ジャパンナレッジ
換算表
[１] 長さの換算表（linear measure）
1 inch (in.) = 0.0833ft. = 2.540cm
1 foot (ft.) = 12in. = 0.3048m
1 yard (yd.) = 3ft. = 0.9144m
1 rod (rd.) = 5 1/2yd. = 5.029m
1 chain (ch.) = 22yd. = 20.12m
1 furlong (fur.) = 10ch. = 0.2012km
1 mile (mi., mil) = 8fur. = 1,760yd. = 1.609km
1 foot (ft.) = 12in. = 0.3048m
1 yard (yd.) = 3ft. = 0.9144m
1 rod (rd.) = 5 1/2yd. = 5.029m
1 chain (ch.) = 22yd. = 20.12m
1 furlong (fur.) = 10ch. = 0.2012km
1 mile (mi., mil) = 8fur. = 1,760yd. = 1.609km
1 millimeter (mm) = 0.039in.
1 centimeter (cm) = 10mm = 0.3937in.
1 decimeter (dm) = 10cm = 3.937in.
1 meter (m) = 100cm = 39.37in.
1 decameter (dam) = 10m = 10.94yd.
1 hectometer (hm) = 100m = 109.4yd.
1 kilometer (km) = 1,000m = 0.6214mil.
1 centimeter (cm) = 10mm = 0.3937in.
1 decimeter (dm) = 10cm = 3.937in.
1 meter (m) = 100cm = 39.37in.
1 decameter (dam) = 10m = 10.94yd.
1 hectometer (hm) = 100m = 109.4yd.
1 kilometer (km) = 1,000m = 0.6214mil.
[２] 面積の換算表（square measure）
1 square inch (sq. in.) = 6.4516cm2
1 square foot (sq. ft.) = 144in2 = 0.0929m2
1 square yard (sq. yd.) = 9.105ft2 = 0.8361m2
1 square rod (sq. rd.) = 30 1/4yd2 = 25.293m2
1 square chain (sq. ch.) = 16rod2 = 404.67m2
1 acre (A) = 10ch2 ( = 4,840yd2) = 4,046.7m2
1 square mile (sq. mil.) = 640A = 2.5900km2
1 square foot (sq. ft.) = 144in2 = 0.0929m2
1 square yard (sq. yd.) = 9.105ft2 = 0.8361m2
1 square rod (sq. rd.) = 30 1/4yd2 = 25.293m2
1 square chain (sq. ch.) = 16rod2 = 404.67m2
1 acre (A) = 10ch2 ( = 4,840yd2) = 4,046.7m2
1 square mile (sq. mil.) = 640A = 2.5900km2
1 square millimeter (mm2) = 0.00155in2
1 square centimeter (cm2) = 100mm2 = 0.1550in2
1 square meter (m2) = 10,000cm2 = 1.196yd2 ( = 0.3025坪)
1 are (a) = 100m2 = 119.6yd2 ( = 30.25坪)
1 hectare (ha) = 10,000m2 ( = 100a) = 2.471A
1 square kilometer (km2) = 100ha = 247.114A
1 square centimeter (cm2) = 100mm2 = 0.1550in2
1 square meter (m2) = 10,000cm2 = 1.196yd2 ( = 0.3025坪)
1 are (a) = 100m2 = 119.6yd2 ( = 30.25坪)
1 hectare (ha) = 10,000m2 ( = 100a) = 2.471A
1 square kilometer (km2) = 100ha = 247.114A
[３] 体積の換算表（cubic measure）
1 cubic inch (cu. in.) = 16.387cm3
1 cubic foot (cu. ft.) =1,728in3 = 0.02832m3 ( = 28.32dm3)
1 cubic yard (cu. yd.) = 27ft3 = 0.7646m3
1 cubic foot (cu. ft.) =1,728in3 = 0.02832m3 ( = 28.32dm3)
1 cubic yard (cu. yd.) = 27ft3 = 0.7646m3
1 cord (cd.) = 128ft3 = 3.6246m3
1 cubic centimeter (cm3) = 0.06102in3
1 cubic decimeter (dm3) = 1,000cm3 = 0.03532ft3
1 cubic meter (m3) = 1,000dm3 = 1.308yd3
1 cubic centimeter (cm3) = 0.06102in3
1 cubic decimeter (dm3) = 1,000cm3 = 0.03532ft3
1 cubic meter (m3) = 1,000dm3 = 1.308yd3
[４] 重さの換算表（avoirdupois）
1 grain (gr.) = 64.8mg
1 dram (dr. avdp.) = 27.3438gr. = 1.7717g
1 ounce (oz.) = 16dr. = 28.3495g
1 pound (lb.) = 16oz. = 0.4536kg
1 stone (st.) = 14lb. = 6.350kg
1 quarter (qr.) = 2st. = 12.70kg
1 hundredweight (cwt.)
1 (long) ton = 20cwt. = 1.016tonne
1 dram (dr. avdp.) = 27.3438gr. = 1.7717g
1 ounce (oz.) = 16dr. = 28.3495g
1 pound (lb.) = 16oz. = 0.4536kg
1 stone (st.) = 14lb. = 6.350kg
1 quarter (qr.) = 2st. = 12.70kg
1 hundredweight (cwt.)
= ((米)) 100lb. ( = 45.36kg)
= ((英)) 112lb. ( = 50.86kg)
1 (short) ton (t.) = 2,000lb. = 0.9072tonne= ((英)) 112lb. ( = 50.86kg)
1 (long) ton = 20cwt. = 1.016tonne
1 milligram (mg) = 0.015gr.
1 centigram (g) = 10mg = 0.154gr.
1 decigram (dg) = 100mg = 1.543gr.
1 gram (g) = 10dg = 15.43gr. ( = 0.035 oz.)
1 decagram (dag) = 10g = 0.353oz.
1 hectogram (hg) = 10dag = 3.527oz.
1 kilogram (kg) = 10hg = 2.2046lb.
1 tonne (M.T.) = 1,000kg = 1.1023 (shot) ton ( = 2,204.62 lb.) = 0.984 (long) ton
1 centigram (g) = 10mg = 0.154gr.
1 decigram (dg) = 100mg = 1.543gr.
1 gram (g) = 10dg = 15.43gr. ( = 0.035 oz.)
1 decagram (dag) = 10g = 0.353oz.
1 hectogram (hg) = 10dag = 3.527oz.
1 kilogram (kg) = 10hg = 2.2046lb.
1 tonne (M.T.) = 1,000kg = 1.1023 (shot) ton ( = 2,204.62 lb.) = 0.984 (long) ton
[５] 容積の換算表（capacity measure）
1 fluid ounce (fluid oz.)
= ((米)) 29.57cm3
= ((英)) 28.41cm3
1 gill (gi.)
= ((英)) 28.41cm3
= ((米)) 4fluid oz. ( = 0.118dm3)
= ((英)) 5fluid oz. ( = 0.142dm3)
1 pint (pt.) = 4gi.
= ((英)) 5fluid oz. ( = 0.142dm3)
= ((米)) 0.4732dm3
= ((英)) 0.5683dm3
1 quart (qt.) = 2pt.
= ((英)) 0.5683dm3
= ((米)) 0.9464dm3
= ((英)) 1.137dm3
= ((英)) 1.137dm3
1 gallon (gal.) = 4qt.
1 centimeter (cl) = 10ml = 0.0176pt. = 0.338fluid oz.
1 deciliter (dl) = 10cl = 0.176pt.
1 liter (l) = 10dl
1 hectoliter (hl) = 10dal = 22.0 英gal.
1 kiloliter (kl) = 10hl = 220.0 英gal.
= ((米)) 231in3 ( = 3.785dm3)
= ((英)) 277.42in3 ( = 4.546dm3)
1 bushel (bu.) = 8gal.
= ((英)) 277.42in3 ( = 4.546dm3)
= ((米)) 35.24dm3
= ((英)) 36.37dm3
1 milliliter (ml) = 0.00176pt.= ((英)) 36.37dm3
1 centimeter (cl) = 10ml = 0.0176pt. = 0.338fluid oz.
1 deciliter (dl) = 10cl = 0.176pt.
1 liter (l) = 10dl
= 0.264 米gal.
= 0.220 英gal.
1 decaliter (dal) = 10l = 2.20 英gal.= 0.220 英gal.
1 hectoliter (hl) = 10dal = 22.0 英gal.
1 kiloliter (kl) = 10hl = 220.0 英gal.
[６] 数字を示す接頭辞
tera-(T) = 1012
giga-(G) = 109
mega-(M) = 106
kilo-(k) = 103
hecto-(h) = 102
deca-(da) = 10
deci-(d) = 10-1
centi-(c) = 10-2
milli-(m) = 10-3
micro-(μ) = 10-6
nano-(n) = 10-9
pico-(p) = 10-12
femto-(f) = 10-15
atto-(a) = 10-18
giga-(G) = 109
mega-(M) = 106
kilo-(k) = 103
hecto-(h) = 102
deca-(da) = 10
deci-(d) = 10-1
centi-(c) = 10-2
milli-(m) = 10-3
micro-(μ) = 10-6
nano-(n) = 10-9
pico-(p) = 10-12
femto-(f) = 10-15
atto-(a) = 10-18
[７] 温度計
