Standard Envelope Sizes in India: Full Chart (mm, cm, in)
In India, the most common business envelope sizes are C4 (229 × 324 mm) , C5 (162 × 229 mm) , C6 (114 × 162 mm) and DL (110 × 220 mm) . These follow the ISO 216 international standard, where each C-size envelope is built to hold the matching A-size sheet of paper. This guide gives you the complete envelope size chart in millimetres, centimetres and inches, explains which envelope fits which paper, and helps you pick the right size for letters, invoices, certificates and bulk business mailing. Standard Envelope Size Chart (mm, cm and Inches) Envelope sizes in India follow the ISO 216 C-series, the same standard used across Europe and most of Asia. Here is the complete chart: ISO 216 Envelope Sizes Envelope Millimetres Centimetres Inches Holds ...