Precise calculators for student pilots, CFIs, and experienced aviators. No account needed — create one to save your work.
CG, total moment, and full loadout breakdown.
LivePA from altimeter setting, DA from OAT and ISA.
LiveHeadwind and crosswind from any wind report.
LivePlan fuel load with reserves and alternates.
LiveEstimate cloud base from OAT and dewpoint.
LiveMax glide range from altitude and glide ratio.
LiveRequired rate of climb/descent for any gradient.
LiveDirect, teardrop, or parallel entry from any heading.
LiveConvert headings and courses using variation and deviation.
LivePaste raw weather reports for plain-English breakdowns.
LiveTAS, wind correction, time/distance/fuel, and more.
LiveEnter weights and arm distances to calculate CG and total moment.
Free aircraft weight and balance calculator for general aviation pilots. Enter weights and arm distances for pilot, passengers, baggage, and fuel to instantly calculate your center of gravity (CG), total moment, and total weight. Works for Cessna 172, Piper Cherokee, Cirrus SR22, and any GA aircraft. Supports lbs/inches and kg/cm. Required for every flight — verify your aircraft is within CG limits before departure.
| Item | Weight (lbs) | Arm (in) | Moment (lb·in) |
|---|
Compute PA and DA from field conditions.
Free pressure altitude and density altitude calculator for pilots. Pressure altitude formula: PA = (29.92 − Altimeter Setting) × 1,000 + Field Elevation. Density altitude formula: DA = PA + (OAT − ISA) × 120. Essential for takeoff performance planning, especially at high-elevation airports or on hot days. Includes built-in ISA temperature calculator. Supports °F and °C.
Headwind and crosswind from any wind report and runway.
Free crosswind component calculator for pilots. Enter the wind direction, wind speed, and runway heading to instantly calculate the headwind component and crosswind component in knots. Essential for pre-flight planning and determining whether wind conditions are within your aircraft's demonstrated crosswind limits. Works with any runway and any wind report including ATIS and METAR winds.
Plan your fuel load with reserves and alternates.
Free aviation fuel burn calculator for VFR and IFR flight planning. Enter your fuel burn rate, flight time, and reserve requirements to calculate trip fuel, reserve fuel, alternate fuel, and total fuel required. Supports gallons and liters. Includes FAA VFR reserve requirements (30 minutes day, 45 minutes night) and IFR alternate fuel planning. Converts total fuel to pounds for weight and balance.
Estimate cloud base height from surface observations.
Free cloud base calculator for pilots. Estimates the height of the cloud base above ground level (AGL) using the temperature/dewpoint spread method. Formula: Cloud Base ≈ Spread × 400 ft per °C (or × 227 ft per °F). Enter outside air temperature (OAT) and dewpoint from a METAR or surface observation to estimate convective cloud base height. Useful for VFR flight planning and determining ceiling estimates.
Maximum glide range from altitude and best glide ratio.
Free glide distance calculator for pilots. Calculate maximum glide range in nautical miles and statute miles from any altitude using your aircraft's best glide ratio. Includes wind correction — enter headwind or tailwind component for an accurate wind-adjusted glide distance. Also calculates time to ground. Essential for engine-out emergency planning. Works for all general aviation aircraft including Cessna 172 (9:1), Cherokee (9:1), and Cirrus SR22 (10:1).
Wind-corrected glide ratio = Vbg ± Wind / (Vbg / L:D)
Required rate for any gradient or altitude change.
Free aviation climb and descent calculator for pilots. Calculate required rate of climb (ROC) to reach an altitude in a given time, required rate of descent (ROD) for a given gradient and ground speed, vertical speed indicator (VSI) setting for any descent gradient percentage, and top of descent (TOD) point for IFR arrivals. Essential for IFR flight planning, RNAV approaches, and ATC compliance. Includes standard 3% and 5.2% glidepath calculations.
Determine correct FAA entry procedure based on your heading at the fix.
Free holding pattern entry calculator for IFR pilots. Determines the correct FAA entry procedure — direct entry, teardrop entry, or parallel entry — based on your aircraft heading at the fix and the holding course. Supports both inbound and outbound course input, and both right-turn (standard) and left-turn (non-standard) holding patterns. Based on FAA AIM holding entry sector criteria. Essential for IFR rating students and instrument pilots.
Convert between true and magnetic headings using magnetic variation and deviation.
Free true to magnetic heading converter for pilots. Convert between true heading, magnetic heading, and compass heading using magnetic variation and compass deviation. Supports True → Magnetic, Magnetic → True, and Compass → True conversions. Essential for flight planning, VOR navigation, and cross-country flying. Applies the "East is least, West is best" rule automatically. Enter your local magnetic variation from a sectional chart or METAR.
Paste any raw METAR or TAF and get a plain-English breakdown of every element.
Free METAR and TAF decoder for pilots. Paste any raw METAR or TAF weather report and instantly get a plain-English translation of every element — wind direction and speed, visibility, sky conditions, temperature, dewpoint, altimeter setting, and remarks. Decodes all standard ICAO METAR codes including CB, TCU, TS, TSRA, FZRA, RVR, wind shear, precipitation begin/end times, sea-level pressure, and more. Works with reports from aviationweather.gov, ForeFlight, and all other sources.
Essential navigation and planning calculations.
Free online E6B flight computer calculator for pilots. Calculate true airspeed (TAS) from calibrated airspeed, pressure altitude, and outside air temperature using the ICAO density ratio formula. Wind correction angle (WCA) and ground speed from true course, TAS, wind direction, and wind speed. Time, distance, and fuel calculations from ground speed, distance, and fuel burn rate. Replaces the physical E6B whiz wheel for preflight planning.
All your saved calculations across every tool — click any row to reload it.