Ski Binding DIN Calculator
Every alpine ski binding has a release value, commonly called the DIN setting, which determines how much force it takes for the binding to let go of your boot in a fall. This free calculator uses the official ISO 11088 method: your weight, height, age, skier type and boot sole length combine into a skier code and a recommended release value.
- Full official ISO 11088 chart
- Instant result, no sign-up
- Metric & imperial units
Your details
The result updates as you type
Stamped on the side or heel of your boot shell, e.g. 305. Not your shoe size.
Fill in your weight, height, age, boot sole length and skier type to see your DIN setting.
- Your skier code
- –
- Chart row after adjustments
- –
- Sole length column
- –
Indicative only. Bindings must always be set and torque-tested by a certified technician.
Safety first: this result is indicative, not a setting instruction
This calculator follows the ISO 11088 method, but a number on a screen never replaces a professional binding fit. Ski bindings must always be adjusted, function-checked and torque-tested by a certified technician using calibrated equipment, taking into account your boots, binding model and physical condition. An incorrectly set binding can fail to release or release unexpectedly, and both can cause serious injury, including ligament tears and fractures. Use this result to understand and sanity-check your setup, then have it set in a shop.
What is a DIN setting?
The DIN setting, formally the release value or Z-value, is the standardized measure of how much torque a ski binding withstands before it releases the boot. It is named after the Deutsches Institut für Normung, the German standards body that first codified the scale, and it is now governed internationally by ISO 11088. The scale typically runs from 0.5 on children's bindings to 14 or more on race bindings, and the same number means the same release force on every certified binding.
The goal of the setting is a compromise: high enough that the binding holds through normal skiing forces such as carving, bumps and landings, yet low enough that it releases before a fall can transfer injurious torque to your leg. That balance depends on how much force you generate (weight, height, skiing style) and on how much leverage your boot has on the binding (sole length), which is exactly what the ISO 11088 method captures.
How the ISO 11088 method works
Four steps take you from body measurements to a release value. This calculator performs all of them instantly, and you can follow along on the reference chart below.
Find your skier code
Your weight and your height each map to a code from A to M. The standard uses whichever code sits closer to A, so a heavy but short skier is coded by height, and a tall but light skier by weight.
Adjust for skier type
Type 1 skiers stay on their base row. Type 2 moves one row down the chart and Type 3 moves two rows down, increasing the release value. Rows N and O exist only for these adjustments.
Adjust for age
Skiers under 10 or aged 50 and over move one row back up the chart. Bones and ligaments tolerate less force at those ages, so the binding is set to release slightly earlier.
Read across to sole length
A longer boot sole gives falls more leverage on the binding, so the value drops as sole length grows. The cell where your final row meets your sole length column is your DIN setting.
The official DIN setting chart (ISO 11088)
The complete release value table used by ski technicians worldwide. When you use the calculator above, your cell is highlighted here.
| Code | Weight kg / lb |
Height cm / ft |
Release value by boot sole length (mm) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ≤ 230 | 231–250 | 251–270 | 271–290 | 291–310 | 311–330 | 331–350 | ≥ 351 | |||
| A | 10–13 kg / 22–29 lb | – | 0.75 | 0.75 | 0.75 | – | – | – | – | – |
| B | 14–17 kg / 30–38 lb | – | 1 | 0.75 | 0.75 | 0.75 | – | – | – | – |
| C | 18–21 kg / 39–47 lb | – | 1.5 | 1.25 | 1.25 | 1 | – | – | – | – |
| D | 22–25 kg / 48–56 lb | – | 2 | 1.75 | 1.5 | 1.5 | 1.25 | – | – | – |
| E | 26–30 kg / 57–66 lb | – | 2.5 | 2.25 | 2 | 1.75 | 1.5 | 1.5 | – | – |
| F | 31–35 kg / 67–78 lb | – | 3 | 2.75 | 2.5 | 2.25 | 2 | 1.75 | 1.75 | – |
| G | 36–41 kg / 79–91 lb | – | – | 3.5 | 3 | 2.75 | 2.5 | 2.25 | 2 | – |
| H | 42–48 kg / 92–107 lb | ≤ 148 cm / ≤ 4′10″ | – | – | 3.5 | 3 | 3 | 2.75 | 2.5 | – |
| I | 49–57 kg / 108–125 lb | 149–157 cm / 4′11″–5′1″ | – | – | 4.5 | 4 | 3.5 | 3.5 | 3 | – |
| J | 58–66 kg / 126–147 lb | 158–166 cm / 5′2″–5′5″ | – | – | 5.5 | 5 | 4.5 | 4 | 3.5 | 3 |
| K | 67–78 kg / 148–174 lb | 167–178 cm / 5′6″–5′10″ | – | – | 6.5 | 6 | 5.5 | 5 | 4.5 | 4 |
| L | 79–94 kg / 175–209 lb | 179–194 cm / 5′11″–6′4″ | – | – | 7.5 | 7 | 6.5 | 6 | 5.5 | 5 |
| M | ≥ 95 kg / ≥ 210 lb | ≥ 195 cm / ≥ 6′5″ | – | – | – | 8.5 | 8 | 7 | 6.5 | 6 |
| N | – | – | – | – | – | – | 10 | 9.5 | 8.5 | 8 |
| O | – | – | – | – | – | – | 11.5 | 11 | 10 | 9.5 |
Rows N and O have no weight or height ranges: they are reached only through skier type adjustments.
Where a cell is blank, technicians use the nearest value in the same row.
Which skier type are you?
Skier type is a self-classification defined by the standard. It describes how you ski and how much release margin you want, not how good you think you are. When in doubt, choose the lower type.
Type 1 · Cautious
Skis conservatively at slower speeds, favours smooth green and blue runs, and prefers the binding to release early rather than late. Type 1 gives lower-than-average release values.
- All first-timers and beginners
- Anyone unsure of their type
- Maximum release margin
Type 2 · Average
Skis at moderate speeds on varied terrain, from blues to the occasional red or black run. This is the correct choice for the majority of recreational skiers.
- Confident intermediates
- Mixed piste terrain and speeds
- Balanced retention and release
Type 3 · Aggressive
Skis fast and dynamically on steep, challenging terrain, carving hard and absorbing big forces. Type 3 accepts a higher-than-average setting: fewer pre-releases, but higher forces before the binding lets go.
- Advanced and expert skiers
- High speeds, steeps and jumps
- Retention prioritised over release
DIN setting FAQ
Expert answers to the questions skiers ask most about binding release values.
DIN stands for Deutsches Institut für Normung, the German Institute for Standardization that originally defined the release-force scale for ski bindings. The DIN number, also called the release value or Z-value, tells the binding how much torque is required before it releases your boot. The scale is standardized worldwide through ISO 11088, so a DIN of 6 corresponds to the same release force on any certified alpine binding, regardless of brand. Higher numbers mean the binding holds on harder; lower numbers mean it releases more easily.
A DIN set too high means the binding may not release in a fall, so the twisting forces go into your leg instead. This dramatically raises the risk of knee ligament injuries, especially ACL and MCL tears, and of spiral fractures of the tibia. Never turn your DIN up just to stop occasional pre-releases: have a technician investigate the cause first, because worn boot soles, incorrect forward pressure or a faulty binding are far more common culprits than a genuinely low setting.
Too low and the binding releases when it should not: during hard carving, on landings, or at speed. An unexpected pre-release can throw you into a violent, uncontrolled fall that is often more dangerous than the fall the binding was trying to prevent. If you pre-release repeatedly at a correctly calculated setting, ask a shop to check the binding function, forward pressure and boot sole wear on a torque tester before anyone raises the number.
At least once per season, ideally before your first ski day, and additionally whenever you change boots, gain or lose significant weight, cross the age-50 threshold, or have a hard crash. A shop verifies on a calibrated torque tester that the binding actually releases at the indicated value. Springs weaken and mechanisms wear over time, so the number printed in the window is no guarantee of the real release torque.
Most adult beginners end up between roughly DIN 2 and 6 depending on weight, height, age and boot sole length. For example, a 70 kg beginner of average height with a 305 mm boot sole calculates to about 5. Children are much lower, often between 0.75 and 3. Beginners should always select Type 1 (cautious) in the calculator, which is also the correct choice for anyone unsure of their skier type.
No. Standard snowboard bindings are strap-in or step-on systems that are not designed to release, so there is no release value to calculate. Both feet stay attached to one board, which changes fall mechanics completely compared to skiing. DIN release values apply to alpine ski bindings under ISO 11088, and in adapted form to ski touring bindings certified under ISO 13992. The rare exception on a snowboard is a hardboot splitboard setup that borrows ski-style hardware.
Yes. ISO 11088 specifies a single indicator value that applies to both the toe and the heel piece. The toe piece mainly protects you in twisting falls and the heel piece in forward-leaning falls, but both are adjusted to the same number. If you ever see different toe and heel values on a setup, a technician has deliberately deviated from the standard method, and you should ask why before skiing on it.
The binding releases at a set torque, and your boot sole acts as a lever arm on it. A longer sole gives the same twisting force more leverage, so the spring value must be reduced to keep the actual release torque on your leg identical. That is why the ISO chart lowers the release value as sole length grows: two skiers with identical weight, height and skier type but different boot lengths correctly get different DIN numbers.
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