Elevation Gain Calculator
A loop has zero net change and all the climbing.
Work out Elevation Gain. A loop has zero net change and all the climbing. Names the misconception directly.
In metres, separated by commas — evenly spaced along the route
Total ascent
500 m
500 m descent · net change +0 m
Ascent and descent are summed separately because a loop returns to its start with zero net change and can still involve thousands of metres of climbing — and it is the climbing that determines the effort. This route has 500 m of ascent against a net change of 0 m, which is exactly why net elevation is a useless figure for planning. Note also that a coarser set of points understates ascent, because small undulations between them disappear.
How the Elevation Gain Calculator works
Total ascent and descent from a series of elevation readings, with the average and steepest grades and a flat-distance equivalent. Ascent and descent are summed separately, because net change tells you nothing about the effort.
Also known as: total ascent from a route · cumulative elevation gain calculator · net versus total climbing · how much climbing is in this route
Net change tells you nothing
A circular route returns to its start with a net elevation change of zero and can involve thousands of metres of climbing. It is the climbing that determines the effort, and net change hides all of it.
Which is why ascent and descent are summed separately here. Total ascent is the number that predicts how hard a route is; net change predicts only whether you end higher than you began.
Point-to-point routes are the case where net change misleads most. A route finishing 500 m higher might involve 2,000 m of ascent, and quoting the 500 is a substantial understatement of the day.
Why devices disagree
Elevation gain depends entirely on the smoothing threshold. Counting every fluctuation inflates the total with GPS noise; smoothing too aggressively loses genuine short climbs.
Barometric altimeters are generally more consistent than GPS-derived elevation, though they drift with weather. Mapped elevation models are stable and limited by the resolution of the underlying data.
The consequence is that two devices on the same walk can differ by 10 or 20%, and neither is definitively right. Comparing gain figures between different sources is close to meaningless; comparing them from one consistent source over time is not.
Turning climbing into distance
A common convention adds about a kilometre of flat-equivalent effort per 100 m of ascent. It makes a short steep route and a long flat one comparable in a way raw distance cannot.
The factor is a convention rather than a measurement, and it varies with gradient — very steep ground costs more per metre climbed than a gentle gradient does. It is a planning tool rather than a physiological model.
Descent costs far less energy and considerably more impact, which is why it barely appears in effort-equivalence and dominates next-day soreness. Eccentric muscle loading on descent is what actually causes it.
Where to go next
The Elevation Gain question rarely arrives on its own. These are the ones that usually come with it:
- Hiking Time Calculator — Naismith is a minimum, not an estimate.
- Backpack Weight Calculator — Base weight is the only part you carry every day.
- Bike Gear Ratio Calculator — Gear inches is a penny-farthing survival.
- BMI Calculator — Body mass index with category and healthy weight range.
Not medical advice. This calculator gives a general estimate, not medical advice. It cannot account for your individual health, medical history, or medication. Talk to a qualified healthcare professional before acting on any result.
Frequently asked questions
What is the difference between total and net elevation gain?
Total ascent sums every climb; net change is simply the end height less the start. A loop returns to its start with zero net change and can involve thousands of metres of climbing.
Why do GPS devices disagree on elevation gain?
Because they use different smoothing thresholds. Recording every tiny fluctuation inflates the total; smoothing too aggressively loses real climbs. Barometric altimeters are generally more consistent than GPS-only ones.
What is a flat-distance equivalent?
Converting climbing into the extra flat distance it feels like, so routes can be compared. A common rule adds 1 km of flat effort per 100 m of ascent.
How steep is too steep?
For walking, sustained gradients above about 25% become slow and awkward; above 35% most people use their hands. For cycling, 10% is hard and 20% is severe for a sustained climb.
How does elevation affect calorie burn?
Climbing is work against gravity — mass times height times g — and it dominates the energy cost on a steep route. Descending costs far less energy and considerably more knee.
How do I estimate ascent from a map?
Count contour crossings on the way up and multiply by the contour interval. It undercounts small undulations between contours, which is the same limitation as coarse GPS sampling.
Why does my watch report different gain from the route planner?
Different smoothing thresholds and different elevation data sources. A barometric altimeter and a mapped elevation model will rarely agree exactly, and neither is definitively right.
What is elevation smoothing?
Ignoring changes below a threshold to avoid counting noise as climbing. Too small a threshold inflates the total; too large a one loses genuine short climbs.
How much does descent cost in effort?
Far less in energy and considerably more in impact. Steep descent is the main cause of delayed muscle soreness after a hill day, and it slows fatigued walkers as much as ascent does.
What is a category climb in cycling?
A classification by length and gradient, running from category four up to hors catégorie. Roughly, it reflects the product of the climb's length and its average gradient.
How do I compare two routes?
By flat-distance equivalent, adding roughly a kilometre of effort per 100 m of ascent. It makes a short steep route and a long flat one comparable in a way raw distance cannot.
Does elevation gain affect calorie burn much?
Considerably. Climbing is work against gravity — mass times height times g — and on a steep route it dominates the energy cost of covering the distance.
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