mil dan 100 mil kembali memiliki kecepatan rata-rata > 0 tetapi kecepatan rata-rata = 0.
Klik untuk menampilkan ->
Common Error
Using Instantaneous Readings for Average
A speedometer or GPS shows instantaneous speed at one moment, not average speed. Average speed requires total distance traveled divided by total time taken. Instantaneous speed readings during peak congestion periods or highway stretches do not represent the overall average.
Klik untuk menampilkan ->

Average Speed Examples and Practice Questions

Practice these 5 average speed calculation problems. Click "Show Solution" to see the step-by-step answer for each question.

Q1: A runner covers 10 km (6.21 miles) in 50 minutes. Calculate the runner's average speed in km/h and mph.

Step 1: Convert time: 50 minutes = 50 / 60 = 0.833 hours.

Step 2: Apply formula: Speed = Distance / Time = 10 / 0.833 = 12.0 km/h.

Step 3: Convert: 12.0 km/h × 0.621371 = 7.46 mph.

Q2: A car travels 180 miles (289.7 km) in 3 hours 15 minutes. Find the average speed in mph.

Step 1: Convert time: 3h 15m = 3 + (15/60) = 3.25 hours.

Step 2: Apply formula: Speed = 180 / 3.25 = 55.38 mph (89.13 km/h).

Q3: A cyclist rides 25 km (15.53 miles) at 20 km/h, then 25 km at 30 km/h. Calculate the average speed for the entire trip.

Step 1: Time for leg 1: 25 / 20 = 1.25 hours.

Step 2: Time for leg 2: 25 / 30 = 0.833 hours.

Step 3: Total distance = 50 km. Total time = 2.083 hours.

Step 4: Average speed = 50 / 2.083 = 24.0 km/h (14.91 mph). Note: the answer is NOT 25 km/h (the arithmetic mean).

Q4: A train departs at 9:00 AM and arrives at 11:45 AM, covering 330 km (205 miles). Find the average speed.

Step 1: Calculate time: 11:45 - 9:00 = 2 hours 45 minutes = 2.75 hours.

Step 2: Apply formula: Speed = 330 / 2.75 = 120 km/h (74.56 mph).

Q5: A car drives 60 km at 40 km/h and returns at 60 km/h. Find the average speed for the round trip.

Step 1: Time going: 60 / 40 = 1.5 hours.

Step 2: Time returning: 60 / 60 = 1.0 hours.

Step 3: Total distance = 120 km. Total time = 2.5 hours.

Step 4: Average speed = 120 / 2.5 = 48 km/h (29.83 mph). The harmonic mean gives the correct answer for equal-distance round trips.

Kalkulator Kecepatan Rata-Rata Lainnya

Keluarga Kalkulator Kecepatan Rata-rata mencakup setiap masalah kecepatan yang mungkin Anda temui — mulai dari bersepeda dan hiking hingga fisika molekul gas, mekanika orbital, pengujian broadband, dan kecepatan membaca. Setiap kalkulator di bawah ini dibuat khusus untuk skenarionya, dengan rumus, masukan, dan visualisasi interaktifnya sendiri.

Olahraga & Kebugaran

🚴 Kalkulator Kecepatan Rata-Rata Sepeda Hitung kecepatan bersepeda rata-rata dari jarak berkendara dan total waktu. 🏁 Kalkulator Kecepatan Putaran Rata-rata Kecepatan rata-rata dalam beberapa putaran menggunakan panjang lintasan dan total waktu. 🏃 Kalkulator Kecepatan Rata-Rata Treadmill Kecepatan treadmill rata-rata berdasarkan jarak, waktu, dan kemiringan. 🚶 Kalkulator Kecepatan Rata-Rata Berjalan Kecepatan berjalan rata-rata dengan perkiraan langkah per menit dan kalori. 🥾 Kalkulator Kecepatan Rata-Rata Mendaki Kecepatan pendakian rata-rata yang dikoreksi Naismith dengan faktor pendakian. 🚣 Kalkulator Kecepatan Rata-Rata Mendayung Kecepatan mendayung rata-rata dari split 500 m atau jarak/waktu. ⏱️ Kalkulator Kecepatan Putaran Kecepatan satu putaran dari panjang putaran dan waktu putaran. 🚤 Kalkulator Kecepatan Rata-Rata Perahu Kecepatan rata-rata perahu di knots, mph dan km/h. ⚾ Kalkulator Kecepatan Bola Rata-rata Kecepatan bola rata-rata untuk golf, baseball, sepak bola, dan tenis.

Fisika

⚛️ Kalkulator Kecepatan Molekul Rata-rata Kecepatan rata-rata molekul v̄ = √(8RT / πM) dari teori kinetik. 🔬 Kalkulator Kecepatan Partikel Rata-rata Kecepatan rata-rata partikel v = √(8kT / πm) dari suhu dan massa. 💧 Kalkulator Kecepatan Cairan Rata-rata Kecepatan rata-rata fluida v = Q / A dari laju aliran dan penampang. 🔄 Kalkulator Kecepatan Sudut Rata-rata ω = Δθ / Δt — kecepatan sudut dalam rad/s, RPM dan derajat/s. 🛰️ Kalkulator Kecepatan Orbital Rata-rata v = √(GM / r) — kecepatan orbit rata-rata di sekitar benda pusat mana pun. 📈 Kalkulator Kecepatan Rata-Rata RMS v_rms = √(3RT / M) — kecepatan akar rata-rata kuadrat partikel gas.

Internet & Data

📶 Kalkulator Kecepatan Broadband Rata-rata Kecepatan unduh / unggah rata-rata broadband di beberapa pengujian. 💾 Kalkulator Kecepatan Transfer Data Rata-rata Kecepatan transfer rata-rata berdasarkan ukuran file dan waktu transfer yang telah berlalu.

Cuaca & Alam

🌬️ Kalkulator Kecepatan Angin Rata-rata Kecepatan angin rata-rata dari beberapa pembacaan anemometer.

Produktivitas

📖 Kalkulator Kecepatan Membaca Rata-rata Membaca WPM dari jumlah kata dan waktu membaca yang telah berlalu.

Pertanyaan yang Sering Diajukan

Total jarak yang ditempuh dan total waktu yang ditempuh adalah 2 pengukuran yang diperlukan untuk menghitung kecepatan rata-rata. Rumus kecepatan = jarak / waktu (s = d/t) menggunakan 2 nilai ini untuk menghasilkan hasil dalam mil per jam (mph), kilometer per jam (km/h), atau meter per detik (m/s).

Ukur jarak yang ditempuh selama interval waktu tertentu dan bagi dengan waktu yang telah berlalu. Kecepatan rata-rata untuk suatu interval = jarak interval / interval waktu. Ini memberikan rata-rata tingkat perjalanan untuk segmen tersebut saja.

Tidak, kecepatan rata-rata selalu nol atau positif. Kelajuan rata-rata merupakan besaran skalar yang menggunakan jarak total (selalu positif) dibagi waktu total (selalu positif). Kecepatan rata-rata bisa bernilai negatif karena kecepatan mencakup arah.

Kecepatan rata-rata yang baik untuk berlari berkisar antara 5 mph (8 km/h) untuk pemula hingga 6-8 mph (9.7-12.9 km/h) untuk pelari tingkat menengah. Pelari maraton elit mempertahankan 12-13 mph (19.3-20.9 km/h). Gunakan kalkulator kecepatan lari atau perangkat GPS untuk melacak kecepatan lari selama strategi tempo maraton.

Kecepatan rata-rata yang baik untuk bersepeda adalah 12-15 mph (19.3-24.1 km/h) untuk pengendara biasa, 15-20 mph (24.1-32.2 km/h) untuk pengendara sepeda reguler, dan 20-28 mph (32.2-45.1 km/h) untuk kompetitif pengendara sepeda. Kecepatan bervariasi dengan penyesuaian rasio gigi, tekanan ban, dan jenis medan.

Tambahkan total jarak yang ditempuh di semua segmen. Tambahkan total waktu perjalanan antar perhentian, tidak termasuk waktu yang dihabiskan untuk berhenti. Bagi total jarak dengan total waktu perjalanan: Kecepatan Rata-rata = Total Jarak / Total Waktu Perjalanan.

Ya, atur ulang rumusnya menjadi waktu = jarak / kecepatan (t = d/s). Masukkan jarak dan kecepatan rata-rata ke dalam Kalkulator Kecepatan Rata-rata untuk menghitung waktu perjalanan dalam format jam, menit, atau hh:mm:ss.

Tidak, kecepatan rata-rata dan kecepatan rata-rata adalah besaran yang berbeda. Kecepatan rata-rata menggunakan total jarak yang ditempuh (skalar, selalu >= 0). Kecepatan rata-rata menggunakan perpindahan (vektor, termasuk arah, bisa 0 untuk perjalanan pulang pergi). Gunakan Displacement Calculator untuk penghitungan berbasis kecepatan.

Ukur jarak dalam kilometer dan waktu dalam jam, lalu bagi: kecepatan rata-rata (km/h) = jarak (km) / waktu (jam). Contoh: 150 km dalam 2 jam = 75 km/h (46,6 mph). Ubah mph menjadi km/h dengan mengalikannya dengan 1,60934.

Ukur jarak dalam mil dan waktu dalam jam, lalu bagi: kecepatan rata-rata (mph) = jarak (mil) / waktu (jam). Contoh: 120 mil dalam 2 jam = 60 mph (96,6 km/h). Ubah km/h menjadi mph dengan mengalikannya dengan 0,621371.

Ya, kecepatan rata-rata sama dengan nol hanya jika jarak total yang ditempuh sama dengan nol - benda tidak bergerak sama sekali. Setiap gerakan, bahkan kembali ke titik awal, menghasilkan kecepatan rata-rata lebih besar dari nol karena jarak totalnya positif.

Tambahkan jarak untuk kedua arah untuk mendapatkan jarak total. Tambahkan waktu untuk kedua arah untuk mendapatkan waktu total. Bagi total jarak dengan total waktu. JANGAN menghitung rata-rata kedua kecepatan secara aritmatika - gunakan rata-rata harmonik untuk jarak yang sama: Average Speed = 2 x (S1 x S2) / (S1 + S2).

Susun ulang rumus untuk memperoleh jarak dari nilai lain yang diketahui, lalu terapkan kecepatan = jarak / waktu. Tanpa referensi jarak atau kecepatan, kecepatan rata-rata tidak dapat dihitung - setidaknya 2 dari 3 variabel (kecepatan, jarak, waktu) harus diketahui.

Kemiringan grafik jarak-waktu mewakili kecepatan. Kecepatan rata-rata untuk satu perjalanan penuh = total kenaikan (perubahan jarak) / total lari (perubahan waktu) dari titik awal ke titik akhir pada grafik. Kemiringan yang lebih curam menunjukkan kecepatan yang lebih tinggi.

Hitung luas total di bawah kurva kecepatan-waktu, menggunakan nilai absolut untuk luas di bawah sumbu waktu. Jarak total = jumlah seluruh luas absolut. Kelajuan rata-rata = total jarak / total waktu. Kecepatan rata-rata = perpindahan total (luas di atas dikurangi luas di bawah) / waktu total.

Kelajuan rata-rata adalah besaran skalar - ia mempunyai besaran (angka dengan satuan seperti mph atau km/h) tetapi tidak memiliki arah. Kecepatan rata-rata adalah pasangan vektor yang mencakup besaran dan arah. Besaran skalar seperti kelajuan dan jarak berbeda dengan besaran vektor seperti kecepatan dan perpindahan.