Size Guides and Resources

Sizing tools and guides

At SWI, we know how important it is to find the right school uniform. Our easy-to-use digital sizing tool can assist you with finding the perfect fit, the first time.

You can also find helpful sizing guides and tips on how to measure your child on a range of our products.

Sizing tables and additional help

We recommend checking your child's measurements before buying, using our top tips to ensure the best fit. To get the most accurate measurements, where possible measure over the undergarments most likely to be worn, rather than over outer clothing.

Please Note: All of the sizes of our garments are given in inches.

Height: This is best done barefoot, with feet together flat on the ground and back against a wall; measure from the top of the head to the ground.
Neck: Place the tape measure where the shirt collar would normally sit around the base of the neck. Leaving a little extra room is very important so that the collar is comfortable, so make sure not to pull too tightly.
Chest: Take the tape measure through the underarms, around the fullest part of the chest.
Waist: Measure the natural waistline, not pulling too tightly to ensure comfort.
Hips: Standing straight with the heels together, take the tape measure around the fullest part of the bottom.
Inside leg: This time shoes on; measure from the inside leg to where the trouser is normally worn on the shoe. If you're unsure, trousers should sit approximately 5cm from the ground.

AGE		3	4	5	6	7	8	9	10	11	12	13	14	15	16
HEIGHT	/INCHES	38	41	43	46	48	50	53	55	58	60	63	66	69	70
	/CM	97	104	110	116	122	128	134	140	146	152	160	168	174	176
COLLAR	/INCHES	11	11	11.5	12	12.5	12.5	13	13	13.5	14	14	14.5	15	15.5+
	/CM	28	28	29	30	32	32	32	32	34	35	35	37	38	39+
BLAZER	/INCHES	23	24	25-26	27	28	29	30	31	32	33	34	36	38	40+
	/CM	58	61	65	69	71	74	76	79	81	84	86	91	96	102+
KNITWEAR	/INCHES	24	26	28	28	30	30	32	34	34	36	36	38	40	42
	/CM	61	66	71	71	76	76	81	86	86	91	91	96	102	107
RUGBY JERSEY	/INCHES	24	24	26	28	30	30	32	32	34	36	38	40	42	42-44
	/CM	61	61	66	71	76	76	81	81	86	91	96	102	107	110
POLOSHIRT	/INCHES	20	22	24	26	28	28	30	30	32	34	34	36	38-40	42-44
	/CM	51	56	61	66	71	71	76	76	81	86	86	91	100	110
P.E. SHORTS	/INCHES	20	22	22	24	24	26	26	28	30	32	32	34	34	36
	/CM	51	56	56	61	61	66	66	71	76	81	81	86	86	91
	/GRADE					MB	MB	MB	LB	LB	XLB	XS	S	S	S-M
TRACKSUIT	/GRADE				SB	SB	MB	MB	MB	LB	LB	XS	S	S-M	M+
TROUSERS	Waist measurements can vary for each age group. Measure child to obtain actual size. Length for inside leg to be measured from crotch to floor without shoes on.

AGE		3	4	5	6	7	8	9	10	11	12	13	14	15	16
HEIGHT	/INCHES	38	41	43	46	48	50	53	55	58	60	63	66	69	70
	/CM	97	104	110	116	122	128	134	140	146	152	160	168	174	176
BLAZER	/INCHES	23	24	25-26	27	28	29	30	31	32	33	34	36	38	38+
	/CM	58	61	65	69	71	74	76	79	81	84	86	91	96	96+
KNITWEAR	/INCHES	24	26	28	28	30	30	32	34	34	36	36	38	40	40+
	/CM	61	66	71	71	76	76	81	86	86	91	91	96	102	102
BLOUSE	/INCHES	22	22	24	26	26	28	30	30	32	34	34	36	38	40+
	/CM	56	56	61	66	66	71	76	76	81	86	86	91	96	102
GAMES JERSEY	/INCHES	24	24	26	28	30	30	32	32	34	36	38	40	42	44
	/CM	61	61	66	71	76	76	81	81	86	91	96	102	107	110
POLOSHIRT	/INCHES	20	22	24	26	28	28	30	30	32	34	34	36	38-40	42-44
	/CM	51	56	61	66	71	71	76	76	81	86	86	91	100	110
P.E. SHORTS	/INCHES	20	22	22	24	24	26	26	28	30	32	32	34	34	36
	/CM	51	56	56	61	61	66	66	71	76	81	81	86	86	91
	/GRADE					MB	MB	MB	LB	LB	XLB	XS	S	S	S-M
TRACKSUIT	/GRADE				SB	SB	MB	MB	MB	LB	LB	XS	S	S-M	M+
SKIRTS	Waist measurements can vary for each age group. Measure child to obtain actual size. Length to be from waist to where the hem should finish.

How to use: The Fitting Room

On the product details page, select the button that says 'Find your size'.

Enter your child’s gender, height, weight and age into the sizing tool. The tool will then generate measurements for your child’s chest and waist.

You can now adjust these suggestions to ensure they’re accurate for your child.

Use the sliders to adjust the comfort levels depending on how snug or wide you’d like the garment to be. The suggested sizes will then change in accordance with any adjustments made.