Calculators

This calculator helps you substitute oil with butter and vice versa in recipes. It provides equivalent amounts needed for the substitution.

Calculates the optimal quantity of mashed potatoes needed per person based on meal type and occasion, and scales the total quantity for different group sizes.

Calculates the total surface area of various common 3D shapes.

Estimates a woman's risk of developing invasive breast cancer over the next 5 years and lifetime. This calculator uses the Gail Model, which considers factors such as age, race, personal history of breast biopsies, family history of breast cancer, and age at first menstrual period and childbirth.

Converts temperature values between Celsius, Fahrenheit, and Kelvin.

Calculates heart rate in beats per minute (BPM) based on the number of heartbeats counted over a specific time interval.

Calculates the estimated amount of buffering agent needed to adjust soil pH to a target level. This calculator uses a simplified approach and provides an estimate. Actual buffering agent requirements may vary based on soil type, organic matter content, and other factors. Always conduct a soil test and follow the buffering agent manufacturer's recommendations.

This calculator determines the amount of compost needed for gardening based on the area to be covered and the desired compost depth.

Predicts the possible colors of rabbit offspring based on the genetic color alleles of the parents.

This calculator converts a hamster's age in months to an equivalent age in human years.