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Harness Sizing Calculator


  • It is very difficult to measure yourself accurately, so you will need someone to assist.
  • Try not to skip any measurements.
  • The boxes with red numbers are calculation fields that will show your results.

Container Size

A) Container Size

• Be sure to choose your actual container size because this affects the stabilizer calculation.

Sex & Weight

B) Sex

• Ladies, we need your cup size for yoke & chest strap location.

C) Weight

• If your weight fluctuates from winter to summer, give us the weight you want the rig sizing to be based on.  If you can’t decide then use your average weight.

D) Body To Legs Ratio (inseam)

• Look in the mirror and don’t be surprised if your legs are slightly long or short; most people are not exactly Joe Average.

Main Lift Web

E) Main Lift Web From Height

• Enter your height

F) Main Lift Web From Torso

• Measure both left and right as a double check.

• Measure from the BOTTOM of the dip in your collarbone at the base of your throat, diagonally over your chest, to the very TOP of your hip bone AT YOUR SIDE.

• The top of the hip bone is approximately the same height off the ground as your belly button.

• Common mistakes are measuring too low on the hip (too long), or not enough to the outside (too short).

• A typical measurement would be between 15” (38 cm) and 20” (51cm), with the average being 16-18” (40-45 cm).

G) Main Lift Web From Long Girth

• Measure from the base of the throat (same starting point as the Torso measurement), down through the crotch and up your back to the base of the collar (protruding spine bone at the back of the neck).

H) Enter The Most Frequent Answer From E, F & G Above

• Use the most frequent result, not the average

I) Harness Type

• Select your harness type

J) I  Like My Fit

• After you determine your main lift web measurement, you can adjust it slightly for your fit preference.

Leg Pads

K) Leg Pad Measurement

• Measure both left and right as a double check.


• Measure around the leg, as the leg strap travels.

• Be sure to pull the tape SNUG.

• The measurement should be in the range of 28” – 34” for most people.

• Leg pad length preference varies from person to person. Some people like their pads to overlap, some like the ends to just touch, and others like a few inches of gap.  All of these are safe as long as you are sitting on the pad and your strap feeds through with at least 5-6 inches of tail.

Tip:  Make sure your leg straps are high and tight when exiting the aircraft.  Movement of leg straps during deployment can cause bruising – remember your student gear?

Stabilizer (waist)

L) Stabilizer (waist)

• This part of the harness cannot be adjusted, so you should look at this measurement first when looking at stock rigs.

• Measure around your waist at the top of your belt.

• Do not pull your stomach in.  Be certain the tape is level and snug.

• You can go up or down .5 inch based on your preference, but not more.

TIP:  The Mirage lumbar support elastic is only for comfort.  If you would like your rig to fit tighter against your back we recommend using our small sit fly belly band.  It attaches to your hip rings and can fit in your back pocket when not being used.  We also offer the large swoop belly band.

Yoke Extension

M) Yoke (chest)

• Measure at the nipples

• Make sure the tape is level across your back

N) Common Yoke Adjustments

• Select only if applicable / desired.


O) Shoulders

• Let us know if you have thick shoulders.   This is used to assist in determining yoke extensions.

• If you have thick shoulders we should double check your sizing.

Reference Tools

Reference Tool : Stabilizer Chart

Photo Instructions

We’re happy to help make your rig fit !

If you need assistance with your sizing attach:

1)  A photo of you standing facing the camera (head to toe in frame)

2)  A photo of you standing sideways to the camera (head to toe in frame)

TIP:   We need to see how long your body is compared to your legs and how thick you are, so please don’t wear jackets or baggy pants.   A t-shirt with shorts or jeans is best.