Model Difficulty Score Calculator

Complexity rating from step count, folds, and references.

Number of steps

Unique fold types used

Max layers at thickest point

Uses sinks? (0=no, 1=yes)

Tab to move between fields

Difficulty score (1-10)

3.5

Skill level (1-5)

Step complexity (0-3)1

Fold diversity (0-2.5)1.5

Layer complexity (0-2.5)1

Sink technique bonus (0-2)0

Est. folding time (min)60

Est. folding time (hours)1

Practice attempts needed3

How to Use This Calculator

Count the total folding steps in the diagram or instructions and enter that number.
Count the distinct fold techniques used (mountain, valley, reverse, squash, petal, sink, etc.) and enter the count.
Estimate the maximum number of overlapping paper layers at the thickest part of the model.
Enter 1 if the model requires open or closed sink folds; enter 0 if it does not.
Read the difficulty score (1–10) and skill level (1–5) to assess whether the model suits your current abilities.
Use the estimated folding time and practice attempts outputs to plan your session and prepare extra paper.

How the result changes with Number of steps

Number of steps: Total folding steps in the diagram/instructions. Simple crane ≈ 20, complex insect ≈ 200+.
Unique fold types used: Count of distinct fold techniques (mountain, valley, reverse, squash, petal, sink, etc.).
Max layers at thickest point: Number of overlapping paper layers at the thickest part. Crane ≈ 4, complex ≈ 20-60+.
Uses sinks? (0=no, 1=yes): Whether the model requires open or closed sink folds (an advanced technique).

Difficulty score (1-10): Overall difficulty rating. 1-2=Beginner, 3-4=Low intermediate, 5-6=High intermediate, 7-8=Advanced, 9-10=Super-complex.
Skill level (1-5): 1=Beginner, 2=Low intermediate, 3=High intermediate, 4=Advanced, 5=Super-complex.
Step complexity (0-3): Points from step count.
Fold diversity (0-2.5): Points from variety of fold types.
Layer complexity (0-2.5): Points from maximum layer count.
Sink technique bonus (0-2): Bonus points for using sink folds.
Est. folding time (min): Approximate time to fold the model for an experienced folder.
Est. folding time (hours): Folding time in hours.
Practice attempts needed: Estimated number of attempts before a clean fold.

Identify Input Parameters
4 parameters
Number of steps = 30, Unique fold types used = 5, Max layers at thickest point = 8, Uses sinks? (0=no, 1=yes) = 0 = 4 input(s) provided
Calculate Difficulty score
Difficulty score
3.5 = 3.5
Calculate Skill level
2 = 2
Calculate Step complexity
Step complexity
1 = 1
Calculate Fold diversity
Fold diversity
1.5 = 1.5