Calculation tools

This page lists various fan-made tools that can help calculations related to the gameplay of Kerbal Space Program. Unlike addons, they do not directly influence the game, as they are run separately.

How hard is rocket science anyway?

Online tools and calculators

Orbit and maneuver calculators

Title	Developer	Desciption	Last Update	KSP Version compatibility	Notes	Forum post	Link
Interactive illustrated interplanetary guide and calculator	Olex	Calculates Δv and angles for orbital transfer between celestial bodies	2013	0.22	Based on this forum post	forum post	http://ksp.olex.biz/
Launch Window Planner	alexmoon	Provides a total Δv calculation for orbital transfer based on launch parameters	6 Apr 2014	0.23.5	open source (License: CC BY-NC-SA 4.0)	forum post	http://alexmoon.github.io/ksp/
KSP Aerobraking Calculator	alterbaron	Calculates a maneuver to perform the intended aerobraking	20 Nov 2013	0.22	open source	forum post	http://alterbaron.github.io/ksp_aerocalc/
Where can I go?	GavinZac	Calculates possible destinations based on given Δv			source code	forum post	http://mononyk.us/wherecanigo.php
MrFibble's KSP Calculators	MrFlibble1978	Tools to calculate information on orbits	Feb 2014	0.23		steam community thread	Satellite Distribution Calculator Orbital Period Calculator KSP Multi Calculator
Delta V Calculator	interwound	Gives Δv required to reach a celestial body with or without a round trip					http://deltavmap.com/
Lead angle calculator		Calculates the lead angle to reach a target orbit					http://instacalc.com/16221
Resonance orbit calculator		Calculates periapsis based on orbit height and the requested orbital resonance			based on wiki information and this forum post		http://www.ksp.interrutt.com/

Part and construction calculators

Title	Developer	Desciption	Last Update	KSP Version compatibility	Notes	Forum post	Link
KSP Optimal Rocket Calculator	GaryCourt	Generates a rocket design optimized for the given parameters	1 Apr 2014	0.23.5	open source (License: permissive)	forum post	http://garycourt.github.io/korc/
KSP Parachute Calculator	check	Calculates the needed mass and type of parachutes for landers	19 Sep 2013	0.21.1		forum post	http://ksp.freeiz.com/
Engine Cluster Calculator	blizzy	Generates an engine layout for a given payload (asparagus staging)	8 Apr 2014	0.23.5	Based on this forum post		http://blizzy.de/asparagus/
KSP Calculator	Cameron Hessler	Escape velocity and stage Δv calculators	2012	0.16			http://www.kerbalspacecalculator.net16.net/index.php
Thrust calculator		Calculate TWR based on engines, fuel, payload and gravity					http://iyates.co.uk/ThrustCalc/
KSP Planner	eschatonic	Staged rocket planner and Δv calculator		0.22		reddit post	http://dhmholley.co.uk/ksplanner/
Craft Fixer	Ezriilc	Fixes duplicate ids in .craft files and can optionally remove add-on parts	12 Apr 2014	0.23.5		forum post	http://www.kerbaltekaerospace.com/?page=craftkitchen

Science

Title	Developer	Desciption	Last Update	KSP Version compatibility	Notes	Forum post	Link
KSP Science Calculator		Calculates amount of science gained in different environments		0.23 (see notes)	data based on the wiki article on science - Does not include Kerbol (16-04-2014)	reddit post	Google Drive link
Remaining Science	acalculus	Reads save file and displays remaining science for all celestial objects and experiments	9 Apr 2014	0.23.5	open source	forum post	http://kerbal-science-remaining.s3-website-us-east-1.amazonaws.com/
Simple Science Summary	Oarc	Provides an overview of science done and remaining based on a save file and science definitions file	27 Mar 2014	0.23 (possibly version agnostic)	open source (entirely client-side javascript)	forum post	http://oarcinae.us/ScienceParser/kspScienceParser.html
Science Checklist	celem	Generates a table for each celestial body showing what science is available	6 Mar 2014	0.23.5	open source (entirely client-side javascript) (License: customized BSD, see forum post)	forum post	http://www.celemsoft.net/kspsci.html
Kerbal Maps		Like Google maps but for KSP			Using this calculator with Kerbal Maps can be helpful, as suggested in this forum post		http://www.kerbalmaps.com/

Deprecated

The tools in this table are known but are un-maintained or are too old to be relevant to recent versions of KSP

Title	Developer	Desciption	Last Update	KSP Version compatibility	Notes	Forum post	Link
Fairing Factory	Nathan Nifong	Generates a downloadable fairing based on the given design			non-functional (16-04-2014)	lost	http://nathannifong.com/FairingFactory/

Offline applications

These tools can be downloaded and used offline. Keep in mind that the presence of an application here does not mean it has been tested or is otherwise trustworthy - apply reasonable caution when downloading and running the below applications. Generally, if something is widely used, it should be safe.

Title	Developer	Desciption	Last Update	KSP Version compatibility	Notes	Platform	Forum post	Link
KSP Utilities	ROFLCopter64bit	Utility collection primarily for save file handling and analysis	4 Apr 2014	0.23.5	open source (License: LGPL v3+)	Windows (pre-compiled) (author reports partial cross-platforming from source)	forum post	(multiple downloads - see forum post)
Trajectory Optimization Tool	Arrowstar	Helps find optimal burn trajectories for interplanetary transfers	9 Feb 2014	0.23	Matlab-based (License: CC BY-NC-ND 3.0 US)	Windows	forum post	(has dependencies - see forum post)
KSP Rocket Calculator	VRGhost	Calculates rocket properties and aids in the design process	31 Oct 2012	0.17.1	open source	Python		(python script - use source)
De-orbit and Staged Ascent Simulators	Shane Colton	Calculate a de-orbit maneuver to land on a specific part of a celestial object - Evaluate whether a staged craft can reach orbit	22 Dec 2013	0.23	Scilab scripts	Scilab (see external tools section)	blog post	(see blog post for .sce files)
Zord's KSP Multi-calculator	Lord_Zord	Calculate Δv, effective Isp, TWR and acceleration	23 Feb 2014	0.23	binary and python components (License: MIT) - author informs that Avast AV gives a false positive with the file (16-04-2014)	Windows (possibly cross-platform, see downloads provided)	forum post	http://sourceforge.net/projects/zordskspcalc/
KSP Calculators	Jonv4n	Semi-major axis and orbital period calculations	18 Jul 2013	0.20.2	LibreOffice Calc and MS Excel spreadsheets	LibreOffice Calc (cross-platform) / MS Excel	forum post	(multiple downloads - see forum post)
Fix my docking	Alo	Finds and fixes bugs with docking ports from a quicksave	16 Apr 2014	0.23.5 (unclear)	open source (License: CC BY-NC-SA 4.0) - written in Pascal	Windows	forum post	dropbox (.exe)
Delta V Calculator	freeskier93	Calculates Δv for target celestial body with orbit height, inclination, angle and launch height are used to compute the final value	22 Mar 2014	0.23.5	open source (License: GPL v2) Matlab-based - large dependency (MCR)	Windows	forum post	dropbox (.exe)

Deprecated

Title	Developer	Desciption	Last Update	KSP Version compatibility	Notes	Platform	Forum post	Link
KSP Orbital Calculator	Warringer	Calculates orbital speeds for circular orbit injections			open source (License: LGPL)	Java	forum post	Google Code (zip file)
KSP Orbit Mechanic	WX_Echo	Optimizes orbits	19 Aug 2012			Java	forum post	mediafire (zip file)

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Mobile

Title	Developer	Desciption	Last Update	KSP Version compatibility	Platform	Notes	Forum post	Link
KSP Orbit Calculator	Zeno	Calculates Δv and angles for orbital transfer between celestial bodies (see notes)	27 Jul 2013 (google play) - 12 Aug 2013 (source)	0.22 (see notes)	Android (2.3.3+)	based on Olex's calculator - open source (License: WTFPL])	forum post	Google Play link
KSP Orbit	Eric Meythaler	Calculates orbit characteristics	20 Jul 2011	0.8.5	Android (2.1+)			Google Play link
KSP Delta-V Calculator	Iodyne Labs	Calculates Δv per stage	10 Apr 2014	0.23.5	Android (4+)			Google Play link
KSP DeltaV Calculator	Julien Quartier	Calculates Δv required to reach celestial objects	2 Jan 2014	0.23	Android (2.2+)			Google Play link

External tools not directly related to KSP

Online

Title	Developer	Desciption	Last Update	Notes	Forum post	Link
Delta-V Calculator and Rocket Simulator	Joe Strout	Calculate Δv - Simulate rocket flight	14 Oct 2009 - 29 Jan 2000	Intended for Earth-based craft - Java source available		Δv calculator Rocket simulator
Δv calculator for LEO/MEO/GEO injection	Eric Johnston (Satellite Signals)	Calculate Δv to transfer to various orbital levels based on initial low orbit	20 Nov 2013	Intended for Earth-based craft		delta-v-geo-injection-calculator.htm

Offline

Title	Developer	Desciption	Last Update	Notes	Platform	Forum post	Link
Scilab	Scilab Enterprises	General scientific computing software - contains aerospace and celestial mechanics modules (ATOMS)	2013	open source (License: CeCILL GPL-compatible) Can convert Matlab scripts to its own format	Cross-platform (Windows, MacOSX, GNU/Linux)		http://www.scilab.org/
GNU Octave	John W. Eaton (and others)	General scientific computing software - no specific related modules or packages, but might be preferable for some	2013	open source (License: GPL v3) Syntax is highly compatible with Matlab	Cross-platform (Windows, MacOSX, Unix/Unix-like)		http://www.gnu.org/software/octave/index.html
Sage	William A. Stein (and others)	General scientific computing software - utilizes other computational software as part of its backend	30 Jan 2014	open source (License: Multiple (FOSS)) Very practical for python users	MacOSX, Unix/Unix-like (binaries), Windows (virtualization)		http://www.sagemath.org/
Anaconda	Continuum Analytics	General scientific computing software - primarily a python scientific computing frontend	9 Apr 2014	(License: EULA) An alternative to Sage on Windows for python computing	Cross-platform (Windows, MacOSX, GNU/Linux)		https://store.continuum.io/cshop/anaconda/

See Also

• Tutorials