View source for Dimensions (Half-Life 2 and Counter-Strike: Source)

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<noinclude></noinclude>
{{for|others|[[Dimensions]]}}
The numbers below used default configurations.
{{Note|These were only tested in {{hl2|4}} single player and {{css|4}}. While other games will use this as a base, they are not guaranteed to match the values given here.}}

== Source Engine Scale Calculations ==
The {{src|4}} engine "game unit" corresponds to the Grid Unit in [[Hammer]] and [[XSI]] editors. The Scale used for Source game maps and models is based on the [[w:Foot (length)|Imperial foot]].

{{tip|Some handy online measurement conversion calculators include [http://www.onlineconversion.com/length_common.htm distance] and [http://www.onlineconversion.com/speed_common.htm speed]. There is also [http://www.moddb.com/engines/source/downloads/hammer-units-conversion-tool another useful tool], which integrates into Hammer, for converting all three types of game units into metric or imperial units on-the-fly while working on objects.}}

{{note|Hammer units are equal to {{3dmax|4}}'s generic units. The same rule applies for {{blender|4}} (in all versions).}}

# Maps, architecture, and some prop models use a scale of '''1 foot = 16 units'''.
# Skyboxes use '''1 foot = 1 unit''' if {{ent|sky_camera}} has a scale of 16 units.
# Human character models and certain other models for Source currently use '''1 foot = 12 units'''.

Texturemaps are applied to models and brushwork in the Source engine and are therefore scaled relative to game units.
* At the default [[texturemap]] scale (0.25), '''1 texture pixel = 0.25 x 0.25 units''' (or 4x4 texels = 1 grid unit). E.g., an (undistorted) 512 x 512 texture covers 128 x 128 game units.
* At the default [[lightmap]] scale (16), '''1 lightmap pixel = 16 x 16 units'''.

Speed is usually given in map-units per second. To convert this to miles per hour, multiply by (15∕352). For kilometers per hour, multiply initial value by (12069/176000), or multiply mph value by 1.6092.


=== Map Grid Units: Quick Reference ===
{| class="standard-table" style="text-align:center; float:left"
|+ style="color:silver" | Architectural Scale (maps, architecture, certain models)
|-
! Grid		!! Imperial	!! Metric	!! style="width:16em" | Notes
|-
| 1		|| ¾″		|| 1.905 cm
|-
| 2		|| 1½″		|| ~4 cm
|-
| 4		|| 3″		|| ~7.5 cm
|-
| 8		|| 6″		|| ~15 cm
|-
| 16		|| 1′		|| ~30 cm
|-
| 28		|| 1′ 9″	|| ~55 cm	|| Player view height (crouched)
|-
| 32		|| 2′		|| ~60 cm	|| Player collision width & length
|-
| 36		|| 2′ 4″	|| ~70 cm	|| Player collision height (crouched)
|-
| 48		|| 3′		|| ~90 cm	|| "Normal" door width
|-
| ~52.49344	|| ~3′ 3¼″	|| 1 m
|-
| 64		|| 4′		|| ~1.2 m	|| Player view height (standing), "normal" corridor width
|-
| 72		|| 4′ 6″	|| ~1.4 m	|| Player collision height (standing)
|-
| 108		|| 6′ 9″	|| ~2 m		|| "Normal" door height
|-
| 128		|| 8′		|| ~2.5 m	|| "Normal" corridor height
|-
| 160		|| 10′		|| ~3 m
|-
| 256		|| 16′		|| ~5 m
|-
| 512		|| 32′		|| ~9.75 m
|}
{| class="standard-table" style="text-align:center; float:left"
|+ style="color:silver; white-space:nowrap"|Entity Scale (most characters, certain models, in-game)
|-
! Grid		!! Imperial	!! Metric
|-
| 1		|| 1″		|| 2.54 cm
|-
| 2		|| 2″		|| ~5 cm
|-
| 4		|| 4″		|| ~10 cm
|-
| 8		|| 8″		|| ~20 cm
|-
| 12		|| 1′		|| ~30 cm
|-
| 16		|| 1′ 4″	|| ~40 cm
|-
| 32		|| 2′ 8″	|| ~80 cm
|-
| ~39.37	|| ~3′ 3¼″	|| 1 m
|-
| 64		|| 5′ 4″	|| ~1.6 m
|-
| 128		|| 10′ 8″	|| ~3.25 m
|-
| 256		|| 21′ 4″	|| ~6.5 m
|-
| 512		|| 42′ 8″	|| ~13 m
|}
{{clr}}
=== Skyboxes ===
{| class="standard-table" style="text-align:center"
! Unit			!! Hammer	!! Imperial			!! Metric			!! Other/Notes
|-
| 1 skybox grid unit	|| 1		|| 1 ft				|| ~0.35 m			||  16 units within the main map
|-
| 100 yards		|| 300		|| 300 ft			|| ~92 m
|-
| 100 meters		|| ~328.1	|| ~328 1⁄12 ft			|| 1 hm				||
|-<!--  not dark sorcery, just the fraction slash &#8260;  -->
| 1 mile		|| 5,280	|| 5,280 ft			|| ~1.6 km			|| 1,670 yd
|-
| 1 acre		||  208 × 209	|| 43,560 ft² (66 ft × 660 ft)	|| ~4,047 m²			||1⁄640 mi², ~0.405 ha, 4840 yd²
|-
| 1 hectare		|| ~328 × ~328	|| ~2.471 acres			|| 10,000 m² (100 m × 100 m)	||~11,960 yd²
|}

== Player Collision Hull ==
These are the numerical values related to dimensions while mapping. They include the minimum space required for player passage. See also [[Player Hull]].
{|
|- style="vertical-align:top"
| width="33%" style="padding-right:2em" |
=== Ground Obstacle Height ===
[[File:Units01.jpg|thumb|left|This is the maximum height, in units, an object can be while still allowing the player to walk over it.]]
{{clr}}
* Crouched: 18
* Standing: 18

| width="33%" style="padding-right:2em" |
=== Overhead Obstacle Height ===
[[File:Units02.jpg|thumb|left|This is the minimum distance, in units, that can be between the ground and an object while still allowing the player to pass underneath.]]
{{clr}}
* Crouched: 37 ({{css}} 48)
* Standing: 73 ({{css}} 63)

|width=33%|
=== Minimum Path Size ===
[[File:Units03.jpg|thumb|left|This is the minimum size, in units, that can be between two objects while still allowing the player to pass between them.]]
{{clr}}
* Width: 33 (Between collision surfaces oriented along the x or y axis.)
* Width: 46 (Walls rotated 45 degrees to grid.)
* Width: 65 (On-axis width between walls skewed to 45 degrees relative to grid.)
* Height: 37
|}

=== Gradient ===
This is the maximum slope angle, in degrees from the horizontal, that the player can scale. Anything steeper than this is un-climbable.

* Gradient: 45.573°

=== Reach ===
* Automatic pick up item (ammo/weapon): 25 from center, i.e., 9 units beyond the Player Collision Hull.
* Max Distance to {{ent|+use}} switch/door-handle/etc.: 82 units.

== Player Viewpoint ==
=== Field of View ===
{{Note|Change the default Horizontal [[FOV]] in {{hl2}} by typing <code>fov_desired xx</code> in versions running on the {{src07}} engine or later, and <code>fov xx</code> in versions pre-Orange Box, where xx is the number in degrees.}}
* Player default = 75°
* View Model = 54° (<code>viewmodel_fov</code>)
* Suit Zoom = 25°
* Crossbow = 20°
* HL2 Jeep = 90° (<code>r_jeepFOV</code>)

=== Eye Level ===
This is the height above the floor on which the player is standing.
* Crouch: 28 units (+ Jump = 49 units)
* Stand/Walk/Run/Sprint: 64 units (+ Jump = 85 units)
* Jump: adds 21 units.

== Player Movement Data ==
These are the numerical values for the various settings related to movement in {{hl2|4}}.
=== Speed ===
* Crouching: 63.3 (~2.7 mph, ~4.3 kph)
* Walking: 150 (~6.4 mph, ~10.3 kph)
* Running: 190 (~8.1 mph, ~13 kph)
* Sprinting : 320 (~13.6 mph, ~21.9 kph)
* Surface Swim Speed: 152 (~6.5 mph, ~10.4 kph)
* Surface Swim Fast Speed: 256 (~11.3 mph, ~17.6 kph)
* Surface Swim Slow Speed: 120 (~5.1 mph, ~8.2 kph)
* Aux power flashlight: 43 seconds

=== Sprinting ===
* Speed: 320 units per second (~13.6 mph, ~21.9 kph)
* Max Distance: 2560 (160 ft, ~48.8 m)
* Max Duration: 8 seconds
* Recovery time: 8 seconds
==== Sprinting With Flashlight {{not|{{ep2}}}} ====
* Max Distance: 1920 (120 ft, ~36.6 m)
* Max Duration with flashlight: 6 seconds

=== Jumping ===
==== Vertical (To High Point) ====
This is the maximum height, in units, an object can be while still allowing the player to jump on top of it.
{| class="wikitable" style="text-align:center; float:left; margin:1em"
|+ {{hl2|4}}
|-
!		!! Step !! +Jump !! +Jump-Crouch
|-
| Crouching	|| 18	|| 21	 || 21
|-
| Standing	|| 18	|| 20	 || 56
|-
| Walking	|| 18	|| 20	 || 56
|-
| Running	|| 18	|| 20	 || 56
|-
| Sprinting	|| 18	|| 20	 || 56
|}
{| class="wikitable" style="text-align:center; float:left; margin:1em"
|+ {{css|4}}
|-
!		!! Step	!! +Jump !! +Jump+C	!! +C+Jump-C
|-
| Crouching	|| 18	|| 56	 || —		|| —
|-
| Standing	|| 18	|| 52	 || 61		|| 65
|-
| Walking	|| 18	|| 52	 || 61		|| 65
|-
| Running	|| 18	|| 52	 || 61		|| 65
|-
| Sprinting	|| 18	|| 52	 || 61		|| 65
|}
{| class="wikitable" style="text-align:center; float:left; margin:1em"
|+ {{gmod|4}}
|-
!		!! Step	!! +Jump !! +Jump-Crouch
|-
| Crouching	|| 18	|| 21	 || 21
|-
| Standing	|| 18	|| 30	 || 68
|-
| Walking	|| 18	|| 30	 || 68
|-
| Running	|| 18	|| 30	 || 68
|-
| Sprinting	|| 18	|| 30	 || 68
|}
{{clr}}

==== Horizontal (To Equal Height) ====
This is the maximum distance, in units, that can be between two objects of the same height, while still allowing the player to jump from one object to the other. 
* Stationary: 84
* Stationary crouched: 40
* Crouched: 99 now 62
{{Todo|what?}}
* Walking: N/A (will not jump while walking}
* Running: 176
* Running crouch-jump: 225
* Sprinting crouch-jump: 272

==== High Point to Low Point ====
This is the distance while falling to a lower point.

* Taking no damage: Drop 185 : Span 415.
* Taking 98 damage: Drop 692 : Span 540.

==== Jumping Using the Gravity Gun ====
Firing a single shot straight down at a {{ent|prop_physics}} model (<code>props_debris/metal_panel01a.mdl</code>) = 350 units

Jumping, pulling, then firing, then pulling, and firing again = 400+ units

=== Falling Damage ===
This is the damage taken when falling straight down.
* Terminal velocity: 3500 (~149mph, ~240 kph)
{| style="background:transparent"
| style="vertical-align:top" |
{| class="standard-table"
! Domain<br>Minimum || Domain<br>Maximum || Health<br>Lost
|-
| 000 || 240 || 0 
|-
| 241 || 249 || 2
|-
| 250 || 257 || 4
|-
| 258 || 265 || 6
|-
| 266 || 274 || 9 
|-
| 275 || 282 || 11 
|-
| 283 || 292 || 13 
|-
| 293 || 301 || 15 
|-
| 302 || 309 || 18 
|-
| 310 || 318 || 20 
|-
| 319 || 327 || 22 
|-
| 328 || 337 || 24
|-
| 338 || 347 || 27 
|-
| 348 || 357 || 29 
|-
| 358 || 366 || 31
|-
| 367 || 376 || 34
|-
| 377 || 387 || 36
|-
| 388 || 396 || 38
|-
| 397 || 408 || 40
|-
| 409 || 417 || 43
|-
| 418 || 428 || 45
|-
| 429 || 439 || 47
|-
| 440 || 450 || 49
|}
| style="width:30px" |
| style="vertical-align:top" |
{| class="standard-table"
! Domain<br>Minimum || Domain<br>Maximum || Health<br>Lost
|-
| 451 || 461 || 52
|-
| 462 || 472 || 54
|-
| 473 || 483 || 56
|-
| 484 || 495 || 59
|-
| 496 || 507 || 61
|-
| 519 || 529 || 65
|-
| 530 || 542 || 68
|-
| 543 || 554 || 70
|-
| 555 || 567 || 72
|-
| 568 || 579 || 75
|-
| 580 || 592 || 77
|-
| 593 || 604 || 79
|-
| 605 || 617 || 81
|-
| 618 || 630 || 84
|-
| 631 || 643 || 86
|-
| 644 || 656 || 88
|-
| 657 || 670 || 90
|-
| 671 || 683 || 93
|-
| 684 || 697 || 95
|-
| 698 || 711 || 97
|-
| 712 || 725 || 99
|-
| 726 || <32768 || 100
|}
|}

{{Note|Falling into water ≥2 units deep negates all fall damage.}}

=== Swimming Underwater ===
* Speed: 152 (~6.5 mph, ~10.4 kph)
* Sinking Speed (no keys): 48 (~2.0 mph, ~3.3 mph)
* Max Distance (no damage): 2523 (~158 ft, ~48 m)
* Max Distance (still alive): 3848 (~241 ft, ~73 m)
* Max Depth & return to surface (no damage): 1325 (~82.8 ft, ~25 m)
* Max Depth & return to surface (10 hp remaining): 2000 (125 ft, ~38 m)

==== Swimming Underwater With Flashlight ====
* Max Distance (no damage): 2170 (~136 ft, ~41 m)
* Max Distance (still alive): 3535 (~221 ft, ~67 m)
* Max Depth & return to surface (no damage): 1190 (~74 ft, ~23 m)
* Max Depth & return to surface (still alive): 1850 (~116 ft, ~35 m)

== Vehicles ==
=== Buggy ===
* Buggy speed normal: 821.3 (~35 mph, ~56 kph)
* Buggy reverse: 469.3 (~20 mph, ~32 kph)
* Buggy speed turbo: 1173.3 (~50 mph, ~80 kph)
* Climb angles: ramp = 3900 l × 1670 h, 564 l × 504 h
* Climb angle from stopped: 63 deg
* Climb angle no turbo: 66 deg
* Climb angle turbo: 50° long, 42° short
* Jump distance normal: 216
* Jump distance turbo: 860
* Overhead obstacle height: 90
* Minimum path width: 118
* Stall depth: 40, sputters at 37

=== Airboat ===
* Airboat forward: 797.9 (~34 mph, ~55 kph)
* Airboat reverse: 797.9 (~34 mph, ~55 kph)
* Climb angle no full throttle momentum: 55
* Jump distance same height: 856 
* Overhead obstacle height: 86
* Minimum path width: 86

=== Muscle Car ===
{{Todo|Muscle Car}}

== See also ==
* [[Coordinates]]
* [[AI Metrics]]
* [[NPC Hull]]
* [[Exploits]]