Aviation & Aerospace

AviationCalcs

Engineering calculators for PPL pilots and aerospace engineering students.

25+ calculators Offline Dark mode

PPL Pilots Aerospace Eng.

PPL & Pilot

Calculators for the private pilot license and aerial navigation.

Weather

Navigation

Performance

Aerospace Engineering

Aerodynamics, performance, propulsion and orbital mechanics.

Aerodynamics

Performance

Propulsion

Orbital Mechanics

Flight Briefing Generator

All-in-one pre-flight briefing. Enter origin, destination and aircraft data to get live weather, route, fuel and performance in a single document.

PPL · Weather

METAR / TAF Decoder

Search by airport to auto-fetch live METAR & TAF — or enter strings manually below.

🛜 Requires internet connection · Data: NOAA

METAR

METAR string

Runway in use — optional (for wind components)

TAF

TAF string

PPL · Weather

SIGMET Decoder

SIGMET (Significant Meteorological Information) — Meteorological report describing significant en-route phenomena that may affect the safety of aircraft operations. Supports WS (En-Route), WV (Volcanic Ash), and WC (Tropical Cyclone) formats per ICAO Annex 3.

Full SIGMET string (ICAO format)

Ejemplos rápidos

PPL · Weather

Cloud Base Estimator

Temperature (°C)

Dew Point (°C)

Aerodrome Elevation (ft MSL) optional

PPL · Weather

Density Altitude

Field Elevation (ft)

QNH / Altimeter (hPa)

Temperature OAT (°C)

PPL · Weather

Cloud Base + Density Altitude

Search by airport to auto-fill conditions — or enter values manually below.

🛜 Requires internet · Data: NOAA

Temperature OAT (°C)

Dew Point (°C)

Aerodrome Elevation (ft MSL)

QNH (hPa)

PPL · Weather

ISA Atmosphere

International Standard Atmosphere (ICAO 1993) — standard temperature, pressure and density at altitude, referenced to sea-level conditions of 15 °C and 1013.25 hPa.

Altitude ft m

PPL · Navigation

Headings — True / Magnetic / Compass

True Heading → Magnetic → Compass. Enter the true heading and corrections.

True Heading (°)

Magnetic Variation (°E +, W −)

Compass Deviation (°E +, W −)

PPL · Navigation

Wind Correction Angle (WCA) & Ground Speed

Desired Track (°)

TAS (kt)

Wind Direction (°)

Wind Speed (kt)

PPL · Navigation

Great Circle Distance

Origin (ICAO / IATA)

Destination (ICAO / IATA)

PPL · Navigation

Holding Pattern

Visualize entry sectors (Direct, Parallel, Teardrop) based on aircraft heading and hold course. Standard right-hand pattern by default.

Direct

Parallel

Teardrop

Aircraft Heading (°)

Hold Course

Turn Direction

Compass View

Inbound Course

270°

Outbound Course

090°

Inbound Heading

270°

Outbound Heading

090°

Entry Type

—

PPL · Performance

IAS ↔ TAS

Mode

IAS (kt)

Pressure Altitude (ft)

OAT (°C) ISA ↙

PPL · Performance

Takeoff & Landing Distance

⚠️ Reference only. These values are approximate estimates based on published POH data under standard conditions (paved, level, dry runway). Always consult the official POH/AFM of your specific aircraft before any flight. Performance varies with aircraft configuration, weight, surface condition, and other factors.

Search by airport to auto-fill elevation, QNH, OAT and calculate wind component.

🛜 Requires internet · Data: NOAA

Aircraft

Field Elevation (ft)

QNH (hPa)

OAT (°C)

Wind Component (kt) + head / − tail

Runway Surface

Data sources (pre-loaded aircraft):
Cessna 172S — POH §5 (BEFA / Cessna, Rev. 2019)
Cessna 152 — POH §5 (Wayman Aviation / Cessna)
PA-28-161 Warrior II — POH §5 (Basic6Aviation / Piper, VB-1180, 1982)
PA-28-181 Archer III — POH §5 (FoxFlying / Piper, VB-1563, 1994/1998) — values interpolated from charts
Diamond DA40 — Tables extracted from official POH §5 (diamondaviators.net)
Robin DR400/180R — POH Supplement §5 Tablas 5-2/5-13 (Robin / EASA, Issue 3, Jul 2014)
SOCATA TB10 Tobago — POH §4 via euroga.org ⚠️ no direct PDF available — verify against aircraft POH
Tecnam P2002 Sierra MkII — Flight Manual §4 (Delta Aviation / Tecnam, Rev.4, 2008) · Base conditions: dry/firm grass (POH standard); paved runway ≈ 6% less ground roll

PPL · Performance

Fuel Requirements

Rules

Fuel unit

Trip distance (NM) optional

Groundspeed (kt) optional

Trip time (min)

Burn rate (L/h)

Start, Taxi & Run-up (min)

Fuel to Alternate Airport (min) advisory for VFR

Final Reserve (min)

Extra fuel (min) optional

Aerospace · Aerodynamics

Mach Number

Mach reference — critical speeds

Aircraft	Type	Cruise	MMO / Max
Airbus A320	Narrowbody jet	M0.78	M0.82
Boeing 737	Narrowbody jet	M0.79	M0.82
Airbus A330	Widebody jet	M0.82	M0.86
Boeing 787	Widebody jet	M0.85	M0.90
Airbus A350	Widebody jet	M0.85	M0.89
Boeing 747	Widebody jet	M0.85	M0.92
Boeing 777	Widebody jet	M0.84	M0.89
Concorde	Supersonic airliner	M2.02	M2.02
F-16 Fighting Falcon	Fighter jet	—	M2.05
F-22 Raptor	Fighter jet	—	M2.25
SR-71 Blackbird	Recon aircraft	M3.2	M3.3
X-15	Experimental	—	M6.7
Source: Wikipedia

Mode

Velocity m/s kt km/h mph

Mach Number

Altitude m ft

OAT (°C) — leave blank to use ISA conditions

Aerospace · Aerodynamics

Reynolds Number

NACA Profile — optional preset

Velocity m/s kt km/h

Chord / Length m cm ft

Altitude m ft

OAT (°C) — leave blank to use ISA conditions

Aerospace · Aerodynamics

Lift & Drag

Aircraft preset

Velocity m/s kt km/h

Altitude — ISA density m ft

Wing Area S (m²)

C_L — Lift coefficient

C_D — Drag coefficient

Weight W — optional, for load factor kg N

Aerospace · Aerodynamics

Stall Speed

Aircraft preset

Weight W kg N

Altitude — ISA density m ft

Wing Area S (m²)

CL_max

Load Factor n — optional

Aerospace · Aerodynamics

ISA Atmosphere

International Standard Atmosphere (ICAO 1993) — standard temperature, pressure and density at altitude, referenced to sea-level conditions of 15 °C and 1013.25 hPa.

Altitude m ft

Aerospace · Orbital Mechanics

Hohmann Transfer

Two-impulse transfer between two coplanar circular orbits. Calculates Δv burns, transfer time, and orbital velocities.

Input mode:

Initial orbit radius r₁ (km)

Final orbit radius r₂ (km)

Celestial body

Aerospace · Orbital Mechanics

Vis-Viva — Orbital Parameters

Full orbital characterization from semi-major axis and eccentricity. Computes periapsis/apoapsis velocities, orbital period, specific energy, and more.

Semi-major axis a (km)

Eccentricity e (0 = circular)

Celestial body

Aerospace · Propulsion

Multi-Stage Rocket Staging

Applies the Tsiolkovsky equation independently to each stage. Stage 1 fires first (bottom of rocket); Stage N fires last, carrying only the payload.

ms (structural mass) = dry mass of that stage only — tanks, engines, interstage structure. It does not include propellant or upper stages.

Model assumptions: ideal vacuum, instantaneous burns, constant Isp per stage. Real launches add ~1.5–2 km/s of gravity & drag losses not accounted for here.

For single-stage analysis → Tsiolkovsky Rocket Equation

Rocket preset (auto-fills all parameters)

Number of stages

Payload mass (kg)

Aerospace · Propulsion

Tsiolkovsky Rocket Equation

For multi-stage analysis → Multi-Stage Staging calculator

Scenario preset (auto-fills fields, leaves one blank to solve)

Δv (m/s)

Isp (s)

Initial mass m₀ (kg)

Final mass mf (kg)

Thrust F (N) optional — burn time

Structural mass (kg) optional — ε efficiency

Aerospace · Propulsion

Specific Impulse (Isp)

Trajectory analysis → Tsiolkovsky · Multi-Stage Staging

Engine / propellant preset (auto-fills fields, leaves one blank to solve)

Specific Impulse Isp (s) leave blank to solve

Thrust F N kN lbf

Mass flow rate ṁ (kg/s) leave blank to solve

Rocket total mass m (kg) optional — TWR

Aerospace · Performance

Breguet Range Equation

Related → Specific Impulse · Tsiolkovsky Δv

Aircraft preset

Cruise speed V m/s kt

TSFC (kg/N·s)

Lift-to-Drag ratio L/D

Initial mass m₀ kg lbs

Final mass m_f (kg)

Aerospace · Performance

Load Factor

Related → Stall Speed · Lift & Drag

Aircraft category

Bank Angle φ (°)

Speed V — for turn kinematics kt m/s km/h

V_s1 1g stall — optional kt

Weight W — optional kg lbs

Reverse — bank angle from target n

Target n (g)

PPL · Navigation

Alternate Airports

Find all airports within a given radius. Select an airport or enter coordinates manually, set the radius, and apply optional filters.

Reference Airport (ICAO / IATA)

Radius: NM

25100200300400500600

Min. runway length ft m

Exclude reference airport

Pre-Flight

Flight Briefing Generator

AIRPORTS

✈ Departure

🏁 Destination

🔄 Alternate (optional)

AIRCRAFT & MISSION

Aircraft (TOLD data)

Flight Rules

Cruise Altitude (ft)

TAS (kt)

Fuel Burn

Runway Surface

WINDS ALOFT (at cruise altitude — enter manually)

Wind Direction (°T)

Wind Speed (kt)

Magnetic Variation (°E/W)

DEPARTURE TIME (for sunrise/sunset analysis)

Departure Time UTC Local

🗺️ Route Map

☁️ Weather

🧭 Navigation

⛽ Fuel Requirements

📊 Takeoff & Landing Performance

🌅 Sunrise & Sunset

⚠️ NOTAMs

🌩️ SIGMETs & AIRMETs

📄 Text Summary

Includes METAR, TAF (when loaded) and pasted NOTAMs.

⚠️ For training and reference only. Always verify data against official sources (AIP, NOTAMs, aircraft POH/AFM) before flight.

About

About AviationCalcs

AviationCalcs is a free, browser-based suite of precision calculators for PPL students and Aerospace engineering students. No sign-up, no ads, no tracking — just the tools.

PPL & Pilot

Tools for the Private Pilot Licence and aerial navigation

METAR / TAF Decoder
SIGMET Decoder
Cloud Base & Density Altitude
ISA Standard Atmosphere
Headings (True / Magnetic / Compass)
Wind Correction Angle & Ground Speed
Great Circle Distance
Holding Pattern
Alternate Airports
IAS ↔ TAS Converter
Takeoff & Landing (TOLD)
Fuel Requirements
Flight Briefing Generator

Aerospace

Engineering calculators for aerodynamics, propulsion & orbital mechanics

Mach Number
Reynolds Number
Lift & Drag
Stall Speed
Load Factor
Breguet Range Equation
Specific Impulse (Isp)
Tsiolkovsky Rocket Equation
Multi-Stage Rocket Staging
Hohmann Transfer Orbit
Vis-Viva Orbital Parameters

🔓

Free & open No paywalls, no account required. Always.

🍪

Privacy-first No cookies, no fingerprinting. Analytics via Plausible (cookieless).

⚡

Fast & lightweight Vanilla HTML, CSS and JS. No frameworks. Works offline.

✈️

Orientative use only Results are for study and reference — not for operational flight planning.

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