Origami paper size calculator
Find the starting sheet size for a larger or smaller version of an origami model you have already measured.
Linear scale from 0.01 to 100. Assumes the same folding design; thickness and practical folding limits may affect the result. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Origami paper size calculator
- Enter the measured inputs and select their units.
- Review the calculated dimensions, counts and rounding.
- Download the result and verify it against a sample before making the full project.
Useful next steps
Choose one matching feature
Start with the sheet width and height used for your reference model. Measure a recognizable feature on the finished model, then enter the size you want that same feature to become. Different features or folding designs cannot be compared this way.
Scale the whole sheet
A model feature that measures 6 cm and needs to become 9 cm calls for a 1.5 times linear scale. A 15 × 15 cm sheet becomes 22.5 × 22.5 cm. Its area increases by 2.25 times, not 1.5 times.
Save the calculation
Download a CSV of the results or instructions, a readable text report and a JSON report with values, formulas and assumptions. Calculations run locally on your device. Unit changes keep the numbers already entered, so check the selected units before using the result.