5,819+ calculators for finance, health, construction and more
Free online loan calculator: monthly payment, total interest, and amortization schedule. Compare loan terms and rates. No signup, instant results.
Free mortgage calculator with down payment, term, and rate. See monthly payments, total interest paid, and amortization schedule. Compare 15-year vs 30-year mortgages.
Free BMI calculator: enter weight and height (metric or imperial) to get your Body Mass Index. WHO categories: underweight, normal, overweight, obese. With health interpretation.
Calculate the future value of your investments with compound interest. Add monthly contributions, see growth over 10/20/30 years. Daily, monthly, or annual compounding.
Calculate sales tax for US states (CA 7.25%, NY 8%, TX 8.25%, FL 6%) and VAT for EU countries. Add tax to price or extract tax from total. Free and instant.
Calculate Area of a Square instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Area of a Rectangle instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Triangle Area (base × height) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Triangle Area (Heron's formula) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Triangle Area (two sides & angle) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Equilateral triangle area instantly with the exact formula and a worked example. Free online calculator — no signup.
Calculate Isosceles triangle area instantly with the exact formula and a worked example. Free online calculator — no signup.
Calculate Area of a Parallelogram instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Area of a Rhombus instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Calculate Area of a Trapezoid instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.