| 1. | Base Form (Infinitive): | Calculate |
| 2. | Simple Past: | Calculated |
| 3. | Past Participle: | Calculated |
| 4. | Present Participle: | Calculating |
| 5. | 3rd Person Singular: | Calculates |

Calculate past tense
| Calculated |
| Calculated is the past tense of the word calculate. |
Calculate past participle
| Calculated |
| Calculated is the past participle of the word calculate. |
Calculate verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Calculate | Calculated | Calculated | Calculating |
Conjugation of Calculate
| Simple / Indefinite Present Tense |
| I calculate their interest. |
| He/She/It calculates their interest. |
| You/We/They calculate their interest. |
| Simple Past Tense |
| I calculated their interest. |
| He/She/It calculated their interest. |
| You/We/They calculated their interest. |
| Simple Future Tense |
| I will/shall calculate their interest. |
| He/She/It will calculate their interest. |
| You/We/They will/shall calculate their interest. |
| Present Continuous Tense |
| I am calculating their interest. |
| He/She/It is calculating their interest. |
| You/We/They are calculating their interest. |
| Past Continuous Tense |
| I was calculating their interest. |
| He/She/It was calculating their interest. |
| You/We/They were calculating their interest. |
| Future Continuous Tense |
| I will be calculating their interest. |
| He/She/It will be calculating their interest. |
| You/We/They will be calculating their interest. |
| Present Perfect Tense |
| I have calculated their interest. |
| He/She/It has calculated their interest. |
| You/We/They have calculated their interest. |
| Past Perfect Tense |
| I had calculated their interest. |
| He/She/It had calculated their interest. |
| You/We/They had calculated their interest. |
| Future Perfect Tense |
| I will have calculated their interest. |
| He/She/It will have calculated their interest. |
| You/We/They will have calculated their interest. |
| Present Perfect Continuous Tense |
| I have been calculating their interest. |
| He/She/It has been calculating their interest. |
| You/We/They have been calculating their interest. |
| Past Perfect Continuous Tense |
| I had been calculating their interest. |
| He/She/It had been calculating their interest. |
| You/We/They had been calculating their interest. |
| Future Perfect Continuous Tense |
| I will have been calculating their interest. |
| He/She/It will have been calculating their interest. |
| You/We/They will have been calculating their interest. |