Planning tool · Wingloading + APF chart lookup
Wingloading
Where do you actually sit? Punch in exit weight, canopy size, and jumps. You get your wingloading, the APF chart's recommended minimum canopy size for your experience, and a colour-coded reality-check. The verdict is a reality-check, not a clearance — your CI and a canopy coach who watches you land are the ones who actually say go.
Total exit weight matters — body + suit + rig + helmet + AAD + anything else you exit with. Underestimating here makes every number below lie.
Your wingloading
1.18lb/sqft
Intermediate · general reference, not a rule
200 lb (90.7 kg) / 170 sqft = 1.18 lb/sqft.
Reference bands: < 1.0 student/low · 1.0–1.4 intermediate · 1.4–1.9 advanced · 1.9+ expert/HP. These are general reference, not rules — your CI/canopy coach decides where you actually sit.
APF chart · Recommended minimum
190sqft
at 200 jumps · 95 kg chart column (209 lb)
Bracket: 200+ jumps. Exit weight snapped UP to the 95 kg column (conservative — the chart bands weight and we round to the heavier column, never down).
Based on the APF Canopy Downsizing Chart (2017). Conservative guideline based on TOTAL exit weight (jumper + all equipment).
The chart itself notes: jumpers are welcome to use a larger canopy than specified; the chart is for the average jumper doing < 200 jumps/year; size MUST be increased for variables (per the APF Canopy Pilot Guide).
Always consult your CI and a canopy coach who watches you land.
Reality check · More aggressive than the APF guideline
More aggressive than the APF guideline for your jump numbers.
Get a canopy coach's eyes on you before this. The chart is conservative, but you're below it — that's the band where a coached eval matters most. Not a permission slip; not a panic either. Bring it to your CI and your coach.
Your canopy
170 sqft
APF min
190 sqft
Your wingloading
1.18lb/sqft
You're ~11% below the chart minimum for your jumps × weight.
This is a guideline, not clearance. Wingloading × jumps is one slice. Always consult your Chief Instructor and a canopy coach who watches you land before any downsize. This tool is a reality-check — not a go/no-go authority and not a replacement for your CI or coach.
Know your canopy's real numbers
See what this canopy actually does in the wind
This calculator tells you where you sit vs the guideline. The spotting tool tells you how far that canopy actually reaches over the ground in today's winds — your real, wind-adjusted reach in miles and km.
Open the spotting tool →Free download · No email required
The Jump Slut downsizing checklist
A printable pre-downsize checklist — landings in all conditions, currency, CI sign-off, canopy-coach booked, the questions to answer honestly before you order a smaller canopy.
Download the PDF