| Computation Of Basic And Diluted Earnings Per Share |
| | | | | | | | | | | | | For the Three Months Ended March 31, 2013 | | Income (Numerator) | | Shares (Denominator) | | Per Share Amount | | (in thousands, except for per share amounts) | Basic Earnings: | | | | | | Income from continuing operations attributable to Boston Properties, Inc. | $ | 32,671 |
| | 151,646 |
| | $ | 0.22 |
| Discontinued operations attributable to Boston Properties, Inc. | 15,183 |
| | — |
| | 0.10 |
| Net income attributable to Boston Properties, Inc. common shareholders | $ | 47,854 |
| | 151,646 |
| | $ | 0.32 |
| Effect of Dilutive Securities: | | | | | | Stock Based Compensation and Exchangeable Senior Notes | — |
| | 306 |
| | (0.01 | ) | Diluted Earnings: | | | | | | Net income attributable to Boston Properties, Inc. common shareholders | $ | 47,854 |
| | 151,952 |
| | $ | 0.31 |
| | | | | | | | For the Three Months Ended March 31, 2012 | | Income (Numerator) | | Shares (Denominator) | | Per Share Amount | | (in thousands, except for per share amounts) | Basic Earnings: | | | | | | Income from continuing operations attributable to Boston Properties, Inc. | $ | 47,945 |
| | 148,343 |
| | $ | 0.33 |
| Discontinued operations attributable to Boston Properties, Inc. | 509 |
| | — |
| | — |
| Net income attributable to Boston Properties, Inc. common shareholders | $ | 48,454 |
| | 148,343 |
| | $ | 0.33 |
| Effect of Dilutive Securities: | | | | | | Stock Based Compensation and Exchangeable Senior Notes | — |
| | 403 |
| | — |
| Diluted Earnings: | | | | | | Net income attributable to Boston Properties, Inc. common shareholders | $ | 48,454 |
| | 148,746 |
| | $ | 0.33 |
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