Wingload for Skydiving vs Parachute Log

A simple wing load calculator for skydiving. Wing loading is a measurement of how much total weight is supported by how large a wing, and is expressed in pounds per square foot. This tool lets you calculate your wing load using both metric and imperial units. You can also compare your wing loading on different sizes of canopies using the compare feature.

Parachute Log is the iOS app for tracking parachute operations — built for military paratroopers, sport skydivers, and jumpmasters who need fast, detailed, reliable records of every jump. QUICK JUMP LOGGING Log a jump in seconds with a streamlined form that captures everything that matters: • Date and location — manual or auto-detected via GPS with reverse geocoding • Jump type — Static Line, Freefall, Mass Tactical, or Tandem • Aircraft, exit altitude, and MSL — in feet or meters • Duty position — Student, Parachutist, or Jumpmaster • Canopy type and sortie count • Conditions — Day/Night, Equipment/Hollywood, Water, and Oxygen Save your most-used values as defaults so repeat jumps take just a few taps. Swipe to duplicate a previous jump and pre-fill the form for similar operations. LIVE WEATHER Real-time weather from the Open-Meteo API records temperature, wind speed, wind direction, and conditions alongside every jump. Units respect your preferences — Fahrenheit/Celsius, mph/km/h. JUMP HISTORY Browse your complete log in a searchable, chronological list. Each entry shows jump number, type, date, location, altitude, aircraft, duty position, and condition badges at a glance. Search across any field. Swipe to duplicate or delete. VISUAL STATISTICS Analytics dashboard with four time-range filters (30 days, 90 days, 1 year, all time): • Summary card — total jumps, total sorties, last jump date • Jump type breakdown — horizontal bar chart • Duty position distribution — color-coded donut chart • Conditions frequency — bar chart per condition HOME SCREEN WIDGET Keep your jump status visible without opening the app: • Total jump count • Days since last jump • Color-coded currency status indicator — green / orange / red based on 30/90-day thresholds • Tap to open the Log Jump screen DATA EXPORT AND IMPORT Your data is yours. Export in three formats: • CSV — open in any spreadsheet • JSON — structured backup or transfer • PDF — print-ready, formatted document Import previously exported JSON to restore or migrate. FLEXIBLE SETTINGS • Appearance — System, Light, Dark • Imperial / metric units for altitude, temperature, wind • Default aircraft, canopy, duty position, jump type • Independent toggles for auto-location and auto-weather WHO IT'S FOR Military paratroopers maintaining accurate logs for promotion boards, unit records, and currency tracking. The Equipment/Hollywood toggle, Mass Tactical type, oxygen indicator, and Jumpmaster duty position are built for airborne operations. Sport skydivers building a personal logbook with freefall and tandem jump types. Jumpmasters and instructors logging multiple jumps per session using duplicate and defaults. PRIVACY No accounts. No cloud. No tracking. Everything stays local. Export what you want, when you want. Requires iOS 17 or later.