About the Running Cadence Calculator
Running speed is just cadence (steps per minute) multiplied by step length. This running cadence calculator uses that relationship three ways: enter your pace and cadence to find your step length, your pace and step length to find cadence, or cadence and step length to find the pace you would run.
It is useful when your watch reports cadence but not step length, when you are trying to raise your cadence without slowing down, or when you want to understand why your pace changes on hills and in races. The calculator also shows the step length you would need at a cadence 5% higher than now, a common, research-backed starting point for runners trying to reduce impact at the knee and hip.
Step length here means the distance from one foot strike to the next foot strike (left to right). A full stride — left to left — is twice as long. Watches and apps are inconsistent about these terms, so check which one yours reports.
How to use the running cadence calculator
- 1Choose metric or imperial units.
- 2Pick what you want to find: step length, cadence or pace.
- 3Enter the two values you know, such as pace from your watch and cadence.
- 4Read the result plus speed, steps per km or mile, and stride length.
- 5Use the +5% numbers if you are gradually raising your cadence.
Formula and method
Every running speed is the product of how often your feet hit the ground and how far you travel per step. Rearranging the same equation gives step length = speed × 60 ÷ cadence, or cadence = speed × 60 ÷ step length. Pace per kilometre or mile is that distance divided by speed.
Steps per kilometre or mile is simply the distance divided by step length, which also equals cadence × pace in minutes. The +5% figures show the shorter step needed to keep the same pace at a higher cadence: Heiderscheit et al. (2011) found a 5–10% step-rate increase reduced loading at the knee and hip.
- Cadence
- Total steps per minute, both feet
- Step length
- Distance from one foot strike to the next
- Stride
- Two steps (same foot to same foot)
Worked examples
Step length at 5:30/km and 170 spm
5:30/km is 330 s per km, or 3.03 m/s. Step length = 3.03 × 60 ÷ 170 = 1.07 m. You take 170 × 5.5 = 935 steps per kilometre.
Cadence at 8:00/mile with a 45-inch step
8:00 per mile is 7.5 mph or 3.353 m/s. A 45-inch step is 1.143 m, so cadence = 3.353 × 60 ÷ 1.143 ≈ 176 spm, or 1,408 steps per mile.
Pace from 180 spm and a 120 cm step
180 steps × 1.20 m ÷ 60 = 3.6 m/s, which is 12.96 km/h. 1,000 m ÷ 3.6 m/s = 277.8 s, a 4:38 per km pace.
Frequently asked questions
Is 180 steps per minute the ideal running cadence?+
No single number fits everyone. The 180 figure came from observing elite runners at race pace. Taller runners and slower paces naturally have lower cadence; most recreational runners fall between about 155 and 185 spm.
Should I increase my running cadence?+
If you overstride or have knee pain, a modest increase of about 5–10% can reduce impact forces at the knee and hip. Raise it gradually, using a metronome or music at the target tempo, and keep your pace unchanged.
What is the difference between step length and stride length?+
A step is from one foot landing to the other foot landing. A stride is from one foot landing to that same foot landing again, so it is two steps. Some apps call step length "stride", so check before comparing.
Does cadence change with speed?+
Yes, but less than step length. Runners mostly speed up by taking longer steps, with cadence rising a little. Sprinting pushes both higher, with elite sprinters exceeding 260 steps per minute.
How do I measure my cadence without a watch?+
Count how many times your right foot lands in 30 seconds while running at your normal pace, then multiply by 4. That gives total steps per minute for both feet.