Browse every calculator
Finance
Salary Calculator
Hourly to annual, and take-home pay.
Loan Calculator
Payment schedule for any personal loan.
Compound Interest Calculator
Growth with regular contributions.
Retirement Calculator
How much you need to retire.
401(k) Growth Calculator
Your contribution, employer match, and compound growth.
Savings Goal Calculator
What to save monthly to hit a target.
Savings Calculator
Grow a lump sum at a fixed rate.
Tip Calculator
Split the bill and tip fairly.
Currency Converter
Convert between major world currencies.
Bank Interest Rates
Current rates — US, UK, Canada, Australia, India.
Pay Raise Calculator
New salary after a percentage raise.
Net Worth Calculator
Assets minus liabilities.
Investment Return Calculator
ROI including fees and costs.
Health
BMI Calculator
Body Mass Index, metric or imperial.
Calorie Calculator
Daily calories using the Mifflin-St Jeor equation.
Ideal Weight Calculator
Healthy weight range by height and frame.
Body Fat Calculator
US Navy method body fat estimate.
Pregnancy Due Date Calculator
Estimated due date from last period.
Everyday
Age Calculator
Exact age in years, months and days.
Percentage Calculator
Percent of a number, and percent change.
Date Difference Calculator
Years, months, and days between two dates.
GPA Calculator
Weighted or unweighted grade point average.
Unit Converter
Length, weight, temperature and volume.
Area Calculator
Rectangle area with automatic unit conversion.
Perimeter Calculator
Rectangle perimeter with automatic unit conversion.
Altitude Calculator
Pressure, temperature, and oxygen availability at any altitude.
Business
Liquidity Ratios Calculator
Current Ratio and Quick Ratio — what a lender checks first.
Working Capital Cycle Calculator
Debtor Days, Creditor Days, Inventory Days, and Cash Conversion Cycle.
Debt-to-Equity & Interest Coverage Calculator
The leverage ratios banks check before approving financing.
Stock Valuation & Return Ratios Calculator
P/E, P/B, Dividend Yield, ROE, and ROA for evaluating a stock.
Carbon Credit Value Calculator
Estimate potential carbon credit value with 2026 reference price ranges.
E-commerce & Digital Business Valuation Calculator
SDE, EBITDA, or revenue multiples from real marketplace data.
Brand Valuation Calculator
Royalty Relief method, the ISO 10668 standard practical approach.
Startup Loan Readiness Calculator
Check your DSCR against real SBA and lender thresholds.
Student
Quadratic Equation Solver
Solve ax²+bx+c=0 instantly with the discriminant shown.
Standard Deviation & Variance Calculator
Population or sample, with full methodology.
Fraction Calculator
Add, subtract, multiply, or divide fractions, auto-simplified.
Right Triangle Calculator
Solve from one angle and the hypotenuse.
Insurance
USA
UK
Canada
Canada Income Tax Calculator
Estimate 2026 Canadian federal income tax using CRA brackets and the Basic Personal Amount credit.
Canada RRSP & TFSA Calculator
Calculate your 2026 RRSP contribution room, TFSA limit, and estimated tax savings from an RRSP contribution.
NewRRSP vs TFSA Calculator
Which account nets more after-tax, based on your current vs. expected retirement tax bracket.
Canada Land Transfer Tax Calculator
Ontario provincial + Toronto municipal land transfer tax estimate, 2026 rates.
Australia
Australia Income Tax Calculator
Estimate 2026-27 Australian resident income tax plus the 2% Medicare levy, using current ATO brackets.
Australia Superannuation Calculator
Project your Australian superannuation balance at retirement using the current 12% Super Guarantee rate.
Australia Stamp Duty Calculator
NSW transfer duty (stamp duty) estimate, 2026 progressive rate bands.