Are my calories correct?

Any calculator - even fitness tracker - just gives estimates that are based on the statistically average calorie needs of similar people. Individuals differ from average.

Yes, there are several good science-based estimates for making those estimates, so different calculators may give slightly different results.

Here's the thing: Any of them should be considered just a starting estimate. We follow that starting estimate pretty closely for 4-6 weeks (whole menstrual cycle for those who have 'em). Then we compare our target weight loss rate to the average weekly weight loss rate over that whole period of multiple weeks. If we're close to the moderate, reasonable loss rate we aimed for, we're all set. If we're far off, we adjust the calorie goal and go forward with that as our new goal.

Most people are close to the calculator estimates. A few are noticeably higher or lower. A very rare few are surprisingly far off. I'm one of the weirdos: Most calculators, and my good brand/model fitness tracker (one that estimates well for others who've reported here) are off by several hundred calories daily for me, around a 25-30% discrepancy. Once I adjusted my calorie goal based on personal experience, my loss rate (and maintenance calorie needs) became quite predictable, in terms of that multi-week average.

If I were you, I wouldn't agonize over that 400 calorie difference. I'd pick one of the estimates, and start te trial period I suggested above. If you're shooting for 2 pounds a week, any calculator is giving you a goal 1000 calories per day below your current weight-maintenance calories. If you're off by 200 or so, you'll still lose weight, just a little faster or slower than expected. Worrying about that now has no answer. Starting to log and collect personal calorie-intake/weight-change data will deliver you the answer you're looking for.

Best wishes!