Ski DIN Calculator
Free ski binding release calculator based on ISO 11088:2023 (Edition 7). Calculate your recommended DIN setting in seconds.
BSL is usually 250–350 mm for adult ski boots (or 200–250 mm for juniors). Check the 3-digit number stamped on your boot heel.
Tělesné rozměry odpovídají Code K.
Aplikovaný posun o +1 Krok.
Věkový posun o 0 Kroky → Výsledný kód Code L.
Code L protnut s 291–310 mm dává 6.50 DIN.
- Skier Type II (Moderate) adjusts setting 1 row down (+1 code letter).
Oznámení o kalibraci ISO 11088
Vypočítává odhadované hodnoty DIN podle normy ISO 11088 pro informační účely. Vázání musí být seřízeno a testováno certifikovaným technikem.
ISO 11088 Reference Matrix
Crosshair maps current adjusted skier code and BSL bracket onto standard lookup table.
| Skier Code | ≤ 230 mm | 231–250 mm | 251–270 mm | 271–290 mm | 291–310 mm | 311–330 mm | 331–350 mm | ≥ 351 mm |
|---|---|---|---|---|---|---|---|---|
Code A | 0.75 | 0.75 | 0.75 | — | — | — | — | — |
Code B | 1.00 | 0.75 | 0.75 | 0.75 | — | — | — | — |
Code C | 1.50 | 1.25 | 1.25 | 1.00 | — | — | — | — |
Code D | 2.00 | 1.75 | 1.50 | 1.50 | 1.25 | — | — | — |
Code E | 2.50 | 2.25 | 2.00 | 1.75 | 1.50 | 1.50 | — | — |
Code F | 3.00 | 2.75 | 2.50 | 2.25 | 2.00 | 1.75 | 1.75 | — |
Code G | — | 3.50 | 3.00 | 2.75 | 2.50 | 2.25 | 2.00 | — |
Code H | — | — | 3.50 | 3.00 | 3.00 | 2.75 | 2.50 | — |
Code I | — | — | 4.50 | 4.00 | 3.50 | 3.50 | 3.00 | — |
Code J | — | — | 5.50 | 5.00 | 4.50 | 4.00 | 3.50 | 3.00 |
Code K | — | — | 6.50 | 6.00 | 5.50 | 5.00 | 4.50 | 4.00 |
Code L | — | — | 7.50 | 7.00 | 6.50 | 6.00 | 5.50 | 5.00 |
Code M | — | — | 8.50 | 8.00 | 7.00 | 6.50 | 6.00 | 5.50 |
Code N | — | — | 10.00 | 9.50 | 8.50 | 8.00 | 7.50 | — |
Code O | — | — | 11.50 | 11.00 | 10.00 | 9.50 | 9.00 | — |
Code P | — | — | — | — | 12.00 | 11.00 | 10.50 | — |
Official reference: ISO 11088:2023 Table 2 (Indicator settings by Skier Code and BSL)
What DIN Setting Do You Need?
A ski binding DIN setting controls the force required to release your boot safely during a fall. Calculated under ISO 11088:2023, your baseline code is determined by your weight and height, adjusted for skier type (-I to III+) and age group, and finally mapped against your boot sole length (BSL in mm).
Worked Calculation Example
ISO 11088:2023Note: All calculations provide a baseline setting. Final release calibration must be verified on diagnostic test equipment by a trained ski technician.
Baseline DIN by Weight (BSL 305 mm, Adult)
BSL 291–310 mm| Skier Weight | Type I (Beginner) | Type II (All-Mtn) | Type III (Aggressive) |
|---|---|---|---|
| 45 kg (99 lbs) | 3 | 3.5 | 4.5 |
| 55 kg (121 lbs) | 3.5 | 4.5 | 5.5 |
| 65 kg (143 lbs) | 4.5 | 5.5 | 6.5 |
| 75 kg (165 lbs) | 5.5 | 6.5 | 7 |
| 85 kg (187 lbs) | 6.5 | 7 | 8.5 |
| 95 kg (209 lbs) | 6.5 | 7 | 8.5 |
System Architecture & Standards
Based on ISO 11088:2023
Implements the full ISO 11088:2023 matrix including height-weight conflict resolution, age modifiers, and horizontal nearest-neighbor fallback logic.
Zero-Data Architecture
All calculations run in browser RAM. Your weight, height, age, and boot size are never sent to a server, stored in cookies, or logged anywhere.
Technician Export Card
Export a clean, printable summary card with your DIN settings to share with a trained ski technician for binding mounting and calibration.
How the ISO 11088 math works.
A transparent, step-by-step breakdown of how your DIN value is calculated.
Baseline Force
Body weight and height determine your initial Skier Code and safe threshold.
Ability Shift
Your Skier Type modifies the code: Type I uses the baseline row, Type II moves 1 row lower on the chart, Type III moves 2 rows lower.
Age Modifier
Skiers under 10 or age 50+ move 1 row higher on the chart (lower DIN) for bone and joint safety.
Matrix Lookup
Your final Skier Code intersects with your Boot Sole Length on the ISO 11088:2023 matrix.
Understanding Your Ski Binding DIN Setting
Everything you need to know about ski binding release settings, ISO 11088 compliance, and how to use a DIN calculator safely.
What Is a DIN Setting?
A DIN setting (named after Deutsches Institut für Normung, the German Institute for Standardization) is a calibrated numeric value that defines the release torque of your alpine ski binding. It determines how much twisting or bending force must be applied to your boot before the binding releases it from the ski.
The standard ISO 11088 lookup matrix defines release values ranging from 0.75 to 12.00. Recreational beginner skiers typically need settings between 2 and 5, while adult competition and freeride bindings scale beyond this table to 14, 16, or higher. Setting your DIN too low risks accidental pre-release during turns; setting it too high prevents release during a crash, increasing injury risk.
Why ISO 11088:2023 Matters
ISO 11088 is the international standard that governs how alpine ski bindings are assembled, inspected, and adjusted. It defines the mathematical relationship between a skier's physical characteristics — weight, height, age, and boot sole length — and the appropriate release setting.
DIN Calculator Pro implements ISO 11088:2023 (Edition 7, which supersedes the withdrawn 2018 edition). Every calculation is derived from standard weight-height lookup tables, modified by exact skier type row offsets and age adjustments defined in the standard.
The Four-Step ISO 11088 Calculation Method
- 1Determine your initial Skier Code. Body weight and height produce an initial Skier Code (A through M). Where height and weight suggest different codes, the ISO standard mandates selecting the row closer to the top of the chart (lower code) for conservative safety.
- 2Apply the Skier Type modifier. Type I uses the baseline row. Type II moves one row lower on the chart (+1 code, higher DIN). Type III moves two rows lower (+2 codes). Type III+ moves three rows lower (+3 codes, manufacturer convention). Type −I moves one row higher (-1 code, for skiers over 17 kg). Skiers weighing 13 kg or less receive no ability modifier.
- 3Apply the age modifier. Skiers under 10 years old or 50 and older move one row higher on the chart (-1 code reduction) to account for bone and joint vulnerability. Skiers weighing 13 kg or less receive no age modifier.
- 4Cross-reference with Boot Sole Length (BSL). Your final adjusted Skier Code selects the row in the ISO 11088 matrix; your Boot Sole Length (BSL in mm) selects the column. The intersecting cell is your baseline DIN estimate.
What Is Boot Sole Length (BSL)?
Boot Sole Length (BSL) is the total length of the ski boot's sole in millimeters, measured from heel lug to toe lug. It is permanently stamped or embossed on the heel lug or arch of every alpine ski boot shell. BSL is entirely different from Mondo sizing (your foot length in centimeters) — a size 27.5 Mondo boot from different manufacturers can have BSL values ranging from 298 mm to 320 mm.
BSL directly affects DIN because longer boots apply more leverage to the binding. A binding that correctly releases a 300 mm BSL boot may pre-release a 330 mm boot under the same force, or fail to release a 290 mm boot in a crash. Always use the exact stamped BSL value — never estimate from shoe size.
Choosing Your Skier Type
Selecting the correct Skier Type is critical — it is the most common error when people set their own DIN incorrectly. The ISO 11088 standard defines four categories:
- Type −I Extremely cautious beginner children who ski only gentle, groomed terrain at very slow speeds.
- Type I Cautious skiers who ski at moderate speeds on easier groomed runs. Prefer easy release above all else.
- Type II Average skiers who ski varied terrain at moderate-to-high speeds. The default for most adults.
- Type III Aggressive, experienced skiers skiing difficult terrain at high speeds. Retention is prioritized over release.
Most recreational adult skiers are Type I or Type II. Self-classifying as Type III when you are not leads to dangerous over-retention settings.
Is a DIN Calculator Safe to Use Without a Technician?
DIN Calculator Pro provides an informational baseline reference derived from the published tables in ISO 11088:2023. This is a reference starting point, not a substitute for hands-on workshop service. The physical act of adjusting your binding, verifying forward pressure, and inspecting release tension must always be performed by a certified ski technician using calibrated torque test equipment.
Binding release is affected by physical variables beyond lookup tables: boot wear at the toe and heel lugs, friction strip condition, forward pressure spring preload, binding mechanical tolerances, and pivot alignment. A mechanical torque inspection device measures actual release torque and allows adjustments that no digital calculator can provide.
The recommended workflow: Use DIN Calculator Pro to calculate your reference DIN indicator, print or save your reference card, and take your equipment to a certified ski shop. A certified ski technician will set the indicator, verify forward pressure, and test your binding release within standard tolerances using calibrated workshop equipment.