Free Online Calculators

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

366 Calculators 16 Categories 100% Free

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37 Calculators

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6 Calculators

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25 Calculators

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45 Calculators

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Pregnancy Due Date Calculator

#1

Calculate estimated due date from last menstrual period.

Date & Time 5 variants

Population Standard Deviation Calculator (4 Values)

Calculates the population standard deviation of four numeric values using the exact mathematical formula.

Statistics & Probability 4 variants

Tire Size Diameter Calculator

Calculates the overall tire diameter in millimeters based on tire width, aspect ratio, and rim diameter.

Travel & Geography 5 variants

Fuel Cost Calculator

Estimates the total fuel expense for a trip based on distance, vehicle fuel efficiency, and fuel price per unit.

Travel & Geography 4 variants

Electricity Cost Calculator

Estimate the total electricity cost of running an appliance based on power usage, time, and electricity rate.

Electrical & Electronics 5 variants

Z-Score Calculator

Calculates how many standard deviations a value is from the mean.

Statistics & Probability 5 variants
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Calculators

366 total
Keto Macro Ratio Calculator Calculates the ketogenic ratio by dividing fat grams by the combined grams of pr...
Health & Fitness
EN
Capital Gains Tax Calculator Calculate the total capital gains tax owed on an asset sale based on purchase pr...
Financial Calculators
EN
Final Price After Discount and Tax Calculator Calculate the final price after applying a discount and then adding sales tax.
Business & Retail
EN
Market Capitalization Calculator Calculate a company's total market value based on current share price and total...
Financial Calculators
EN
Electrical Energy Consumption Calculator Calculates electrical energy consumption in kilowatt-hours (kWh) based on power...
Electrical & Electronics
EN
Price Elasticity of Supply (PES) Calculator Calculates the price elasticity of supply using the standard midpoint-free formu...
Business & Retail
EN
Speedometer Error Calculator Estimates the percentage speedometer error after changing tire diameter.
Travel & Geography
EN
Half-Life Calculator Calculates the remaining quantity of a substance after a given time based on its...
Science & Engineering
EN
Rebar Weight Calculator Calculate the total weight of reinforcing steel (rebar) based on total length an...
Construction & Home
EN
Free Testosterone Index (FTI) Calculator Estimates the Free Testosterone Index (FTI) using total testosterone and SHBG le...
Health & Fitness
EN
Mean Absolute Deviation (MAD) Calculator Calculates the mean absolute deviation of four numeric values from their mean.
Statistics & Probability
EN
Rent Affordability Calculator Estimates the maximum monthly rent you can afford based on your gross monthly in...
Financial Calculators
EN