Math Calculatorsbrowser
Percentage Calculator
Calculate a percentage of any number.
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Free Calculators & Converters Tools
Solve everyday calculations across money, health, dates, education and physical units.
61 free toolsNo adsNo signup
Math Calculators
Calculate percentages, ratios, proportions, averages and fractions.
9 tools CollectionFinance Calculators
Explore interest, returns, discounts and everyday pricing.
8 tools CollectionBusiness Calculators
Calculate margins, growth, recurring revenue and business runway.
8 tools CollectionCrypto Calculators
Estimate position size, risk and cryptocurrency trade outcomes.
3 tools CollectionHealth & Fitness Calculators
Estimate common health, hydration, pace and fitness measurements.
7 tools CollectionDate & Time Calculators
Compare dates, adjust calendar values and convert Unix timestamps.
11 tools CollectionUnit Converters
Convert common measurement, storage, energy and engineering units.
12 tools CollectionEducation Calculators
Calculate grades, required results and GPA values.
3 tools9 tools
View collection →Math Calculators
Calculate percentages, ratios, proportions, averages and fractions.
Math Calculatorsbrowser
Percentage Increase Calculator
Find the percentage change between two values.
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Math Calculatorsbrowser
Rule of Three Calculator
Solve direct proportions with one unknown value.
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Math Calculatorsbrowser
Percentage Difference Calculator
Compare two values by their average magnitude.
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Math Calculatorsbrowser
Ratio Calculator
Calculate the ratio between two numbers.
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Math Calculatorsbrowser
Proportion Calculator
Solve A:B = C:X safely.
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Math Calculatorsbrowser
Average Calculator
Find the arithmetic mean of a number list.
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Math Calculatorsbrowser
Weighted Average Calculator
Calculate an average using matching weights.
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Math Calculatorsbrowser
Fraction to Decimal
Convert a numerator and denominator to decimal.
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8 tools
View collection →Finance Calculators
Explore interest, returns, discounts and everyday pricing.
Finance Calculatorsbrowser
Compound Interest Calculator
Project growth with recurring compound interest.
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Finance Calculatorsbrowser
Simple Interest Calculator
Calculate non-compounding interest.
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Finance Calculatorsbrowser
Discount Calculator
Calculate final price and savings.
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Finance Calculatorsbrowser
ROI Calculator
Calculate return on investment.
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Finance Calculatorsbrowser
Break-Even Price Calculator
Find the unit price that covers cost and fees.
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Finance Calculatorsbrowser
CAGR Calculator
Calculate compound annual growth rate.
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Finance Calculatorsbrowser
Tip & Split Bill Calculator
Calculate tip, total and amount per person.
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Finance Calculatorsbrowser
Unit Price Calculator
Compare cost by calculating price per unit.
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8 tools
View collection →Business Calculators
Calculate margins, growth, recurring revenue and business runway.
Business Calculatorsbrowser
Profit Margin Calculator
Calculate profit as a percentage of revenue.
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Business Calculatorsbrowser
Markup Calculator
Calculate markup from cost and selling price.
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Business Calculatorsbrowser
Gross Profit Calculator
Calculate gross profit and gross margin.
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Business Calculatorsbrowser
Revenue Growth Calculator
Measure growth between two revenue periods.
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Business Calculatorsbrowser
Burn Rate Calculator
Estimate average monthly cash burn.
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Business Calculatorsbrowser
Business Runway Calculator
Estimate how many months current cash can cover.
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Business Calculatorsbrowser
MRR to ARR Calculator
Annualize monthly recurring revenue.
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Business Calculatorsbrowser
Customer Churn Calculator
Calculate the percentage of customers lost.
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3 tools
View collection →Crypto Calculators
Estimate position size, risk and cryptocurrency trade outcomes.
Crypto Calculatorsbrowser
Crypto Position Size Calculator
Size a trade from account risk and stop distance.
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Crypto Calculatorsbrowser
Risk-Reward Calculator
Compare trade target distance with stop risk.
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Crypto Calculatorsbrowser
Crypto Profit & Loss Calculator
Calculate trade P&L after manual fees.
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7 tools
View collection →Health & Fitness Calculators
Estimate common health, hydration, pace and fitness measurements.
Health & Fitness Calculatorsbrowser
BMI Calculator
Estimate body mass index locally for general information.
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Health & Fitness Calculatorsbrowser
BMR Calculator
Estimate basal metabolic rate using the Mifflin-St Jeor formula.
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Health & Fitness Calculatorsbrowser
TDEE Calculator
Estimate daily energy use from a BMR and activity factor.
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Health & Fitness Calculatorsbrowser
Water Intake Calculator
Estimate a simple daily water baseline from body weight.
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Health & Fitness Calculatorsbrowser
Running Pace Calculator
Calculate average minutes per kilometer.
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Health & Fitness Calculatorsbrowser
Maximum Heart Rate Calculator
Estimate maximum heart rate from age for general information.
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Health & Fitness Calculatorsbrowser
Waist-to-Height Ratio Calculator
Calculate waist circumference divided by height.
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11 tools
View collection →Date & Time Calculators
Compare dates, adjust calendar values and convert Unix timestamps.
Date & Time Calculatorsbrowser
Date Difference Calculator
Count calendar days between two dates.
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Date & Time Calculatorsbrowser
Add Days to Date
Find a future date after adding days.
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Date & Time Calculatorsbrowser
Subtract Days From Date
Find an earlier date by subtracting days.
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Date & Time Calculatorsbrowser
Add Weeks to Date
Add a number of weeks to a date.
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Date & Time Calculatorsbrowser
Subtract Weeks From Date
Subtract a number of weeks from a date.
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Date & Time Calculatorsbrowser
Add Months to Date
Add calendar months using local browser time.
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Date & Time Calculatorsbrowser
Age Calculator
Calculate age in completed years.
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Date & Time Calculatorsbrowser
Business Days Calculator
Count weekdays between two dates.
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Date & Time Calculatorsbrowser
Leap Year Checker
Check Gregorian leap-year rules.
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Date & Time Calculatorsbrowser
Unix Timestamp to Date
Convert Unix seconds or milliseconds to ISO time.
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Date & Time Calculatorsbrowser
Date to Unix Timestamp
Convert a date and time to Unix seconds.
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12 tools
View collection →Unit Converters
Convert common measurement, storage, energy and engineering units.
Unit Convertersbrowser
Length Converter
Convert metric and imperial length units.
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Unit Convertersbrowser
Weight Converter
Convert kilograms, pounds, ounces and more.
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Unit Convertersbrowser
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin.
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Unit Convertersbrowser
Area Converter
Convert common metric and imperial areas.
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Unit Convertersbrowser
Volume Converter
Convert liters, gallons, cups and cubic units.
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Unit Convertersbrowser
Speed Converter
Convert speed between km/h, mph, knots and m/s.
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Unit Convertersbrowser
Time Unit Converter
Convert seconds, minutes, hours, days and weeks.
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Unit Convertersbrowser
Data Storage Converter
Convert decimal and binary storage units.
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Unit Convertersbrowser
Fuel Economy Converter
Convert MPG, L/100 km and km/L.
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Unit Convertersbrowser
Pressure Converter
Convert pascals, bar, PSI and atmospheres.
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Unit Convertersbrowser
Energy Converter
Convert joules, calories and watt-hours.
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Unit Convertersbrowser
Power Converter
Convert watts, kilowatts and horsepower.
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3 tools
View collection →Education Calculators
Calculate grades, required results and GPA values.
Education Calculatorsbrowser
Grade Calculator
Convert earned points into a percentage grade.
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Education Calculatorsbrowser
Required Final Exam Grade Calculator
Find the final exam score needed for a target grade.
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Education Calculatorsbrowser
GPA Calculator
Average a list of grades on a 0–4 scale.
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