Scale Conversion Tables
Conversion Tables
Here you will find several tables provided to assist you in determining scale ratios and/or dimensions.
Please note many modelers refer to scale as a fraction, while others refer to it as a ratio. For instance, 1/48 is also referred to as 1:48. Both are correct.
POPULAR MODELING SCALES
| HOBBY SCALE | HOBBY DESCRIPTION | 1 ACTUAL INCH = |
1 SCALE FOOT = (FRACTION) |
1 SCALE FOOT = (DECIMAL) |
1 SCALE METER = (METRIC) |
| 1/4 | LIVE STEAM TRAINS FLYING MODELS |
4″ | 3″ | 3 | 250.0mm |
| 1/8 | LIVE STEAM TRAINS CARS, MOTORCYCLES |
8″ | 1-1/2″ | 1.50 | 125.0mm |
| 1/12 | DOLLHOUSES CARS, MOTORCYCLES |
1′-0″ | 1″ | 1 | 83.3mm |
| 1/16 | LIVE STEAM TRAINS CARS, MOTORCYCLES |
1′-4″ | 3/4″ | .75 | 62.5mm |
| 1/20 | CARS | 1′-8″ | 19/32″ | .60 | 50.0mm |
| 1/22.5 | G SCALE TRAINS | 1′-10″ | 17/32″ | .53 | 44.4mm |
| 1/24 | CARS, DOLLHOUSES, TRUCKS | 2′-0″ | 1/2″ | .50 | 41.7mm |
| 1/25 | CARS, TRUCKS | 2′-1″ | 15/32″ | .48 | 40.0mm |
| 1/32 | NO. 1 TRAINS AIRCRAFT, CARS, 54mm FIGURES |
2′-8″ | 3/8″ | .375 | 31.3mm |
| 1/35 | ARMOR | 2′-11″ | 11/32″ | .343 | 28.6mm |
| 1/43 | CARS, TRUCKS | 3′-7″ | 9/32″ | .279 | 23.3mm |
| 1/48 | O SCALE TRAINS AIRCRAFT, ARMOR, 1/4″ SHIPS |
4′-0″ | 1/4″ | .250 | 20.8mm |
| 1/64 | S SCALE TRAINS AIRCRAFT |
5′-4″ | 3/16″ | .187 | 15.6mm |
| 1/72 | AIRCRAFT, ARMOR BOATS | 6′-0″ | 11/64″ | .167 | 13.9mm |
| 1/76 | ARMOR | 6′-4″ | 5/32″ | .158 | 13.2mm |
| 1/87 | HO SCALE TRAINS ARMOR, TRUCKS |
7′-3″ | 9/64″ | .138 | 11.5mm |
| 1/96 | AIRCRAFT, 1/8″ SCALE SHIPS | 8′-0″ | 1/8″ | .125 | 10.4mm |
| 1/100 | AIRCRAFT | 8′-4″ | - | .120 | 10.0mm |
| 1/125 | AIRCRAFT | 10′-5″ | - | .096 | 8.0mm |
| 1/144 | AIRCRAFT | 12′-0″ | 1/12″ | .083 | 6.9mm |
| 1/160 | N SCALE TRAINS | 13′-4″ | - | .075 | 6.3mm |
| 1/192 | 1/16″ SCALE SHIPS | 16′-0″ | 1/16″ | .062 | 5.2mm |
| 1/200 | AIRCRAFT, SHIPS | 16′-8″ | - | .060 | 5.0mm |
| 1/220 | Z SCALE TRAINS | 18′-4″ | - | .054 | 4.5mm |
| 1/285 | WARGAME PIECES | 23′-9″ | - | .042 | 3.5mm |
| 1/350 | SHIPS | 29′-2″ | - | .034 | 2.9mm |
| 1/700 | SHIPS | 58′-4″ | - | .017 | 1.43mm |
| 1/720 | SHIPS | 60′-0″ | 1/60″ | .016 | 1.38mm |
| 1/1200 | WARGAME SHIPS | 100′-0″ | 1/100″ | .010 | 0.8mm |
| 1/2400 | WARGAME SHIPS | 200′-0″ | 1/200″ | .005 | 0.4mm |
| HOBBY SCALE | HOBBY DESCRIPTION | 1 ACTUAL INCH = |
1 SCALE FOOT = (FRACTION) |
1 SCALE FOOT = (DECIMAL) |
1 SCALE METER = (METRIC) |
HOBBY CONVERSION CHART
SIZE |
1:12 |
1:24 |
1:32 |
1:48 |
1:64 |
1:87 |
1:120 |
1:160 |
1:220 |
| 5/32″ | 5/64″ | 1/16″ | 3/64″ | 1/32″ | 1/64″ | 1/64″ | 1/64″ | 1/64″ | |
| 11/32″ | 11/64″ | 1/8″ | 5/64″ | 1/16″ | 3/64″ | 1/32″ | 1/64″ | 1/64″ | |
| 1/2″ | 1/4″ | 3/16″ | 1/8″ | 3/32″ | 1/16″ | 3/64″ | 1/32″ | 1/64″ | |
| 21/32″ | 21/64″ | 1/4″ | 11/64″ | 1/8″ | 3/32″ | 1/16″ | 3/64″ | 1/32″ | |
| 27/32″ | 27/64″ | 5/16″ | 13/64″ | 5/32″ | 7/64″ | 5/64″ | 1/16″ | 3/64″ | |
| 1″ | 1/2″ | 3/8″ | 1/4″ | 3/16″ | 9/64″ | 3/32″ | 5/64″ | 1/16″ | |
| 2″ | 1″ | 3/4″ | 1/2″ | 3/8″ | 9/32″ | 13/64″ | 5/32″ | 7/64″ | |
| 3″ | 1-1/2″ | 1-1/8″ | 3/4″ | 9/16″ | 13/32″ | 19/64″ | 15/64″ | 5/32″ | |
| 4″ | 2″ | 1-1/2″ | 1″ | 3/4″ | 35/64″ | 13/32″ | 19/64″ | 7/32″ | |
| 5″ | 2-1/2″ | 1-7/8″ | 1-1/4″ | 15/16″ | 11/16″ | 1/2″ | 3/8″ | 17/64″ | |
| 10″ | 5″ | 3-3/4″ | 2-1/2″ | 1-7/8″ | 1-3/8″ | 1″ | 3/4″ | 35/64″ |
SCALE EQUIVALENTS
| 1″ = 100′ | 1:1200 |
| 1″ = 75′ | 1:900 |
| 1″ = 60′ | 1:700 |
| 1″ = 50′ | 1:600 |
| 1″ = 40′ | 1:500 |
| 1″ = 30′ | 1:400 |
| 1″ = 20′ | 1:250 |
| 1″ = 10′ | 1:125 |
| 1/32″ = 1′ | 1:400 |
| 1/16″ = 1′ | 1:200 |
| 3/32″ = 1′ | 1:125 |
| 1/8″ = 1′ | 1:100 |
| 3/16″ = 1′ | 1:75 |
| 1/4″ = 1′ | 1:48 |
| 3/8″ = 1′ | 1:32 |
| 1/2″ = 1′ | 1:24 |
| 3/4″ = 1′ | 1:16 |
| 1″ = 1′ | 1:12 |
FRACTIONS TO DECIMALS
| DECIMAL | |||||||
| 1/64 | .0156 | 17/64 | .2656 | 33/64 | .5156 | 49/64 | .7656 |
| 1/32 | .0312 | 9/32 | .2812 | 17/32 | .5312 | 25/32 | .7812 |
| 3/64 | .0468 | 19/64 | .2968 | 35/64 | .5468 | 51/64 | .7968 |
| 1/16 | .0625 | 5/16 | .3125 | 9/16 | .5625 | 13/16 | .8125 |
| 5/64 | .0781 | 21/64 | .3281 | 37/64 | .5781 | 53/64 | .8281 |
| 3/32 | .0937 | 11/32 | .3437 | 19/32 | .5937 | 27/32 | .8437 |
| 7/64 | .1093 | 23/64 | .3593 | 39/64 | .6093 | 55/64 | .8593 |
| 1/8 | .125 | 3/8 | .375 | 5/8 | .625 | 7/8 | .875 |
| 9/64 | .1406 | 25/64 | .3906 | 41/64 | .6406 | 57/64 | .8906 |
| 5/32 | .1562 | 13/32 | .4062 | 21/32 | .6562 | 29/32 | .9062 |
| 11/64 | .1718 | 27/64 | .4218 | 43/64 | .6718 | 59/64 | .9218 |
| 3/16 | .1875 | 7/16 | .4375 | 11/16 | .6875 | 15/16 | .9375 |
| 13/64 | .2031 | 29/64 | .4531 | 45/64 | .7031 | 61/64 | .9531 |
| 7/32 | .2187 | 15/32 | .4687 | 23/32 | .7187 | 31/32 | .9687 |
| 15/64 | .2343 | 31/64 | .4843 | 47/64 | .7343 | 63/64 | .9843 |
| 1/4 | .250 | 1/2 | .500 | 3/4 | .750 | 1 | 1.00 |
FRACTIONS AND DECIMALS TO MILLIMETERS
| 1/64 | 0.4 | 17/64 | 6.7 | 33/64 | 13.1 | 49/64 | 19.4 | 1-1/8 | 28.6 |
| 1/32 | 0.8 | 9/32 | 7.1 | 17/32 | 13.5 | 25/32 | 19.8 | 1-1/4 | 31.8 |
| 3/64 | 1.2 | 19/64 | 7.5 | 35/64 | 13.9 | 51/64 | 20.2 | 1-1/2 | 38.1 |
| 1/16 | 1.6 | 5/16 | 7.9 | 9/16 | 14.3 | 13/16 | 20.6 | 1-3/4 | 44.5 |
| 5/64 | 2.0 | 21/64 | 8.3 | 37/64 | 14.7 | 53/64 | 21.0 | 2 | 50.8 |
| 3/32 | 2.4 | 11/32 | 8.7 | 19/32 | 15.1 | 27/32 | 21.4 | 3 | 76.2 |
| 7/64 | 2.8 | 23/64 | 9.1 | 39/64 | 15.5 | 55/64 | 21.8 | 4 | 101.6 |
| 1/8 | 3.2 | 3/8 | 9.5 | 5/8 | 15.9 | 7/8 | 22.2 | 5 | 127 |
| 9/64 | 3.6 | 25/64 | 9.9 | 41/64 | 16.3 | 57/64 | 22.6 | 6 | 152.4 |
| 5/32 | 4.0 | 13/32 | 10.3 | 21/32 | 16.7 | 29/32 | 23.0 | 10 | 254 |
| 11/64 | 4.4 | 27/64 | 10.7 | 43/64 | 17.1 | 59/64 | 23.4 | 12 | 304.8 |
| 3/16 | 4.8 | 7/16 | 11.1 | 11/16 | 17.5 | 15/16 | 23.8 | 15 | 381 |
| 13/64 | 5.2 | 29/64 | 11.5 | 45/64 | 17.9 | 61/64 | 24.2 | 24 | 609.6 |
| 7/32 | 5.6 | 15/32 | 11.9 | 23/32 | 18.3 | 31/32 | 24.6 | 30 | 762 |
| 15/64 | 6.0 | 31/64 | 12.3 | 47/64 | 18.7 | 63/64 | 25.0 | 36 | 914 |
| 1/4 | 6.4 | 1/2 | 12.7 | 3/4 | 19.1 | 1 | 25.4 | ||
| .010 | 0.3 | .110 | 2.8 | .310 | 7.9 | .520 | 13.2 | .920 | 23.4 |
| .015 | 0.4 | .120 | 3.0 | .320 | 8.1 | .540 | 13.7 | .940 | 23.9 |
| .020 | 0.5 | .130 | 3.3 | .330 | 8.4 | .560 | 14.2 | .960 | 24.4 |
| .025 | 0.6 | .140 | 3.6 | .340 | 8.6 | .580 | 14.7 | .980 | 24.9 |
| .030 | 0.8 | .150 | 3.8 | .350 | 8.9 | .600 | 15.2 | 1.00 | 25.4 |
| .035 | 0.9 | .160 | 4.1 | .360 | 9.1 | .620 | 15.7 | 1.25 | 31.8 |
| .040 | 1.0 | .170 | 4.3 | .370 | 9.4 | .640 | 16.3 | 1.50 | 38.1 |
| .045 | 1.1 | .180 | 4.6 | .380 | 9.7 | .660 | 16.8 | 1.75 | 44.5 |
| .050 | 1.3 | .190 | 4.8 | .390 | 9.9 | .680 | 17.3 | 2.00 | 50.8 |
| .055 | 1.4 | .200 | 5.1 | .400 | 10.2 | .700 | 17.8 | 2.25 | 57.2 |
| .060 | 1.5 | .210 | 5.3 | .410 | 10.4 | .720 | 18.3 | 2.50 | 63.5 |
| .065 | 1.7 | .220 | 5.6 | .420 | 10.7 | .740 | 18.8 | 2.75 | 69.9 |
| .070 | 1.8 | .230 | 5.8 | .430 | 10.9 | .760 | 19.3 | 3.00 | 76.2 |
| .075 | 1.9 | .240 | 6.1 | .440 | 11.2 | .780 | 19.8 | 3.50 | 88.9 |
| .080 | 2.0 | .250 | 6.4 | .450 | 11.4 | .800 | 20.3 | 4.00 | 101.6 |
| .085 | 2.2 | .260 | 6.6 | .460 | 11.7 | .820 | 20.8 | 4.50 | 114.3 |
| .090 | 2.3 | .270 | 6.9 | .470 | 11.9 | .840 | 21.3 | 5.00 | 127 |
| .095 | 2.4 | .280 | 7.1 | .480 | 12.2 | .860 | 21.8 | 5.50 | 139.7 |
| .100 | 2.5 | .290 | 7.4 | .490 | 12.4 | .880 | 22.4 | 6.00 | 152.4 |
| .300 | 7.6 | .500 | 12.7 | .900 | 22.9 | ||||