Free online calculators you can trust
Fast, accurate, ad-light calculators for fitness, clinical practice and everyday finance. No sign-up. Every formula is cited.
- 21 calculators
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Popular calculators
TDEE CalculatorFree TDEE calculator: find your maintenance calories, BMR and calorie targets for weight loss or muscle…Calorie Deficit CalculatorCalculate your daily calorie target and deficit to lose weight at a safe pace, and estimate how many weeks…Body Fat CalculatorEstimate your body fat percentage from simple tape measurements using the US Navy method, with fat mass,…BMI CalculatorCalculate your BMI in kg and cm or pounds and feet, with standard WHO categories or lower Asian-population…Creatinine Clearance CalculatorCalculate creatinine clearance with the Cockcroft-Gault equation using actual, ideal or adjusted body…eGFR Calculator (CKD-EPI 2021)Calculate eGFR from serum creatinine with the race-free CKD-EPI 2021 equation. Accepts mg/dL or µmol/L and…Loan EMI CalculatorCalculate your monthly loan instalment (EMI), total interest and total repayment for any loan amount,…Compound Interest CalculatorSee how savings or investments grow with compound interest, with optional monthly contributions and your…Zakat CalculatorCalculate Zakat at 2.5% on cash, gold, silver, investments and business assets after liabilities, and…Feet & Inches to CM ConverterConvert height from feet and inches to centimetres and back instantly, with a full height chart from 4'8"…
Fitness & Body
TDEE CalculatorFree TDEE calculator: find your maintenance calories, BMR and calorie targets for weight loss or muscle…Calorie Deficit CalculatorCalculate your daily calorie target and deficit to lose weight at a safe pace, and estimate how many weeks…Macro CalculatorTurn your daily calories into grams of protein, carbohydrate and fat with preset macro splits, plus the…Protein Intake CalculatorFind your daily protein target in grams based on body weight and goal: general health, active lifestyle,…Body Fat CalculatorEstimate your body fat percentage from simple tape measurements using the US Navy method, with fat mass,…Lean Body Mass CalculatorCalculate lean body mass with the Boer, James and Hume formulas side by side, or from your body fat…Ideal Weight CalculatorFind your ideal body weight with the Devine, Robinson, Miller and Hamwi formulas, plus your healthy BMI…BMI CalculatorCalculate your BMI in kg and cm or pounds and feet, with standard WHO categories or lower Asian-population…
Clinical & Pharmacy
Creatinine Clearance CalculatorCalculate creatinine clearance with the Cockcroft-Gault equation using actual, ideal or adjusted body…eGFR Calculator (CKD-EPI 2021)Calculate eGFR from serum creatinine with the race-free CKD-EPI 2021 equation. Accepts mg/dL or µmol/L and…UACR CalculatorCalculate urine albumin-to-creatinine ratio (UACR/ACR) in mg/g and mg/mmol and see the KDIGO albuminuria…Corrected Calcium CalculatorCalculate albumin-corrected serum calcium in mg/dL and mmol/L with the Payne formula and see whether the…Anion Gap CalculatorCalculate the serum anion gap from sodium, chloride and bicarbonate, with optional albumin correction, and…Mean Arterial Pressure CalculatorCalculate mean arterial pressure (MAP) and pulse pressure from systolic and diastolic blood pressure and…IV Drip Rate CalculatorCalculate IV infusion rate in mL/hour and drops per minute from volume, time and drop factor (10, 15, 20…Body Surface Area CalculatorCalculate body surface area in m² with the Mosteller, DuBois and Haycock formulas from height and weight.
Finance & Everyday
Loan EMI CalculatorCalculate your monthly loan instalment (EMI), total interest and total repayment for any loan amount,…Compound Interest CalculatorSee how savings or investments grow with compound interest, with optional monthly contributions and your…Zakat CalculatorCalculate Zakat at 2.5% on cash, gold, silver, investments and business assets after liabilities, and…Age CalculatorCalculate your exact age in years, months and days from your date of birth, plus total days lived and days…Feet & Inches to CM ConverterConvert height from feet and inches to centimetres and back instantly, with a full height chart from 4'8"…
Why use Calculate MedSync
Every formula is cited
Each calculator explains the equation, shows a worked example and links to the original research so you can verify it.
Built by a pharmacist
Clinical calculators are written by a licensed pharmacist with an eye on how they are used in real practice.
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Calculations run in your browser. Nothing you type is sent to a server, and there is no sign-up.