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

For others, see Dimensions.

The numbers below used default configurations.

Note:These were only tested in

Half-Life 2 single player and

Counter-Strike: Source. While other games will use this as a base, they are not guaranteed to match the values given here.

Source Engine Scale Calculations

The Source 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 Imperial foot.

Tip:Some handy online measurement conversion calculators include distance and speed. There is also 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

3DS Max's generic units. The same rule applies for

Blender (in all versions).

Maps, architecture, and some prop models use a scale of 1 foot = 16 units.
Skyboxes use 1 foot = 1 unit if 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

Architectural Scale (maps, architecture, certain models)
Grid	Imperial	Metric	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

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

Skyboxes

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
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.

Ground Obstacle Height

This is the maximum height, in units, an object can be while still allowing the player to walk over it.

Crouched: 18
Standing: 18

Overhead Obstacle Height

This is the minimum distance, in units, that can be between the ground and an object while still allowing the player to pass underneath.

Crouched: 37 ( 48)
Standing: 73 ( 63)

Minimum Path Size

This is the minimum size, in units, that can be between two objects while still allowing the player to pass between them.

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 +use switch/door-handle/etc.: 82 units.

Player Viewpoint

Field of View

Note:Change the default Horizontal FOV in

by typing fov_desired xx in versions running on the

engine or later, and fov xx in versions pre-Orange Box, where xx is the number in degrees.

Player default = 75°
View Model = 54° (viewmodel_fov)
Suit Zoom = 25°
Crossbow = 20°
HL2 Jeep = 90° (r_jeepFOV)

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 Half-Life 2.

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 in )

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.

Half-Life 2
	Step	+Jump	+Jump-Crouch
Crouching	18	21	21
Standing	18	20	56
Walking	18	20	56
Running	18	20	56
Sprinting	18	20	56

Counter-Strike: Source
	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

Garry's Mod
	Step	+Jump	+Jump-Crouch
Crouching	18	21	21
Standing	18	30	68
Walking	18	30	68
Running	18	30	68
Sprinting	18	30	68

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 prop_physics model (props_debris/metal_panel01a.mdl) = 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)

Domain Minimum	Domain Maximum	Health 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

Domain Minimum	Domain Maximum	Health 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