Free Online Calculators

From BMI to loans, tips to age — instant calculations at your fingertips.

368 Calculators 16 Categories 100% Free

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Unit Converters

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MPH to Pace Converter

#1

Convert speed in miles per hour (mph) to pace in minutes per mile.

Sports & Performance 5 variants

Urine Protein-to-Creatinine Ratio (UPCR) Calculator

Calculates the Urine Protein-to-Creatinine Ratio (UPCR) to assess kidney function and proteinuria.

Health & Fitness 4 variants

Terminal Velocity Calculator

Calculate the terminal velocity of a falling object using mass, gravity, air density, drag coefficient, and cross-sectional area.

Science & Engineering 5 variants

Stair Stringer Length Calculator

Calculate the diagonal length of a stair stringer using total rise and total run based on the Pythagorean theorem.

Construction & Home 4 variants

Sharpe Ratio Calculator

Calculates the Sharpe Ratio to measure risk-adjusted investment return.

Financial Calculators 4 variants

Basal Metabolic Rate (BMR) Calculator

Calculate daily calorie needs at rest using the Mifflin-St Jeor equation.

Health & Fitness 5 variants
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368 total
Total Interest Paid Calculator Calculates the total interest paid over the full term of a loan based on loan am...
Financial Calculators
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Aspect Ratio Calculator Calculates the numeric aspect ratio of a rectangle by dividing width by height.
Math Calculators
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Monthly Savings Allocation Calculator (50/30/20 Rule) Calculate how much money to set aside for savings each month based on a chosen s...
Financial Calculators
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Arterial Oxygen Content (CaO₂) Calculator Calculates the total arterial oxygen content based on hemoglobin, oxygen saturat...
Chemistry & Biology
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Corrected Serum Sodium Calculator (Hyperglycemia) Estimates corrected serum sodium in patients with hyperglycemia using a standard...
Health & Fitness
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Gear Ratio Calculator Calculate the gear ratio between two gears based on their number of teeth.
Science & Engineering
EN
Pregnancy Weight Gain Calculator Estimates a woman's target weight during pregnancy based on pre-pregnancy weight...
Health & Fitness
EN
Real Wage Increase Calculator Calculates your real wage increase after accounting for inflation to show the tr...
Financial Calculators
EN
Fibonacci Retracement Level Calculator Calculates a single Fibonacci retracement price level based on a given price swi...
Financial Calculators
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Target Heart Rate Calculator (Karvonen Formula) Calculate your target heart rate for exercise using the Karvonen formula based o...
Health & Fitness
EN
Savings Rate Calculator Calculates the percentage of monthly income that is saved.
Financial Calculators
EN
Inflation-Adjusted Salary Calculator Calculate the real (inflation-adjusted) value of a nominal annual salary based o...
Financial Calculators
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