inch | 1 in | 2 in | 3 in | 4 in | 5 in | 6 in | 7 in | 8 in | 9 in | 10 in | 11 in | 12 in | 13 in | 14 in | 15 in | 16 in | 17 in | 18 in | 19 in | 20 in | 21 in | 22 in | 23 in | 24 in | 25 in | 26 in | 27 in | 28 in | 29 in | 30 in | 31 in | 32 in | 33 in | 34 in | 35 in | 36 in | 37 in | 38 in | 39 in | 40 in | 41 in | 42 in | 43 in | 44 in | 45 in | 46 in | 47 in | 48 in | 49 in | 50 in | 51 in | 52 in | 53 in | 54 in | 55 in | 56 in | 57 in | 58 in | 59 in | 60 in | 61 in | 62 in | 63 in | 64 in | 65 in | 66 in | 67 in | 68 in | 69 in | 70 in | 71 in | 72 in | 73 in | 74 in | 75 in | 76 in | 77 in | 78 in | 79 in | 80 in | 81 in | 82 in | 83 in | 84 in | 85 in | 86 in | 87 in | 88 in | 89 in | 90 in | 91 in | 92 in | 93 in | 94 in | 95 in | 96 in | 97 in | 98 in | 99 in | 100 in |
attometer | 2.54 × 1016 am | 5.08 × 1016 am | 7.62 × 1016 am | 1.016 × 1017 am | 1.27 × 1017 am | 1.524 × 1017 am | 1.778 × 1017 am | 2.032 × 1017 am | 2.286 × 1017 am | 2.54 × 1017 am | 2.794 × 1017 am | 3.048 × 1017 am | 3.302 × 1017 am | 3.556 × 1017 am | 3.81 × 1017 am | 4.064 × 1017 am | 4.318 × 1017 am | 4.572 × 1017 am | 4.826 × 1017 am | 5.08 × 1017 am | 5.334 × 1017 am | 5.588 × 1017 am | 5.842 × 1017 am | 6.096 × 1017 am | 6.35 × 1017 am | 6.604 × 1017 am | 6.858 × 1017 am | 7.112 × 1017 am | 7.366 × 1017 am | 7.62 × 1017 am | 7.874 × 1017 am | 8.128 × 1017 am | 8.382 × 1017 am | 8.636 × 1017 am | 8.89 × 1017 am | 9.144 × 1017 am | 9.398 × 1017 am | 9.652 × 1017 am | 9.906 × 1017 am | 1.016 × 1018 am | 1.0414 × 1018 am | 1.0668 × 1018 am | 1.0922 × 1018 am | 1.1176 × 1018 am | 1.143 × 1018 am | 1.1684 × 1018 am | 1.1938 × 1018 am | 1.2192 × 1018 am | 1.2446 × 1018 am | 1.27 × 1018 am | 1.2954 × 1018 am | 1.3208 × 1018 am | 1.3462 × 1018 am | 1.3716 × 1018 am | 1.397 × 1018 am | 1.4224 × 1018 am | 1.4478 × 1018 am | 1.4732 × 1018 am | 1.4986 × 1018 am | 1.524 × 1018 am | 1.5494 × 1018 am | 1.5748 × 1018 am | 1.6002 × 1018 am | 1.6256 × 1018 am | 1.651 × 1018 am | 1.6764 × 1018 am | 1.7018 × 1018 am | 1.7272 × 1018 am | 1.7526 × 1018 am | 1.778 × 1018 am | 1.8034 × 1018 am | 1.8288 × 1018 am | 1.8542 × 1018 am | 1.8796 × 1018 am | 1.905 × 1018 am | 1.9304 × 1018 am | 1.9558 × 1018 am | 1.9812 × 1018 am | 2.0066 × 1018 am | 2.032 × 1018 am | 2.0574 × 1018 am | 2.0828 × 1018 am | 2.1082 × 1018 am | 2.1336 × 1018 am | 2.159 × 1018 am | 2.1844 × 1018 am | 2.2098 × 1018 am | 2.2352 × 1018 am | 2.2606 × 1018 am | 2.286 × 1018 am | 2.3114 × 1018 am | 2.3368 × 1018 am | 2.3622 × 1018 am | 2.3876 × 1018 am | 2.413 × 1018 am | 2.4384 × 1018 am | 2.4638 × 1018 am | 2.4892 × 1018 am | 2.5146 × 1018 am | 2.54 × 1018 am |
The inch (abbreviation: in or ″) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia ("twelfth"), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
inch | in | ≡ 2.54 cm ≡ 1⁄36 yd ≡ 1⁄12 ft | ≡ 0.0254 m | Imperial/US |
inches | attometers | inches | attometers |
---|---|---|---|
1 | ≡ 2.54E+16 | 4 | ≡ 1.016E+17 |
1.5 | ≡ 3.81E+16 | 4.5 | ≡ 1.143E+17 |
2 | ≡ 5.08E+16 | 5 | ≡ 1.27E+17 |
2.5 | ≡ 6.35E+16 | 5.5 | ≡ 1.397E+17 |
3 | ≡ 7.62E+16 | 6 | ≡ 1.524E+17 |
An attometer is a unit of length, a combination of the metric prefix atto (symbol a) and the SI unit of length meter (symbol m), equal to 10−18 meter or 1.0E-18 meter and its symbol is am. Plural name is attometers.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
attometer | am | ≡ 1×10-18 m | ≡ 1×10-18 m | Metric system SI |
attometers | inches | attometers | inches |
---|---|---|---|
1 | ≡ 3.9370078740157E-17 | 4 | ≡ 1.5748031496063E-16 |
1.5 | ≡ 5.9055118110236E-17 | 4.5 | ≡ 1.7716535433071E-16 |
2 | ≡ 7.8740157480315E-17 | 5 | ≡ 1.9685039370079E-16 |
2.5 | ≡ 9.8425196850394E-17 | 5.5 | ≡ 2.1653543307087E-16 |
3 | ≡ 1.1811023622047E-16 | 6 | ≡ 2.3622047244094E-16 |
inches | attometers |
---|---|
1 | ≡ 2.54 × 1016 |
3.9370078740157 × 10-17 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |