Enter the starting and ending numbers, hit “Calculate,” and the tool instantly shows the percentage change—positive or negative. Example: 80 to 100 equals a 25 % rise (Khan Academy, https://www.khanacademy.org).
Enter two dates, choose whether to count the last day and/or skip weekends, then read the total—no math needed. Automated date tools cut scheduling errors by up to 30 % (PMI, 2021).
Enter two dates, decide if you want the last day counted, and pick calendar or business-only mode—the tool does the rest. JavaScript subtracts the time stamps, divides by 86 400 000 ms, then adjusts for weekends. Projects tracked this way finish on schedule 52 % more often (PMI, 2021).
The calculator shows what yesterday’s dollars are worth today by applying Consumer Price Index data—prices in 2022 are roughly 2 900 % higher than in 1913 (BLS CPI Tables, 2023).
Unlock the secrets of your menstrual cycle with our advanced Ovulation Calculator. Discover your fertile window, predict ovulation, and gain valuable insights into your reproductive health. Whether you're planning a family or tracking your cycle, this tool empowers you with personalized predictions. Learn how to take control of your fertility today!
The Car Loan Calculator shows your loan amount, monthly payment and lifetime interest in seconds. Adjust price, fees, term or rate to see instant changes. Average new-car APR hit 6.63 % in Q3 2023 (Experian, 2023).
Enter the first day of your last period, conception, or embryo-transfer date and your usual cycle length; the calculator adds 280 days (plus any cycle adjustment) to estimate birth, a method that brackets 90 % of deliveries within ±14 days (ACOG, 2017). It also shows gestational age, trimester and key fetal milestones.
The JavaScript Date Calculator lets you (1) count days between dates, (2) add or subtract days, weeks, months or years, and (3) show the weekday for any date—all in one click. It applies the Unix-epoch millisecond formula and adjusts for leap years, so results stay accurate; the Gregorian calendar has 97 leap years every 400-year cycle (ISO 8601:2019).
Generate 1–10 personalised usernames in seconds: enter interests, length, and style, then copy your favourite. 59 % of users say a distinctive handle makes them trust a profile more (Sprout Social, 2022 https://sproutsocial.com).
