All Tools
100 free calculators, converters & financial tools
Percentage Calculator
Calculate percentages
Scientific Calculator
Scientific calculations
Fraction Calculator
Add, subtract, multiply & divide fractions
Quadratic Equation Solver
Solve ax² + bx + c = 0
Pythagorean Theorem Calculator
Calculate sides of a right triangle
Average Calculator
Mean, weighted average
Graphing Calculator
Plot functions and equations visually
Statistics Calculator
Mean, median, mode & standard deviation
Standard Deviation Calculator
Calculate standard deviation & variance
Z-Score Calculator
Calculate z-scores & probabilities
Confidence Interval Calculator
Calculate confidence intervals
Sample Size Calculator
Determine required sample size
Correlation Calculator
Calculate correlation coefficient
Percentile Calculator
Calculate percentile rank
A/B Test Calculator
Statistical significance for A/B tests
Variance Calculator
Population & sample variance
Length Converter
Convert length units
Weight Converter
Convert weight units
Temperature Converter
Convert temperatures
Currency Converter
Convert currencies
Loan EMI Calculator
Calculate loan EMI
Compound Interest Calculator
Calculate compound interest
Simple Interest Calculator
Calculate simple interest
SIP Calculator (India)
Systematic Investment Plan returns
Mortgage Calculator
Calculate mortgage payments
Retirement Calculator
Plan your retirement savings
ROI Calculator
Calculate return on investment
Discount Calculator
Calculate sale price & savings
Tip Calculator
Calculate tips
Break-Even Calculator
Find your break-even point
Margin Calculator
Calculate profit margins
Salary Calculator
Calculate take-home pay & deductions
Inflation Calculator
Calculate purchasing power over time
Amortization Calculator
View loan amortization schedule
Credit Card Payoff Calculator
Plan credit card debt payoff
Auto Loan Calculator
Calculate car loan payments
Savings Goal Calculator
Plan monthly savings for a goal
NPV Calculator
Calculate net present value
IRR Calculator
Calculate internal rate of return
CAGR Calculator
Calculate compound annual growth rate
Depreciation Calculator
Calculate asset depreciation
Rule of 72 Calculator
Doubling time estimator
Startup Runway Calculator
Calculate months of runway left
Burn Rate Calculator
Calculate monthly burn rate
LTV Calculator
Calculate customer lifetime value
CAC Calculator
Calculate customer acquisition cost
Churn Rate Calculator
Calculate customer churn rate
MRR Calculator
Calculate monthly recurring revenue
BMI Calculator
Calculate your BMI
BMR Calculator
Calculate basal metabolic rate
Calorie Calculator
Daily calorie needs
Body Fat Calculator
Estimate body fat percentage
Ideal Weight Calculator
Find your ideal weight
Water Intake Calculator
Daily water intake
Macro Calculator
Calculate macronutrients
TDEE Calculator
Calculate total daily energy expenditure
One Rep Max Calculator
Calculate your one rep max
Pace Calculator
Calculate running or walking pace
Age Calculator
Calculate your exact age
Date Difference Calculator
Days between dates
JSON Formatter
Format & validate JSON data
Word Counter
Count words, characters & sentences
Color Converter
HEX, RGB & HSL converter
Ohm's Law Calculator
Calculate voltage, current & resistance
Password Generator
Generate secure passwords
GPA Calculator
Calculate your GPA
Margin Of Error
Margin Of Error calculator and tool
Contribution Margin
Contribution Margin calculator and tool
Conversion Rate Calculator
Conversion Rate Calculator calculator and tool
L T V C A C Ratio
L T V C A C Ratio calculator and tool
Payback Period
Payback Period calculator and tool
Cap Rate Calculator
Real estate capitalization rate
Cash-on-Cash Return
Real estate cash return %
Rental Yield Calculator
Calculate rental return on investment
Debt Service Coverage Ratio
Calculate DSCR for property loans
Gross Rent Multiplier
Evaluate investment property value
BMI Calculator (Clinical)
Clinical BMI with risk categories
Beam Calculator
Calculate load, deflection, shear & moment
Gear Ratio Calculator
Calculate gear ratios & output speed/torque
Voltage Divider Calculator
Output voltage from resistor divider
Integral Calculator
Definite & indefinite integrals
Derivative Calculator
First & higher-order derivatives
JEE Rank Predictor
Predict JEE Main/Advanced rank from score
US Federal Tax Calculator
Calculate US federal income tax
India Income Tax Calculator
Indian income tax calculation
BTU Calculator
Heating & cooling BTU requirements
ANOVA Calculator
One-way & two-way analysis of variance
Amazon FBA Fee Calculator
Calculate Amazon FBA fees & profit
YouTube Earnings Calculator
Estimate YouTube ad revenue
OEE Calculator
Calculate Overall Equipment Effectiveness from availability, performance, and quality
Weight & Balance Calculator
Aircraft weight and center-of-gravity calculation
Salary/Paycheck Calculator
Calculate take-home pay after taxes and deductions
Life Insurance Needs
Estimate how much life insurance coverage you need
Military Pay Calculator
Calculate base pay, BAH, BAS, and special pays
Dimensional Weight Calculator
DIM weight for shipping carriers
Seed Rate Calculator
Calculate seeding rate per acre or hectare
Donation Impact Calculator
See the impact of your charitable donations
BOD/COD Calculator
Biochemical and chemical oxygen demand in water
Lift/Drag Calculator
Calculate lift-to-drag ratio for aircraft
Time Study Calculator
Standard time from observed cycle times