| Simple | Progressive | Perfect | Progressive |
| Present |
| I estimate |
| you estimate |
| he/she/it estimates |
| we estimate |
| you all estimate |
| they estimate |
|
| I am estimating |
| you are estimating |
| he/she/it is estimating |
| we are estimating |
| you all are estimating |
| they are estimating |
|
| I have estimated |
| you have estimated |
| he/she/it has estimated |
| we have estimated |
| you all have estimated |
| they have estimated |
|
| I have been estimating |
| you have been estimating |
| he/she/it has been estimating |
| we have been estimating |
| you all have been estimating |
| they have been estimating |
|
| Past |
| I estimated |
| you estimated |
| he/she/it estimated |
| we estimated |
| you all estimated |
| they estimated |
|
| I was estimating |
| you were estimating |
| he/she/it was estimating |
| we were estimating |
| you all were estimating |
| they were estimating |
|
| I had estimated |
| you had estimated |
| he/she/it had estimated |
| we had estimated |
| you all had estimated |
| they had estimated |
|
| I had been estimating |
| you had been estimating |
| he/she/it had been estimating |
| we had been estimating |
| you all had been estimating |
| they had been estimating |
|
| Future |
| I will estimate |
| you will estimate |
| he/she/it will estimate |
| we will estimate |
| you all will estimate |
| they will estimate |
|
| I will be estimating |
| you will be estimating |
| he/she/it will be estimating |
| we are estimating |
| you all will be estimating |
| they will be estimating |
|
| I will have estimated |
| you will have estimated |
| he/she/it will have estimated |
| we will have estimated |
| you all will have estimated |
| they will have estimated |
|
| I will have been estimating |
| you will have been estimating |
| he/she/it will have been estimating |
| we will have been estimating |
| you all will have been estimating |
| they will have been estimating |
|
