How Many Steps in a Mile

Why there is no single number of steps in a mile

A mile is 5,280 feet, or 63,360 inches. Divide that by the length of one step and you have your answer. The step length is the only unknown, and it is not a constant: it depends on your height, your pace, the surface, and whether you are walking the dog or late for a train.

The number most people have heard is 2,000 steps per mile. That figure assumes a stride of 31.7 inches, which is what you get from 63,360 / 2,000. A 31.7 inch stride belongs to someone around 6 feet 4, walking at a decent clip. For an average adult it is too long, so the 2,000 rule undercounts steps by 10 to 25 percent depending on height.

This is why two people can walk the same route and get counts that differ by hundreds of steps. It is also why fitness trackers ask for your height, and why a step goal copied from a friend is not your goal.

One distinction to keep straight: stride and step length are used loosely to mean the same thing in most apps, but in gait research a step is heel to heel on opposite feet and a stride is a full cycle of two steps. Walking apps almost always mean the heel to heel distance between two consecutive footfalls of the same foot, which is the number this page uses.

The stride formula that works for most people

The standard estimate is a fraction of your height. Multiply your height in inches by 0.415 if you are a man, or by 0.413 if you are a woman, and you get a stride that lands within a couple of inches for most adults walking at a normal pace.

A 5 foot 7 man is 67 inches tall. 67 times 0.415 is 27.8 inches. Divide 63,360 by 27.8 and you get 2,279 steps per mile. A 5 foot 7 woman lands at 27.7 inches and 2,290 steps, which is close enough that the difference rarely matters for a daily goal.

The formula is a population average, not a measurement. People with long legs for their height, or a short stride from an injury, can sit 3 or 4 inches off it. The fix is to measure your own stride once, which takes about two minutes:

• Mark a start line on flat ground and walk 10 normal steps.
• Mark where the same foot lands on the tenth step.
• Measure the distance in inches and divide by 10.
• Repeat it at your fast pace, because the number will be different.

A measured stride beats any formula, and it is the one input that makes a step count worth trusting. The calculator takes it directly when you pick the measured option.

Steps per mile by height

These are the estimates for a normal walking pace, using the 0.415 and 0.413 factors. Heights are in feet and inches, strides in inches, and the last two columns are steps per mile.

The spread from 5 feet to 6 feet 4 is about 500 steps a mile, or 21%. Over a 3 mile walk that is a difference of 1,500 steps, which is why a step goal that fits one person can be a stretch for another. Notice also that the man and woman columns are within about 1% of each other at every height, so the sex difference is smaller than the height difference by a wide margin.

If you only remember one number, remember that steps per mile falls as height rises. A short walker covers less ground per step, so a mile costs more steps.

Pace changes the count

Stride length is not fixed even for one person. Walk faster and your steps get longer, up to a point, because the body naturally extends the swing leg to keep up. Walk slowly and they shorten. The same 5 foot 7 walker covers a mile in about 2,424 steps at a slow 2 mph stroll and about 1,931 steps at a 5 mph jog, a difference of roughly 20%.

Cadence rises faster than stride, which is why the steps a minute column climbs from 88 to 161 while steps a mile only falls from 2,424 to 1,931. At a jog you are both taking longer steps and taking them more often, so a mile goes by in about 12 minutes instead of 20.

This is the part most step counters handle badly. A wrist tracker detects arm swing, not footfalls, so it tends to undercount when your arms are still, such as pushing a stroller or holding a rail, and to overcount when your hands move without walking, such as clapping or chopping vegetables.

Why your tracker disagrees with a hand count

Wrist worn trackers infer steps from accelerometer patterns, and the inference fails in predictable places. Expect a gap of 5 to 15 percent between a tracker and a careful hand count, and expect the gap to be larger on a treadmill than outdoors.

• Pushing a cart or stroller. The arm stays still while the legs work, so the count drops, sometimes by 30% or more.
• Treadmill walking. No forward motion and no wind, and the wrist barely swings if you hold the rails. Many trackers undercount by 10 to 20%.
• Phone in a pocket. Pocket placement catches leg motion well but adds false steps from bouncing on a bike or in a car.
• Hands busy. Cooking, folding laundry and typing can all register as steps on a wrist device.
• Very slow walking. Below about 2 mph many algorithms stop counting, which is why a slow walk around the block shows fewer steps than expected.

If the number matters, calibrate once. Walk a measured mile with the tracker and a hand count at the same time, then compare. If the tracker reads 2,050 against a hand count of 2,279, it is running 10% low, and you can either correct your goal or switch the device to a distance based mode.

The reverse error is worth knowing too. A tracker that overcounts makes a 10,000 step day look easier than it was, and over a month that adds up to a lot of phantom walking.

Step goals converted to miles

Step goals are only useful if you know what they mean in distance. The table below uses the 27.8 inch stride from the 5 foot 7 example and a 3 mph walking pace, so it applies to an average adult on flat ground.

The 10,000 step target is not a clinical guideline. It traces back to a 1965 Japanese pedometer sold as the manpo-kei, which translates as ten thousand step meter, and the round number stuck. The federal physical activity guidelines set the adult target at 150 minutes of moderate activity a week, which at 3 mph is 7.5 miles, or roughly 17,100 steps spread over seven days. That works out to about 2,450 steps a day from dedicated walking, before any steps from daily life.

Put another way, 10,000 steps a day is about 4.4 miles, or 70 minutes of walking at a normal pace, which is more than the guideline asks and a reasonable target for someone who wants the extra margin. The NHLBI walking page makes the same point from the weight side: distance and time are the numbers that matter, and steps are a convenient proxy for both.

Getting a stride you can trust

If you want a step count that holds up, spend two minutes on a measured stride and skip the formulas. A parking lot with painted lines works well, since the spaces are usually 9 feet wide and the lines are straight.

Walk 20 normal steps, measure the total distance in inches, and divide by 20. Then do it again at your fast pace, because the number will be 1 to 2 inches longer. Write both down. A stride measured over 20 steps is more reliable than one measured over 5, because a single awkward step moves the average less.

For treadmill work, set the belt to a fixed speed and count 100 steps against the timer. If 100 steps take 52 seconds, your cadence is about 115 steps a minute, and the distance the machine reports tells you the stride directly. That check catches a treadmill that is calibrated wrong, which is common on home equipment.

And if the goal is health rather than a number, distance and minutes are the sturdier measures. A 30 minute walk covers about 1.5 miles at a normal pace, which is around 3,400 steps, and it hits the same guideline whether your stride is 24 inches or 32. Steps are a handy way to keep score, not a physical quantity with one true value.

Stride estimates come from published height based formulas and are averages, not measurements of you. A tracker reading and a hand count will differ, and neither is exact. Use the figure as a planning estimate.