Calculators
Privacy-first, browser-side calculations. Solve math equations, compute statistics, split group bills, estimate due dates, or parse running paces.
Math Calculators
Percentage Calculator
Calculate percentages, percentage increases/decreases, and values.
GCD & LCM Calculator
Find the Greatest Common Divisor and Least Common Multiple of two integers.
Prime Factorization Calculator
Find all prime factor steps for any positive integer.
Factorial Calculator
Calculate the factorial (n!) of any positive integer.
Logarithm Calculator
Compute logarithm base 10, natural log (ln), or custom bases.
Descriptive Statistics Calculator
Calculate mean, median, mode, variance, and standard deviation.
Quadratic Equation Solver
Find roots of quadratic equations ax² + bx + c = 0.
Everyday & Utility Calculators
Bill Splitter & Tip Calculator
Easily split group bills and calculate exact tip portions.
Unit Price Comparator
Compare value-for-money between two different price/quantity items.
Reading Time Estimator
Estimate content reading time based on total word count.
Fuel Cost Calculator
Calculate fuel expenses for custom road trip travel distances.
Recipe Scaler
Scale recipe ingredient quantities by a custom multiplier.
Finance & Loan Calculators
Compound Interest Calculator
Calculate future wealth value using compound interest formulas.
Loan EMI Calculator
Calculate monthly loan EMI payments and total interest schedules.
Simple Interest Calculator
Calculate simple interest earnings on investments.
Return on Investment (ROI)
Evaluate investment returns and profitability percentages.
Break-Even Point Calculator
Determine required unit sales to cover fixed manufacturing costs.
Discount & Sale Calculator
Calculate sale prices and final savings amounts.
Hourly to Salary Converter
Convert hourly wages to weekly, monthly, and annual equivalents.
Real Estate Calculators
Capitalization Rate (Cap Rate)
Calculate property capitalization rates based on NOI.
Rental Yield Calculator
Calculate Gross and Net rental yields for properties.
Property Tax Calculator
Estimate annual property tax based on assessed values.
Mortgage Early Payoff Calculator
Shorten mortgage terms and save on interest by making extra payments.
Health & Fitness Calculators (Safe Subset)
Pregnancy Due Date Calculator
Estimate delivery dates using Naegele's rule (LMP + 280 days).
Ovulation Cycle Calculator
Identify peak fertility windows based on LMP and cycle lengths.
Running Pace Calculator
Calculate average running pace or time goals for set training distances.
Water Intake Calculator
Estimate daily hydration volume needs based on body weights.
BMI Calculator (WHO Standards)
Calculate Body Mass Index (height, weight) with WHO boundaries.
More coming soon
We are building new browser-based tools every week.