# Everyday Calculator > Everyday Calculator is a comprehensive suite of professional-grade, free online calculators spanning finance, health, and education. Our tools are built for speed, accuracy, and ease of use. ## Main Tools - [2026 Tax Estimator](https://everydaycalculator.net/finance/tax-calculator-2026) - Estimate your federal income tax liability and brackets for the 2026 tax year. - [Mortgage Calculator](https://everydaycalculator.net/finance/mortgage-calculator) - Calculate monthly mortgage payments, including principal, interest, taxes, and insurance. - [College GPA Calculator](https://everydaycalculator.net/education/gpa-calculator) - Calculate your semester and cumulative college GPA based on grades and credits. - [401(k) Retirement Calculator](https://everydaycalculator.net/finance/401k-calculator) - Project your 401(k) savings balance and retirement income based on contributions and growth. ## See Also ### Finance - [OBBBA 2026 Tax Estimator](https://everydaycalculator.net/financial/obbba-tax-estimator-2026) - Estimate 2026 federal income tax liability. - [Salary Calculator](https://everydaycalculator.net/financial/salary-calculator) - Convert salary to hourly, weekly, bi-weekly, semi-monthly, or monthly wage rates. - [Hourly Wage Calculator](https://everydaycalculator.net/financial/hourly-wage-calculator) - Convert hourly wage to daily, weekly, monthly, or annual salary equivalents. - [Income Tax Calculator](https://everydaycalculator.net/financial/income-tax-calculator) - Calculate federal, state, and local income taxes based on filing status. - [Inflation Calculator](https://everydaycalculator.net/financial/inflation-calculator) - Calculate the buying power of money over time using historical CPI data. - [Amortization Schedule](https://everydaycalculator.net/financial/amortization-calculator) - Generate a detailed mortgage or loan amortization schedule with monthly payments. - [Auto Loan Calculator](https://everydaycalculator.net/financial/auto-loan-calculator) - Calculate monthly car payments, interest, and total cost of an auto loan. - [Refinance Calculator](https://everydaycalculator.net/financial/refinance-calculator) - Compare current and new loans to determine potential refinance savings. - [Retirement Planner](https://everydaycalculator.net/financial/retirement-calculator) - Calculate the savings needed to reach your retirement goals. - [Interest Calculator](https://everydaycalculator.net/financial/interest-calculator) - Calculate compound or simple interest earned on savings or investments over time. ### Education - [Baccalauréat Grade Calculator](https://everydaycalculator.net/education/baccalaureate-calculator) - Estimate French Baccalauréat scores and honors under the 2021 reform. - [Final Grade Calculator](https://everydaycalculator.net/education/final-grade-calculator) - Determine the minimum score needed on a final exam to achieve a target course grade. - [High School Cumulative GPA](https://everydaycalculator.net/education/high-school-gpa-calculator) - Calculate weighted or unweighted high school grade point average. - [IB Diploma Score Calculator](https://everydaycalculator.net/education/ib-diploma-calculator) - Predict International Baccalaureate diploma points and check passing requirements. - [EBAU Selectividad Calculator](https://everydaycalculator.net/education/ebau-selectividad-calculator) - Calculate university admission grades for Spanish high school graduates. - [Romanian Bacalaureat Calculator](https://everydaycalculator.net/education/romanian-bac-calculator) - Compute the average grade for the Romanian Bacalaureat exam. ### Medical - [A-a Gradient Calculator](https://everydaycalculator.net/medical/aa-gradient-calculator) - Calculate the alveolar-arterial oxygen gradient to evaluate hypoxemia. - [PF Ratio Calculator](https://everydaycalculator.net/medical/pf-ratio-calculator) - Calculate the PaO2/FiO2 ratio to assess lung function and severity of ARDS. - [Winter's Formula](https://everydaycalculator.net/medical/winters-formula) - Calculate expected respiratory compensation for metabolic acidosis. - [BSA Calculator](https://everydaycalculator.net/health/bsa-calculator) - Calculate body surface area using Mosteller, Du Bois, Haycock, or Gehan-George formulas. - [Drug Half-Life](https://everydaycalculator.net/health/drug-half-life-calculator) - Calculate the concentration of a medication over time based on its half-life. - [MAP (Blood Pressure)](https://everydaycalculator.net/health/map-calculator) - Calculate mean arterial pressure using systolic and diastolic blood pressure. - [IV Drip Rate](https://everydaycalculator.net/health/iv-drip-rate-calculator) - Calculate IV infusion rates in drops per minute or mL per hour. - [A1C Calculator](https://everydaycalculator.net/health/a1c-calculator) - Convert average blood glucose levels to HbA1c percentage and vice-versa. - [HOMA-IR Calculator](https://everydaycalculator.net/health/homa-ir-calculator) - Estimate insulin resistance and beta-cell function using fasting glucose and insulin levels. - [GFR Calculator](https://everydaycalculator.net/health/gfr-calculator) - Estimate glomerular filtration rate using MDRD, CKD-EPI, or Cockcroft-Gault equations. - [Anion Gap](https://everydaycalculator.net/health/anion-gap-calculator) - Calculate the serum anion gap to evaluate acid-base disorders. - [ANC Calculator](https://everydaycalculator.net/health/anc-calculator) - Calculate absolute neutrophil count to assess risk of infection. - [QTc Calculator](https://everydaycalculator.net/health/qtc-calculator) - Calculate corrected QT interval using Bazett, Fridericia, Framingham, or Hodges formulas. - [Corrected Calcium Calculator](https://everydaycalculator.net/health/corrected-calcium-calculator) - Adjust serum calcium levels based on albumin concentration. - [Sodium Correction Calculator](https://everydaycalculator.net/health/sodium-correction-calculator) - Calculate corrected sodium concentration in the presence of hyperglycemia. - [Creatinine Clearance](https://everydaycalculator.net/health/creatinine-clearance-calculator) - Estimate renal function using measured serum and urine creatinine. - [FENa Calculator](https://everydaycalculator.net/health/fena-calculator) - Calculate fractional excretion of sodium to differentiate pre-renal from intrinsic renal failure. - [FEUrea Calculator](https://everydaycalculator.net/health/feurea-calculator) - Calculate fractional excretion of urea when diuretics confound FENa. ### Health - [BMI Calculator](https://everydaycalculator.net/health/bmi-calculator) - Calculate standard Body Mass Index for adults. - [New BMI (Oxford)](https://everydaycalculator.net/health/new-bmi-calculator) - Calculate BMI using the Oxford University scaled formula. - [Asian BMI](https://everydaycalculator.net/health/asian-bmi-calculator) - Calculate BMI using WHO Asia-Pacific threshold classifications. - [BMR Calculator](https://everydaycalculator.net/health/bmr-calculator) - Calculate basal metabolic rate using Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle formulas. - [TDEE Calculator](https://everydaycalculator.net/health/tdee-calculator) - Estimate total daily energy expenditure based on activity level. - [Calorie Calculator](https://everydaycalculator.net/health/calorie-calculator) - Calculate daily calorie requirements for weight maintenance, loss, or gain. - [Calorie Deficit](https://everydaycalculator.net/health/calorie-deficit-calculator) - Determine calorie targets and timelines for weight loss goals. - [Macro Calculator](https://everydaycalculator.net/health/macro-calculator) - Calculate daily macronutrient distribution based on fitness goals. - [Weight Loss Percentage](https://everydaycalculator.net/health/weight-loss-percentage-calculator) - Calculate relative weight change over time. - [Target Heart Rate](https://everydaycalculator.net/health/target-heart-rate-calculator) - Determine target aerobic heart rate zones using the Karvonen formula. - [Water Intake Calculator](https://everydaycalculator.net/health/water-intake-calculator) - Estimate daily hydration needs based on weight, activity, and climate. - [Body Fat (US Navy)](https://everydaycalculator.net/health/body-fat-calculator) - Estimate body fat percentage using circumference measurements. - [Relative Fat Mass (RFM)](https://everydaycalculator.net/health/rfm-calculator) - Calculate body fat percentage using height and waist measurements. - [Fat-Free Mass (FFMI)](https://everydaycalculator.net/health/ffmi-calculator) - Calculate Fat-Free Mass Index to evaluate muscularity. - [Body Roundness (BRI)](https://everydaycalculator.net/health/body-roundness-index-calculator) - Calculate Body Roundness Index using height and waist circumference. - [Body Adiposity Index (BAI)](https://everydaycalculator.net/health/bai-calculator) - Estimate body fat percentage using hip circumference and height. - [VO2 Max Calculator](https://everydaycalculator.net/health/vo2-max-calculator) - Estimate maximum oxygen consumption using walking or running tests. - [One Rep Max (1RM)](https://everydaycalculator.net/health/one-rep-max-calculator) - Calculate maximum lifting capacity using submaximal repetition formulas. - [Running Pace](https://everydaycalculator.net/health/running-pace-calculator) - Calculate split times, pace, or duration for run training. - [Skinfold Body Fat](https://everydaycalculator.net/health/skinfold-body-fat-calculator) - Estimate body fat percentage using caliper skinfold thickness measurements. - [Ideal Weight](https://everydaycalculator.net/health/ideal-weight-calculator) - Determine healthy weight ranges using Devine, Robinson, Miller, and Hamwi equations. - [Waist-to-Hip Ratio](https://everydaycalculator.net/health/waist-to-hip-ratio-calculator) - Calculate waist-to-hip ratio to assess abdominal obesity risk. - [Waist-to-Height Ratio](https://everydaycalculator.net/health/waist-to-height-ratio-calculator) - Calculate waist-to-height ratio to assess cardiovascular risk. - [Body Shape](https://everydaycalculator.net/health/body-shape-calculator) - Identify body shape category based on bust, waist, and hip dimensions. - [Face Shape Calculator](https://everydaycalculator.net/health/face-shape-calculator) - Identify face shape using facial width and length ratios. - [Lean Body Mass](https://everydaycalculator.net/health/lean-body-mass-calculator) - Calculate fat-free weight using Boer, James, or Hume formulas. - [Body Frame Size](https://everydaycalculator.net/health/body-frame-size-calculator) - Determine body frame category using wrist or elbow measurements. - [ABSI Calculator](https://everydaycalculator.net/health/absi-calculator) - Calculate A Body Shape Index to evaluate abdominal fat risk. - [Ponderal Index](https://everydaycalculator.net/health/ponderal-index-calculator) - Calculate body mass distribution relative to height cubed. - [Draw Length Calculator](https://everydaycalculator.net/health/draw-length-calculator) - Estimate archery draw length from arm span. - [Due Date Calculator](https://everydaycalculator.net/health/due-date-calculator) - Estimate pregnancy due date using LMP, conception date, or ultrasound. - [Ovulation Calculator](https://everydaycalculator.net/health/ovulation-calculator) - Estimate fertile windows and ovulation days based on cycle history. - [Conception Date](https://everydaycalculator.net/health/conception-date-calculator) - Estimate conception date range based on due date or LMP. - [Pregnancy Weight Gain](https://everydaycalculator.net/health/pregnancy-weight-gain-calculator) - Track recommended gestational weight gain based on pre-pregnancy BMI. - [IVF Due Date](https://everydaycalculator.net/health/ivf-due-date-calculator) - Calculate due date and milestones for IVF cycles. - [Gestational Age](https://everydaycalculator.net/health/gestational-age-calculator) - Estimate current week and day of pregnancy. - [Child Height Predictor](https://everydaycalculator.net/health/child-height-predictor) - Estimate adult height using mid-parental height or Khamis-Roche methods. - [Pediatric BMI](https://everydaycalculator.net/health/bmi-calculator-for-kids) - Determine BMI percentile ranges for children and teens. - [Pediatric Dosage](https://everydaycalculator.net/health/pediatric-dosage-calculator) - Calculate weight-based medication doses for infants and children. - [Diabetes Risk Test](https://everydaycalculator.net/health/diabetes-risk-calculator) - Assess type 2 diabetes risk based on lifestyle factors. - [Framingham Risk](https://everydaycalculator.net/health/framingham-risk-score) - Calculate 10-year risk of cardiovascular disease. - [Adjusted Body Weight](https://everydaycalculator.net/health/adjusted-body-weight-calculator) - Calculate dosing weight for obese patients. - [Sleep Cycle Calculator](https://everydaycalculator.net/health/sleep-cycle-calculator) - Plan wake and sleep times based on natural sleep cycles. - [BAC Calculator](https://everydaycalculator.net/health/bac-calculator) - Estimate Blood Alcohol Concentration over time using the Widmark formula. - [Smoking Cost Calculator](https://everydaycalculator.net/health/smoking-cost-calculator) - Estimate financial costs and lifespan impact of tobacco consumption. - [Alcohol Cost Calculator](https://everydaycalculator.net/health/alcohol-cost-calculator) - Calculate financial expenses associated with alcohol consumption. - [Bedridden Height](https://everydaycalculator.net/health/bedridden-patient-height-calculator) - Estimate height using knee height or demispan for bedridden patients. - [Army Body Fat](https://everydaycalculator.net/health/army-body-fat-calculator) - Check compliance with US Army body fat standards. - [Navy Body Fat](https://everydaycalculator.net/health/navy-body-fat-calculator) - Check compliance with US Navy body fat standards. - [ACFT Calculator](https://everydaycalculator.net/health/acft-calculator) - Calculate Army Combat Fitness Test scores and standards. - [Air Force PT](https://everydaycalculator.net/health/air-force-pt-calculator) - Calculate US Air Force physical fitness assessment scores. ### Math - [Scientific Calculator](https://everydaycalculator.net/math/scientific-calculator) - Perform algebraic, trigonometric, logarithmic, and exponential calculations. - [Fraction Calculator](https://everydaycalculator.net/math/fraction-calculator) - Add, subtract, multiply, divide, simplify, and convert fractions. - [Percentage Calculator](https://everydaycalculator.net/math/percentage-calculator) - Solve basic percentage equations, percentage differences, and rates. - [Random Number Generator](https://everydaycalculator.net/math/random-number-generator) - Generate pseudo-random numbers with custom bounds and formats. - [Triangle Calculator](https://everydaycalculator.net/math/triangle-calculator) - Solve triangle angles, sides, area, and perimeter using SSS, SAS, or ASA data. - [Standard Deviation](https://everydaycalculator.net/math/standard-deviation-calculator) - Calculate population and sample standard deviation, variance, and mean. ### Other - [Age Calculator](https://everydaycalculator.net/other/age-calculator) - Calculate chronologic age in years, months, weeks, days, hours, and minutes. - [Date Calculator](https://everydaycalculator.net/other/date-calculator) - Calculate days between dates or add/subtract time intervals to a date. - [Time Calculator](https://everydaycalculator.net/other/time-calculator) - Add, subtract, or convert time values and calculate elapsed durations. - [GPA Calculator](https://everydaycalculator.net/other/gpa-calculator) - Calculate course GPA based on letter grades, numeric grades, or percentages. - [Password Generator](https://everydaycalculator.net/other/password-generator) - Generate secure, cryptographically random passwords with custom parameters. - [3D Printing Cost](https://everydaycalculator.net/other/printing-cost-calculator) - Estimate 3D print costs based on filament, power, labor, and wear.