Royal Mail PiP Format Analyzer

Check if your parcel fits as a Large Letter or Small Parcel under Royal Mail's Pricing in Proportion rules to save on UK postage.

What does the Royal Mail PiP Format Analyzer do?

Check if your parcel fits as a Large Letter or Small Parcel under Royal Mail's Pricing in Proportion rules to save on UK postage.

How to use the Royal Mail PiP Format Analyzer

1. Upload: Select or drag-and-drop your raw shipping label PDFs into the upload zone.
2. Configure: Choose your preferred output layout, such as 4x6 thermal or 4-up A4 grid.
3. Generate & Download: Click process to instantly generate and download your optimized, print-ready labels.

Frequently Asked Questions

• What is PiP?

  Pricing in Proportion (PiP) is Royal Mail's system of pricing mail based on both size (dimensions) and weight.

• What happens if a Large Letter is too thick?

  If a Large Letter exceeds 2.5cm in thickness, it must be sent as a Small Parcel, which costs significantly more.

• What is the max weight for a Small Parcel?

  A Royal Mail Small Parcel can weigh up to 2kg and measure up to 45 x 35 x 16cm.

• How strict is Royal Mail on the 2.5cm depth?

  Extremely strict. A Large Letter must pass smoothly through a 2.5cm slot at the sorting office. If it gets stuck, you will be surcharged.

• Does Royal Mail use volumetric weight?

  No, Royal Mail domestic services use strict maximum dimensions and scale weight tiers (PiP), not volumetric calculation.

• Are international formats the same?

  No, Royal Mail international services have different size requirements, such as the max length + width + depth = 90cm rule.