Paper Crafts Calculators
Calculators for card making, origami, bookbinding, paper trimming and paper cost estimation.
Card Size Calculator
Calculate card blank dimensions from sheet sizes with fold allowances.
Envelope Size Calculator
Find the right envelope size for your card or document dimensions.
Paper Weight Converter
Convert between GSM, lb bond, lb cover and other paper weight systems.
Origami Paper Calculator
Calculate paper size needed for origami models based on finished size.
Bookbinding Calculator
Work out spine width, cover dimensions and page signatures for bookbinding.
Paper Grain Calculator
Determine paper grain direction and its effect on folding and printing.
Score Line Calculator
Calculate score line positions for cards, boxes and folded paper projects.
Paper Trimming Calculator
Work out how many pieces you can cut from a sheet with minimal waste.
Cardstock Calculator
Calculate how many sheets of cardstock you need for your project.
Paper Cost Calculator
Estimate paper costs per sheet, per card or per project from pack prices.
10 free calculators in Paper Crafts
Paper Crafting in the UK: Card Making, Bookbinding and Beyond
Paper crafts remain one of the most popular creative hobbies in the UK, from handmade greetings cards sold at local craft fairs to hand-bound journals and origami decorations. Understanding paper sizes and weights is fundamental — UK crafters work with the A-series system (A4, A5, A6 and so on), and our card size calculator helps you work out card blank dimensions from standard sheet sizes with proper fold allowances. The envelope size calculator then matches your finished card to the correct C-series envelope, whether that is a C5 for an A5 card or a C6 for an A6.
Paper weight in the UK is measured in GSM (grams per square metre), but if you order from US suppliers you will encounter the pound-based system. Our paper weight converter handles conversions between GSM, lb bond, lb cover and lb index so you always know what you are getting. For bookbinding projects, the bookbinding calculator works out spine width based on page count and paper thickness, plus cover board dimensions with the correct overhang — typically 3 mm on three sides for a standard hardback.
Getting the most from your card and paper stock means minimising waste when cutting. The paper trimming calculator shows you how many pieces you can cut from a sheet and what the offcut dimensions will be, while the cardstock calculator tells you how many A4 or SRA4 sheets to buy for your project batch. If you are making cards to sell, our paper cost calculator breaks down costs per card from pack prices, helping you price your work accurately. For scoring and folding, the score line calculator positions your fold lines precisely — essential for clean, professional-looking cards and boxes.