
Regular verb: calculate - calculated - calculated
| Present | Present continuous | Preterite | Preterite continuous | 
| I calculate you calculate he calculates we calculate you calculate they calculate | I am calculating you are calculating he is calculating we are calculating you are calculating they are calculating | I calculated you calculated he calculated we calculated you calculated they calculated | I was calculating you were calculating he was calculating we were calculating you were calculating they were calculating | 
| Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous | 
| I have calculated you have calculated he has calculated we have calculated you have calculated they have calculated | I have been calculating you have been calculating he has been calculating we have been calculating you have been calculating they have been calculating | I had calculated you had calculated he had calculated we had calculated you had calculated they had calculated | I had been calculating you had been calculating he had been calculating we had been calculating you had been calculating they had been calculating | 
| Future | Future continuous | Future perfect | Future perfect continuous | 
| I will calculate you will calculate he will calculate we will calculate you will calculate they will calculate | I will be calculating you will be calculating he will be calculating we will be calculating you will be calculating they will be calculating | I will have calculated you will have calculated he will have calculated we will have calculated you will have calculated they will have calculated | I will have been calculating you will have been calculating he will have been calculating we will have been calculating you will have been calculating they will have been calculating | 
| Present | Present continuous | Past | Past continuous | 
| I would calculate you would calculate he would calculate we would calculate you would calculate they would calculate | I would be calculating you would be calculating he would be calculating we would be calculating you would be calculating they would be calculating | I would have calculated you would have calculated he would have calculated we would have calculated you would have calculated they would have calculated | I would have been calculating you would have been calculating he would have been calculating we would have been calculating you would have been calculating they would have been calculating | 
| Infinitive | Imperative | 
| Infinitive | Imperative | ||
| to calculate | calculate Let's calculate calculate | 
| Present | Past | ||
| calculating | calculated |