ProfessionalCalculator Suite
20+ specialized calculators for finance, health, engineering, and scientific calculations
Featured Calculator
Try our advanced scientific calculator with comprehensive mathematical functions
All Calculators
Explore our comprehensive collection of specialized calculators
Scientific
Specialized calculators for scientific
Financial
Specialized calculators for financial
Payment Calculator
Calculate loan payments, amortization schedules, and determine payoff periods for various loans.
Land Loan Calculator
Calculate payments and amortization for agricultural land, farm, and rural property loans.
Roth IRA Calculator
Estimate your Roth IRA savings and compare with a regular taxable account.
CD Calculator
Calculate the accumulated interest and final balance of a Certificate of Deposit (CD), including tax impact.
Coast FIRE Calculator
Calculate when you have enough invested to coast to retirement without additional contributions.
Health
Specialized calculators for health
ACFT Body Fat Calculator
Calculate U.S. Army body fat percentage and pass/fail status (2023.6.12 standard).
IVF Due Date Calculator
Estimate your pregnancy due date based on IVF embryo transfer details for 3-day or 5-day transfers.
Period Calculator
Predict your future menstrual cycles and ovulation periods.
Engineering
Specialized calculators for engineering
Weather
Specialized calculators for weather
General
Specialized calculators for general
Rounding Calculator
Round any number to your chosen precision and rounding mode instantly.
Time Card Calculator
Calculate work hours, overtime, and manage time cards efficiently.
Chronological Age Calculator
Calculate the time difference between two dates (e.g., age). Displays years, months, days, and total duration.
Era Calculator
Convert years between different calendar systems and historical eras (CE, BCE, Hijri, Hebrew, Buddhist).
AP Language Score Calculator
Calculate your estimated AP English Language exam score based on multiple-choice and essay performance.