Last updated: November 3, 2026
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Accuracy of results
We test our calculators and check our content, but we do not guarantee that every result or explanation is free of error. Differences in rounding, in the formulas a teacher uses, or in a school’s rules can lead to different answers. For example, grade point scales and rounding rules for payroll hours vary between schools and employers. If you are unsure, follow the rules of your course, school or employer.
Practice tests are independent
The practice tests for exams such as the SAT, ACT, GED, TSI, ASVAB, TEAS and TABE are written by us. They are not official tests, they do not contain official questions, and they are not affiliated with or endorsed by the organizations that run those exams. A score on one of our tests does not predict your score on an official exam.
Practice dosage questions
Some TEAS practice questions use medicine dosage problems to practise arithmetic. They are for math practice only. Never use this site to calculate real medicine doses. Follow the instructions of a doctor, pharmacist or other qualified professional.
Calculators and timesheets
The minutes to decimal calculator and similar tools show a mathematical conversion. Your employer’s payroll system and local law decide how hours are rounded and paid.
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