Children's Trouser Basic Pattern Calculator

Learning how to make your own pattern has never been easier! If you want to become a true pattern maker without spending a lot of money on beginners sewing courses then you are in the right place. Buying or downloading a free baby pattern never offers you the perfect pattern for your body. Doesn't matter if you are a beginner or not, my 'Childrens' Trouser Block', complete with step-by-step instructions and a detailed drawing will help ensure your quick success.
The children's trousers pattern calculator can be used for 3 age groups 3-6 years old (92-116cm tall), 7-10 years old (122-140cm tall) and 11-14 years old (146-170cm tall).
The two piece children's trouser block gives a better shape and extra back crotch rise. The columns left of the blue line from the "INSTRUCTIONS" sheet will give you the basic shape. The ones on the right will give you a easy fitting shape.

Instructions for using the pattern calculator:
* Add your measurements in the yellow cells from the "MEASUREMENTS" tab. The basic measurements needed for the pattern should be made by using the sketch from the same sheet and the measurement code (ex. A, B, C, etc.)
* Press button "Calculate"
* In the "RESULTS/INSTRUCTIONS" tab, the dimensions for the blocks will be computed automatically.
By following the steps from "RESULTS/INSTRUCTIONS" and the drawing you will be easily able to make your own pattern. Good luck!

Measurements	Code	Value [cm]
		FILL IN
Height:	A	92-116 122-140 146-170
Hip circumference:	D
Body rise:	P
Inside leg:	Q
Garment measurements
Hem width:

Line	Value [cm]	Instructions
		Front
W5		Square down and right from W5.
W5-D5	23.0	Square right from point D5.
D5-1	21.8	Square up from point 1 and mark point 2.
1-D1	4.9
a	2.0	Length of bisector from point 1.
1-H1	5.8
2-W1	1.0
D5-D6	10.9	Square down.
D6-F6	60.0	Square across.
D6-K6	30.0	Square across.
F6-F1	8.8
F6-F5	8.8	Join D5–F5 and mark point K5 on the knee line.
K6-K1	9.8
		Draw the front inside seam by connecting points F1-K1 with a straight line and K1–D1 curving the line inwards 0.6cm.
		Back
D1-3	4.4	Square down from point 3.
3-D	0.8
b	4.5	Length of bisector from point 1.
1-H	11.5
W1-4	3.0	Square up.
4-W	2.5
W5-W3	2.0	Connect points W and W3.
D5-D1	1.0	Connect points W3 and D3.
F1-F	1.0
F5-F3	1.0	Connect ponts D3–F3 and mark point K3 on knee line.
K1-K	K3-K5	To be measured on the drawing.
		Draw the back inside seam by joining points F–K with a straight line and K–D curving the line inwards 1cm.