| atomic mass unit | 1 u | 2 u | 3 u | 4 u | 5 u | 6 u | 7 u | 8 u | 9 u | 10 u | 11 u | 12 u | 13 u | 14 u | 15 u | 16 u | 17 u | 18 u | 19 u | 20 u | 21 u | 22 u | 23 u | 24 u | 25 u | 26 u | 27 u | 28 u | 29 u | 30 u | 31 u | 32 u | 33 u | 34 u | 35 u | 36 u | 37 u | 38 u | 39 u | 40 u | 41 u | 42 u | 43 u | 44 u | 45 u | 46 u | 47 u | 48 u | 49 u | 50 u | 51 u | 52 u | 53 u | 54 u | 55 u | 56 u | 57 u | 58 u | 59 u | 60 u | 61 u | 62 u | 63 u | 64 u | 65 u | 66 u | 67 u | 68 u | 69 u | 70 u | 71 u | 72 u | 73 u | 74 u | 75 u | 76 u | 77 u | 78 u | 79 u | 80 u | 81 u | 82 u | 83 u | 84 u | 85 u | 86 u | 87 u | 88 u | 89 u | 90 u | 91 u | 92 u | 93 u | 94 u | 95 u | 96 u | 97 u | 98 u | 99 u | 100 u |
| tonne | 1.66053904 × 10-30 t | 3.32107808 × 10-30 t | 4.98161712 × 10-30 t | 6.64215616 × 10-30 t | 8.3026952 × 10-30 t | 9.96323424 × 10-30 t | 1.162377328 × 10-29 t | 1.328431232 × 10-29 t | 1.494485136 × 10-29 t | 1.66053904 × 10-29 t | 1.826592944 × 10-29 t | 1.992646848 × 10-29 t | 2.158700752 × 10-29 t | 2.324754656 × 10-29 t | 2.49080856 × 10-29 t | 2.656862464 × 10-29 t | 2.822916368 × 10-29 t | 2.988970272 × 10-29 t | 3.155024176 × 10-29 t | 3.32107808 × 10-29 t | 3.487131984 × 10-29 t | 3.653185888 × 10-29 t | 3.819239792 × 10-29 t | 3.985293696 × 10-29 t | 4.1513476 × 10-29 t | 4.317401504 × 10-29 t | 4.483455408 × 10-29 t | 4.649509312 × 10-29 t | 4.815563216 × 10-29 t | 4.98161712 × 10-29 t | 5.147671024 × 10-29 t | 5.313724928 × 10-29 t | 5.479778832 × 10-29 t | 5.645832736 × 10-29 t | 5.81188664 × 10-29 t | 5.977940544 × 10-29 t | 6.143994448 × 10-29 t | 6.310048352 × 10-29 t | 6.476102256 × 10-29 t | 6.64215616 × 10-29 t | 6.808210064 × 10-29 t | 6.974263968 × 10-29 t | 7.140317872 × 10-29 t | 7.306371776 × 10-29 t | 7.47242568 × 10-29 t | 7.638479584 × 10-29 t | 7.804533488 × 10-29 t | 7.970587392 × 10-29 t | 8.136641296 × 10-29 t | 8.3026952 × 10-29 t | 8.468749104 × 10-29 t | 8.634803008 × 10-29 t | 8.800856912 × 10-29 t | 8.966910816 × 10-29 t | 9.13296472 × 10-29 t | 9.299018624 × 10-29 t | 9.465072528 × 10-29 t | 9.631126432 × 10-29 t | 9.797180336 × 10-29 t | 9.96323424 × 10-29 t | 1.0129288144 × 10-28 t | 1.0295342048 × 10-28 t | 1.0461395952 × 10-28 t | 1.0627449856 × 10-28 t | 1.079350376 × 10-28 t | 1.0959557664 × 10-28 t | 1.1125611568 × 10-28 t | 1.1291665472 × 10-28 t | 1.1457719376 × 10-28 t | 1.162377328 × 10-28 t | 1.1789827184 × 10-28 t | 1.1955881088 × 10-28 t | 1.2121934992 × 10-28 t | 1.2287988896 × 10-28 t | 1.24540428 × 10-28 t | 1.2620096704 × 10-28 t | 1.2786150608 × 10-28 t | 1.2952204512 × 10-28 t | 1.3118258416 × 10-28 t | 1.328431232 × 10-28 t | 1.3450366224 × 10-28 t | 1.3616420128 × 10-28 t | 1.3782474032 × 10-28 t | 1.3948527936 × 10-28 t | 1.411458184 × 10-28 t | 1.4280635744 × 10-28 t | 1.4446689648 × 10-28 t | 1.4612743552 × 10-28 t | 1.4778797456 × 10-28 t | 1.494485136 × 10-28 t | 1.5110905264 × 10-28 t | 1.5276959168 × 10-28 t | 1.5443013072 × 10-28 t | 1.5609066976 × 10-28 t | 1.577512088 × 10-28 t | 1.5941174784 × 10-28 t | 1.6107228688 × 10-28 t | 1.6273282592 × 10-28 t | 1.6439336496 × 10-28 t | 1.66053904 × 10-28 t |
The unified atomic mass unit or dalton (symbol: u, or Da) is a standard unit of mass that quantifies mass on an atomic or molecular scale (atomic mass).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| atomic mass unit | u | Imperial/US |
| atomic mass unit | tonnes | atomic mass unit | tonnes |
|---|---|---|---|
| 1 | ≈ 1.66053904E-30 | 11 | ≈ 1.826592944E-29 |
| 2.5 | ≈ 4.1513476E-30 | 12.5 | ≈ 2.0756738E-29 |
| 4 | ≈ 6.64215616E-30 | 14 | ≈ 2.324754656E-29 |
| 5.5 | ≈ 9.13296472E-30 | 15.5 | ≈ 2.573835512E-29 |
| 7 | ≈ 1.162377328E-29 | 17 | ≈ 2.822916368E-29 |
| 8.5 | ≈ 1.411458184E-29 | 18.5 | ≈ 3.071997224E-29 |
| 10 | ≈ 1.66053904E-29 | 20 | ≈ 3.32107808E-29 |
The tonne (non-preferred SI derived unit; SI symbol: t), commonly referred to as the metric ton in the United States, is a non-SI metric unit of mass equal to 1,000 kilograms; or one megagram (Mg); it is equivalent to approximately 2,204.6 pounds, 1.10 short tons (US) or 0.984 long tons (imperial). Although not part of the SI per se, the tonne is "accepted for use with" SI units and prefixes by the International Committee for Weights and Measures, along with several other units like the bar, litre and day.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| tonne | t | ≡ 1000 kg | ≡ 1000 kg | Metric system SI |
| tonnes | atomic mass unit | tonnes | atomic mass unit |
|---|---|---|---|
| 1 | ≈ 6.0221408585492E+29 | 11 | ≈ 6.6243549444041E+30 |
| 2.5 | ≈ 1.5055352146373E+30 | 12.5 | ≈ 7.5276760731865E+30 |
| 4 | ≈ 2.4088563434197E+30 | 14 | ≈ 8.4309972019688E+30 |
| 5.5 | ≈ 3.312177472202E+30 | 15.5 | ≈ 9.3343183307512E+30 |
| 7 | ≈ 4.2154986009844E+30 | 17 | ≈ 1.0237639459534E+31 |
| 8.5 | ≈ 5.1188197297668E+30 | 18.5 | ≈ 1.1140960588316E+31 |
| 10 | ≈ 6.0221408585492E+30 | 20 | ≈ 1.2044281717098E+31 |
| atomic mass unit | tonnes |
|---|---|
| 1 | ≈ 1.66053904 × 10-30 |
| 6.0221408585492 × 1029 | ≈ 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 …) |