
Regular verb: calculate - calculated - calculated
Present | Present continuous | Preterite | Preterite continuous | 
| I calculate you calculate she calculates we calculate you calculate they calculate  | I'm calculating you're calculating she's calculating we're calculating you're calculating they're calculating  | I calculated you calculated she calculated we calculated you calculated they calculated  | I was calculating you were calculating she was calculating we were calculating you were calculating they were calculating  | 
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous | 
| I've calculated you've calculated she's calculated we've calculated you've calculated they've calculated  | I've been calculating you've been calculating she's been calculating we've been calculating you've been calculating they've been calculating  | I'd calculated you'd calculated she'd calculated we'd calculated you'd calculated they'd calculated  | I'd been calculating you'd been calculating she'd been calculating we'd been calculating you'd been calculating they'd been calculating  | 
Future | Future continuous | Future perfect | Future perfect continuous | 
| I'll calculate you'll calculate she'll calculate we'll calculate you'll calculate they'll calculate  | I'll be calculating you'll be calculating she'll be calculating we'll be calculating you'll be calculating they'll be calculating  | I'll have calculated you'll have calculated she'll have calculated we'll have calculated you'll have calculated they'll have calculated  | I'll have been calculating you'll have been calculating she'll have been calculating we'll have been calculating you'll have been calculating they'll have been calculating  | 
Present | Present continuous | Past | Past continuous | 
| I'd calculate you'd calculate she'd calculate we'd calculate you'd calculate they'd calculate  | I'd be calculating you'd be calculating she'd be calculating we'd be calculating you'd be calculating they'd be calculating  | I'd have calculated you'd have calculated she'd have calculated we'd have calculated you'd have calculated they'd have calculated  | I'd have been calculating you'd have been calculating she'd have been calculating we'd have been calculating you'd have been calculating they'd have been calculating  | 
Infinitive | Imperative | 
Infinitive | Imperative | ||
| to calculate | calculate Let's calculate calculate  | 
Present | Past | ||
| calculating | calculated |