API Degrees is the relationship of the weight of a petroleum product in relation to water.
If it is lighter than water and floats on water, the API degrees are over 10. Those that are below 10 are heavier than water and sink to the bottom.
API Degrees and Specific Gravity
API Degrees is the relationship of the weight of a petroleum product in relation to water.
If it is lighter than water and floats on water, the API degrees are over 10. Those that are below 10 are heavier than water and sink to the bottom.
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All of the values are determined at 60 °F (15.6 °C)
| Relationship between API degrees and specific gravity | |||
| Degrees API | Specific Gravity | Kilos per Liter |
Lbs per Gallon |
| 1 | 1.0679 | 1.0658 | 8.8964 |
| 1.5 | 1.0639 | 1.0618 | 8.8630 |
| 2 | 1.0599 | 1.0578 | 8.8298 |
| 2.5 | 1.0560 | 1.0539 | 8.7968 |
| 3 | 1.0520 | 1.0499 | 8.7641 |
| 3.5 | 1.0481 | 1.0461 | 8.7317 |
| 4 | 1.0443 | 1.0422 | 8.6994 |
| 4.5 | 1.0404 | 1.0384 | 8.6674 |
| 5 | 1.0366 | 1.0346 | 8.6357 |
| 5.5 | 1.0328 | 1.0308 | 8.6042 |
| 6 | 1.0291 | 1.0270 | 8.5729 |
| 6.5 | 1.0254 | 1.0233 | 8.5418 |
| 7 | 1.0217 | 1.0196 | 8.5110 |
| 7.5 | 1.0180 | 1.0159 | 8.4804 |
| 8 | 1.0143 | 1.0123 | 8.4500 |
| 8.5 | 1.0107 | 1.0087 | 8.4198 |
| 9 | 1.0071 | 1.0051 | 8.3898 |
| 9.5 | 1.0035 | 1.0015 | 8.3601 |
| 10 | 1.0000 | 0.9980 | 8.3306 |
| 10.5 | 0.9965 | 0.9945 | 8.3012 |
| 11 | 0.9930 | 0.9910 | 8.2721 |
| 11.5 | 0.9895 | 0.9875 | 8.2432 |
| 12 | 0.9861 | 0.9841 | 8.2144 |
| 12.5 | 0.9826 | 0.9807 | 8.1859 |
| 13 | 0.9792 | 0.9773 | 8.1576 |
| 13.5 | 0.9759 | 0.9739 | 8.1295 |
| 14 | 0.9725 | 0.9706 | 8.1015 |
| 14.5 | 0.9692 | 0.9672 | 8.0738 |
| 15 | 0.9659 | 0.9639 | 8.0462 |
| 15.5 | 0.9626 | 0.9607 | 8.0189 |
| 16 | 0.9593 | 0.9574 | 7.9917 |
| 16.5 | 0.9561 | 0.9542 | 7.9647 |
| 17 | 0.9529 | 0.9510 | 7.9379 |
| 17.5 | 0.9497 | 0.9478 | 7.9112 |
| 18 | 0.9465 | 0.9446 | 7.8848 |
| 18.5 | 0.9433 | 0.9414 | 7.8585 |
| 19 | 0.9402 | 0.9383 | 7.8324 |
| 19.5 | 0.9371 | 0.9352 | 7.8064 |
| 20 | 0.9340 | 0.9321 | 7.7807 |
| 20.5 | 0.9309 | 0.9291 | 7.7551 |
| 21 | 0.9279 | 0.9260 | 7.7297 |
| 21.5 | 0.9248 | 0.9230 | 7.7044 |
| 22 | 0.9218 | 0.9200 | 7.6793 |
| 22.5 | 0.9188 | 0.9170 | 7.6544 |
| 23 | 0.9159 | 0.9140 | 7.6296 |
| 23.5 | 0.9129 | 0.9111 | 7.6050 |
| 24 | 0.9100 | 0.9081 | 7.5805 |
| 24.5 | 0.9071 | 0.9052 | 7.5562 |
| 25 | 0.9042 | 0.9023 | 7.5321 |
| 25.5 | 0.9013 | 0.8995 | 7.5081 |
| 26 | 0.8984 | 0.8966 | 7.4843 |
| 26.5 | 0.8956 | 0.8938 | 7.4606 |
| 27 | 0.8927 | 0.8910 | 7.4371 |
| 27.5 | 0.8899 | 0.8882 | 7.4137 |
| 28 | 0.8871 | 0.8854 | 7.3904 |
| 28.5 | 0.8844 | 0.8826 | 7.3673 |
| 29 | 0.8816 | 0.8799 | 7.3444 |
| 29.5 | 0.8789 | 0.8771 | 7.3216 |
| 30 | 0.8762 | 0.8744 | 7.2989 |
| 30.5 | 0.8735 | 0.8717 | 7.2764 |
| 31 | 0.8708 | 0.8690 | 7.2540 |
| 31.5 | 0.8681 | 0.8664 | 7.2317 |
| 32 | 0.8654 | 0.8637 | 7.2096 |
| 32.5 | 0.8628 | 0.8611 | 7.1876 |
| 33 | 0.8602 | 0.8585 | 7.1658 |
| 33.5 | 0.8576 | 0.8559 | 7.1441 |
| 34 | 0.8550 | 0.8533 | 7.1225 |
| 34.5 | 0.8524 | 0.8507 | 7.1010 |
| 35 | 0.8498 | 0.8482 | 7.0797 |
| 35.5 | 0.8473 | 0.8456 | 7.0585 |
| 36 | 0.8448 | 0.8431 | 7.0375 |
| 36.5 | 0.8423 | 0.8406 | 7.0165 |
| 37 | 0.8398 | 0.8381 | 6.9957 |
| 37.5 | 0.8373 | 0.8356 | 6.9750 |
| 38 | 0.8348 | 0.8331 | 6.9544 |
| 38.5 | 0.8324 | 0.8307 | 6.9340 |
| 39 | 0.8299 | 0.8283 | 6.9136 |
| 39.5 | 0.8275 | 0.8258 | 6.8934 |
| 40 | 0.8251 | 0.8234 | 6.8733 |
| 40.5 | 0.8227 | 0.8210 | 6.8533 |
| 41 | 0.8203 | 0.8186 | 6.8335 |
| 41.5 | 0.8179 | 0.8163 | 6.8137 |
| 42 | 0.8156 | 0.8139 | 6.7941 |
| 42.5 | 0.8132 | 0.8116 | 6.7746 |
| 43 | 0.8109 | 0.8093 | 6.7551 |
| 43.5 | 0.8086 | 0.8070 | 6.7358 |
| 44 | 0.8063 | 0.8047 | 6.7167 |
| 44.5 | 0.8040 | 0.8024 | 6.6976 |
| 45 | 0.8017 | 0.8001 | 6.6786 |
| 45.5 | 0.7994 | 0.7978 | 6.6597 |
| 46 | 0.7972 | 0.7956 | 6.6410 |
| 46.5 | 0.7949 | 0.7934 | 6.6223 |
| 47 | 0.7927 | 0.7911 | 6.6038 |
| 47.5 | 0.7905 | 0.7889 | 6.5853 |
| 48 | 0.7883 | 0.7867 | 6.5670 |
| 48.5 | 0.7861 | 0.7845 | 6.5487 |
| 49 | 0.7839 | 0.7824 | 6.5306 |
| 49.5 | 0.7818 | 0.7802 | 6.5126 |
| 50 | 0.7796 | 0.7781 | 6.4946 |
| 50.5 | 0.7775 | 0.7759 | 6.4768 |
| 51 | 0.7753 | 0.7738 | 6.4590 |
| 51.5 | 0.7732 | 0.7717 | 6.4414 |
| 52 | 0.7711 | 0.7696 | 6.4238 |
| 52.5 | 0.7690 | 0.7675 | 6.4064 |
| 53 | 0.7669 | 0.7654 | 6.3890 |
| 53.5 | 0.7649 | 0.7633 | 6.3717 |
| 54 | 0.7628 | 0.7613 | 6.3546 |
| 54.5 | 0.7608 | 0.7592 | 6.3375 |
| 55 | 0.7587 | 0.7572 | 6.3205 |
| 55.5 | 0.7567 | 0.7552 | 6.3036 |
| 56 | 0.7547 | 0.7532 | 6.2868 |
| 56.5 | 0.7527 | 0.7512 | 6.2701 |
| 57 | 0.7507 | 0.7492 | 6.2534 |
| 57.5 | 0.7487 | 0.7472 | 6.2369 |
| 58 | 0.7467 | 0.7452 | 6.2204 |
| 58.5 | 0.7447 | 0.7432 | 6.2041 |
| 59 | 0.7428 | 0.7413 | 6.1878 |
| 59.5 | 0.7408 | 0.7394 | 6.1716 |
| 60 | 0.7389 | 0.7374 | 6.1555 |
| 60.5 | 0.7370 | 0.7355 | 6.1394 |
| 61 | 0.7351 | 0.7336 | 6.1235 |
| 61.5 | 0.7332 | 0.7317 | 6.1076 |
| 62 | 0.7313 | 0.7298 | 6.0918 |
| 62.5 | 0.7294 | 0.7279 | 6.0761 |
| 63 | 0.7275 | 0.7261 | 6.0605 |
| 63.5 | 0.7256 | 0.7242 | 6.0450 |
| 64 | 0.7238 | 0.7223 | 6.0295 |
| 64.5 | 0.7219 | 0.7205 | 6.0141 |
| 65 | 0.7201 | 0.7187 | 5.9988 |
| 65.5 | 0.7183 | 0.7168 | 5.9836 |
| 66 | 0.7165 | 0.7150 | 5.9685 |
| 66.5 | 0.7146 | 0.7132 | 5.9534 |
| 67 | 0.7128 | 0.7114 | 5.9384 |
| 67.5 | 0.7111 | 0.7096 | 5.9235 |
| 68 | 0.7093 | 0.7079 | 5.9086 |
| 68.5 | 0.7075 | 0.7061 | 5.8939 |
| 69 | 0.7057 | 0.7043 | 5.8792 |
| 69.5 | 0.7040 | 0.7026 | 5.8645 |
| 70 | 0.7022 | 0.7008 | 5.8500 |
| 70.5 | 0.7005 | 0.6991 | 5.8355 |
| 71 | 0.6988 | 0.6974 | 5.8211 |
| 71.5 | 0.6970 | 0.6957 | 5.8068 |
| 72 | 0.6953 | 0.6939 | 5.7925 |
| 72.5 | 0.6936 | 0.6922 | 5.7783 |
| 73 | 0.6919 | 0.6905 | 5.7642 |
| 73.5 | 0.6902 | 0.6889 | 5.7501 |
| 74 | 0.6886 | 0.6872 | 5.7361 |
| 74.5 | 0.6869 | 0.6855 | 5.7222 |
| 75 | 0.6852 | 0.6839 | 5.7083 |
| Widman International SRL - Bolivia | |||