Free Tools
Skydiving
Calculators
Free tools built for skydivers. Work out your wing loading, check your currency, and make better decisions before you manifest.
Gear & Safety
Wing Loading Calculator
Enter your body weight, gear weight, and canopy size to calculate your wing loading and find out where you sit on the safety spectrum.
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Gear & Safety
Canopy Size Chart
Form 330, made readable. Find your minimum canopy size under British Skydiving regulations — by exit weight, qualification level, and experience. Full interactive chart.
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Airtime
Freefall Time Calculator
Add your jumps by discipline — belly, freefly, sit flying, tracking, wingsuit, and get your total freefall time. Per-discipline exit altitudes and shareable results.
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Readiness
Currency Calculator
Enter your licence type and last jump date to find out if you need daily drills, a refresher course, or a full currency review before your next jump.
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Skydiving Calculators for UK Jumpers
All four calculators are free, require no account, and are built for skydivers. The wing loading calculator covers both KG and LBS and lets you share your setup via URL. The canopy size chart turns British Skydiving Form 330 into an interactive tool — full chart for Standard, CT2, CT3 and CT4. The freefall time calculator handles multiple disciplines with per-discipline exit altitudes and shareable results. The currency calculator covers British Skydiving and USPA licence holders separately.
More calculators coming — if there's a specific calculation you'd find useful, let us know.