quarter | 1 qr. | 2 qr. | 3 qr. | 4 qr. | 5 qr. | 6 qr. | 7 qr. | 8 qr. | 9 qr. | 10 qr. | 11 qr. | 12 qr. | 13 qr. | 14 qr. | 15 qr. | 16 qr. | 17 qr. | 18 qr. | 19 qr. | 20 qr. | 21 qr. | 22 qr. | 23 qr. | 24 qr. | 25 qr. | 26 qr. | 27 qr. | 28 qr. | 29 qr. | 30 qr. | 31 qr. | 32 qr. | 33 qr. | 34 qr. | 35 qr. | 36 qr. | 37 qr. | 38 qr. | 39 qr. | 40 qr. | 41 qr. | 42 qr. | 43 qr. | 44 qr. | 45 qr. | 46 qr. | 47 qr. | 48 qr. | 49 qr. | 50 qr. | 51 qr. | 52 qr. | 53 qr. | 54 qr. | 55 qr. | 56 qr. | 57 qr. | 58 qr. | 59 qr. | 60 qr. | 61 qr. | 62 qr. | 63 qr. | 64 qr. | 65 qr. | 66 qr. | 67 qr. | 68 qr. | 69 qr. | 70 qr. | 71 qr. | 72 qr. | 73 qr. | 74 qr. | 75 qr. | 76 qr. | 77 qr. | 78 qr. | 79 qr. | 80 qr. | 81 qr. | 82 qr. | 83 qr. | 84 qr. | 85 qr. | 86 qr. | 87 qr. | 88 qr. | 89 qr. | 90 qr. | 91 qr. | 92 qr. | 93 qr. | 94 qr. | 95 qr. | 96 qr. | 97 qr. | 98 qr. | 99 qr. | 100 qr. |
spat | 2.286 × 10-13 S | 4.572 × 10-13 S | 6.858 × 10-13 S | 9.144 × 10-13 S | 1.143 × 10-12 S | 1.3716 × 10-12 S | 1.6002 × 10-12 S | 1.8288 × 10-12 S | 2.0574 × 10-12 S | 2.286 × 10-12 S | 2.5146 × 10-12 S | 2.7432 × 10-12 S | 2.9718 × 10-12 S | 3.2004 × 10-12 S | 3.429 × 10-12 S | 3.6576 × 10-12 S | 3.8862 × 10-12 S | 4.1148 × 10-12 S | 4.3434 × 10-12 S | 4.572 × 10-12 S | 4.8006 × 10-12 S | 5.0292 × 10-12 S | 5.2578 × 10-12 S | 5.4864 × 10-12 S | 5.715 × 10-12 S | 5.9436 × 10-12 S | 6.1722 × 10-12 S | 6.4008 × 10-12 S | 6.6294 × 10-12 S | 6.858 × 10-12 S | 7.0866 × 10-12 S | 7.3152 × 10-12 S | 7.5438 × 10-12 S | 7.7724 × 10-12 S | 8.001 × 10-12 S | 8.2296 × 10-12 S | 8.4582 × 10-12 S | 8.6868 × 10-12 S | 8.9154 × 10-12 S | 9.144 × 10-12 S | 9.3726 × 10-12 S | 9.6012 × 10-12 S | 9.8298 × 10-12 S | 1.00584 × 10-11 S | 1.0287 × 10-11 S | 1.05156 × 10-11 S | 1.07442 × 10-11 S | 1.09728 × 10-11 S | 1.12014 × 10-11 S | 1.143 × 10-11 S | 1.16586 × 10-11 S | 1.18872 × 10-11 S | 1.21158 × 10-11 S | 1.23444 × 10-11 S | 1.2573 × 10-11 S | 1.28016 × 10-11 S | 1.30302 × 10-11 S | 1.32588 × 10-11 S | 1.34874 × 10-11 S | 1.3716 × 10-11 S | 1.39446 × 10-11 S | 1.41732 × 10-11 S | 1.44018 × 10-11 S | 1.46304 × 10-11 S | 1.4859 × 10-11 S | 1.50876 × 10-11 S | 1.53162 × 10-11 S | 1.55448 × 10-11 S | 1.57734 × 10-11 S | 1.6002 × 10-11 S | 1.62306 × 10-11 S | 1.64592 × 10-11 S | 1.66878 × 10-11 S | 1.69164 × 10-11 S | 1.7145 × 10-11 S | 1.73736 × 10-11 S | 1.76022 × 10-11 S | 1.78308 × 10-11 S | 1.80594 × 10-11 S | 1.8288 × 10-11 S | 1.85166 × 10-11 S | 1.87452 × 10-11 S | 1.89738 × 10-11 S | 1.92024 × 10-11 S | 1.9431 × 10-11 S | 1.96596 × 10-11 S | 1.98882 × 10-11 S | 2.01168 × 10-11 S | 2.03454 × 10-11 S | 2.0574 × 10-11 S | 2.08026 × 10-11 S | 2.10312 × 10-11 S | 2.12598 × 10-11 S | 2.14884 × 10-11 S | 2.1717 × 10-11 S | 2.19456 × 10-11 S | 2.21742 × 10-11 S | 2.24028 × 10-11 S | 2.26314 × 10-11 S | 2.286 × 10-11 S |
The quarter (lit. "one-fourth") is used as the name of several distinct English units based on ¼ sizes of some base unit.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
quarter | qr. | ≡ 1⁄4 yd | = 0.2286 m | Metric system SI |
quarters | spats | quarters | spats |
---|---|---|---|
1 | = 2.286E-13 | 4 | = 9.144E-13 |
1.5 | = 3.429E-13 | 4.5 | = 1.0287E-12 |
2 | = 4.572E-13 | 5 | = 1.143E-12 |
2.5 | = 5.715E-13 | 5.5 | = 1.2573E-12 |
3 | = 6.858E-13 | 6 | = 1.3716E-12 |
The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to 1000000000 kilometres (1 Tm or 1012 m). It is about 6.6846 astronomical units (AU), 1.057×10−4 light-years or3.240×10−5 parsecs.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
spat | S | ≡ 1×1012 m | ≡ 1×1012 m | Science - Astronomy (Length) |
spats | quarters | spats | quarters |
---|---|---|---|
1 | = 4374453193350.8 | 4 | = 17497812773403 |
1.5 | = 6561679790026.2 | 4.5 | = 19685039370079 |
2 | = 8748906386701.7 | 5 | = 21872265966754 |
2.5 | = 10936132983377 | 5.5 | = 24059492563430 |
3 | = 13123359580052 | 6 | = 26246719160105 |
quarters | spats |
---|---|
1 | = 2.286 × 10-13 |
4,374,453,193,350.8 | = 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 …) |