Use this free calculator to estimate your pregnancy due date. First Day of Last Menstrual Period (LMP): Calculate Due Date You may also like: DRI Calculator Sleep Calculator Convert Kilojoules to Calories Calorie Calculator Basal Energy Expenditure Calculator Related Categories Building & Construction Converters Educational Calculators Everyday Calculators Farming Calculators Financial Calculators Health & Fitness Calculators Numbers & Generators Randomization Traffic Fines Estimator