SplitLab

Running Cadence Calculator

170SPM

39.4in step

9:27 /mi · 170 SPM · 39.4 in step

/mi
mm:ss. Header US / Metric switches min/mile and min/km. Default 9:27 /mi is 5:52 /km.
SPM
Steps per minute. Integer stepper. Editing cadence recomputes step length at the same pace.
in
Distance per footstrike, not stride. Editing length recomputes cadence at the same pace. US inches, Metric metres.
in
Optional. Metric centimetres or US inches. Shows step length as a fraction of height — ratio guidance only, not medical.
Cadence
170SPM
Step length
39.4in

3′3.4″ · one footstrike

Stride length
78.9in

6′6.9″ · same foot to same foot

Speed
6.35mph

10.22 km/h

Practice cadence

SPMstep

+5% cadence

Same pace · shorter step · practice target

17937.5 in

+10% cadence

Same pace · shorter step · practice target

18735.9 in

+5% and +10% step-rate drills at this pace, in the style of clinical gait-retraining targets. Practice targets, not prescriptions.

Step length is one footstrike. Stride length is two steps. Speed is the same running as the pace converter. Belt speed lives on the treadmill pace calculator. Not medical or coaching advice.

Pace converter · Treadmill pace · Split calculator · 5K pace · Heart rate zones.

Worked examples

  • 9:27 /mi · 170 SPM

    6.35 mph · 1.00 m step · 39.4 in · 2.00 m stride

  • 5:52 /km · 170 SPM

    Same easy-run band · ~1.00 m step

  • 9:27 /mi · 180 SPM

    Same pace, shorter step than 170

Formulas

Arithmetic, not physiology. Speed is distance over time. Cadence is how often the feet land. Step length is metres per footstrike; stride length is two steps. This page does not clone VDOT, McMillan, or any proprietary table.

  • speed_m_s = 1609.344 / pace_sec_per_mile
  • speed_m_s = 1000 / pace_sec_per_km
  • step_length_m = speed_m_s / (cadence_spm / 60)
  • cadence_spm = speed_m_s × 60 / step_length_m
  • stride_length_m = 2 × step_length_m
  • mph = 60 / pace_min_per_mile
  • 1 mile = 1.609344 km

180 SPM is not a universal target. Jack Daniels counted many elite men near 180 at 5K race effort — an observation in Daniels' Running Formula, not a cadence everyone should hold on an easy run. Optional +5% / +10% rows follow the idea of step-rate drills (Heiderscheit et al., 2011, Med Sci Sports Exerc) as practice targets at the same pace, not prescriptions.

Same mile as the pace converter · treadmill pace · split calculator · 5K pace · heart-rate zones · grade-adjusted pace. Not medical or coaching advice.

FAQ

What is running cadence in SPM?

Cadence is steps per minute — how often your feet hit the ground. At 9:27 per mile and 170 SPM, speed is 6.35 mph and step length is about 1.00 m (39.4 in). There is no Calculate button; SPM updates live.

Step length vs stride length?

Step length is the distance per footstrike (one step). Stride length is two steps — the same foot to the same foot. This calculator labels both so they are not mixed up. Default 9:27/mi at 170 SPM is ~1.00 m step and ~2.00 m stride.

How do I get cadence from pace?

Speed in metres per second is 1609.344 divided by seconds per mile (or 1000 divided by seconds per kilometre). Cadence in SPM is speed × 60 ÷ step length in metres. Or pick a cadence and read step length at that pace.

Is 180 SPM the right running cadence?

No. 180 steps per minute is a myth as a universal target. Jack Daniels observed many elite men near 180 at 5K race effort — an observation, not a prescription for every runner or every pace. Easy runs are often slower. Use your own SPM at a known pace, then optional +5% / +10% practice targets if you are experimenting. Not coaching advice.

Should I shorten my stride?

This page does not diagnose overstride. Optional height shows step length as a fraction of stature; many easy-run step lengths sit near ~0.4–0.5 of height. That is ratio guidance only, not medical or coaching advice. The +5% / +10% row keeps the same pace and shortens the step — practice targets, not a treatment plan.