| 1. | Base Form (Infinitive): | Estimate |
| 2. | Simple Past: | Estimated |
| 3. | Past Participle: | Estimated |
| 4. | Present Participle: | Estimating |
| 5. | 3rd Person Singular: | Estimates |

Estimate past tense
| Estimated |
| Estimated is the past tense of the word estimate. |
Estimate past participle
| Estimated |
| Estimated is the past participle of the word estimate. |
Estimate verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Estimate | Estimated | Estimated | Estimating |
Conjugation of Estimate
| Simple / Indefinite Present Tense |
| I estimate her age at 25. |
| He/She/It estimates her age at 25. |
| You/We/They estimate her age at 25. |
| Simple Past Tense |
| I estimated her age at 25. |
| He/She/It estimated her age at 25. |
| You/We/They estimated her age at 25. |
| Simple Future Tense |
| I will/shall estimate her age at 25. |
| He/She/It will estimate her age at 25. |
| You/We/They will/shall estimate her age at 25. |
| Present Continuous Tense |
| I am estimating her age at 25. |
| He/She/It is estimating her age at 25. |
| You/We/They are estimating her age at 25. |
| Past Continuous Tense |
| I was estimating her age at 25. |
| He/She/It was estimating her age at 25. |
| You/We/They were estimating her age at 25. |
| Future Continuous Tense |
| I will be estimating her age at 25. |
| He/She/It will be estimating her age at 25. |
| You/We/They will be estimating her age at 25. |
| Present Perfect Tense |
| I have estimated her age at 25. |
| He/She/It has estimated her age at 25. |
| You/We/They have estimated her age at 25. |
| Past Perfect Tense |
| I had estimated her age at 25. |
| He/She/It had estimated her age at 25. |
| You/We/They had estimated her age at 25. |
| Future Perfect Tense |
| I will have estimated her age at 25. |
| He/She/It will have estimated her age at 25. |
| You/We/They will have estimated her age at 25. |
| Present Perfect Continuous Tense |
| I have been estimating her age at 25. |
| He/She/It has been estimating her age at 25. |
| You/We/They have been estimating her age at 25. |
| Past Perfect Continuous Tense |
| I had been estimating her age at 25. |
| He/She/It had been estimating her age at 25. |
| You/We/They had been estimating her age at 25. |
| Future Perfect Continuous Tense |
| I will have been estimating her age at 25. |
| He/She/It will have been estimating her age at 25. |
| You/We/They will have been estimating her age at 25. |