Newborn 0-3 Month 3-6 Month 6-9 Month 6-12 Month 9-12 Month 12-18 Month 18-24 Month 24-36 Month 2-3 Year 2.5 Year 3 Year 4-5 Year 4-6 Year 5-6 Year 6-7 Year 7-8 Year 8-9 Year 9-10 Year 10-11 Year 11-12 Year 11-13 Year 12-13 Year 14-15 Year 0-3 Month (12 inch) 12-18 Month (18 inch) 18-24 Month (20 inch) 2.5 Year (22 inch) 3 Year (24 inch) 3-6 Month (14 inch) 4-6 Year (26 inch) 6-12 Month (16 inch) 7-8 Year (28 inch) 8-9 Year (30 inch) 9-10 Year (32 inch) L (9-12 Year) M ( 5-9 Year) S (3-5 Year)