Money Calculators
Tax & finance calculators
Sales Tax / VAT & Tip Calculator
Global sales tax/VAT rates for 10+ countries, tip calculator, and tax-free simulation.
Bill Splitter
Split the bill among friends with rounding options.
Percentage Calculator
Calculate percentages, ratios, and changes in 3 modes.
Discount Calculator
Instantly calculate discounted prices for sales & coupons.
Loan Repayment Simulator
Calculate monthly payments and total interest for loans.
Take-Home Pay Calculator
Calculate net take-home pay from gross salary. Auto-calculates income tax, resident tax, and social insurance. Covers the 1.03M and 1.5M yen income thresholds.
Compound Interest Calculator
Simulate investment growth with compound interest.
Gross Margin Calculator
Calculate gross profit and margin from revenue and cost.
Break-Even Point Calculator
Calculate break-even sales from fixed and variable costs.
NISA Investment Simulator
Simulate asset growth with Japan's New NISA tax-free investment system. Visualize tax savings.
Mortgage Simulator
Calculate mortgage payments, interest, and housing loan tax deductions with visual charts.
Rent vs Buy Simulator
Compare total cost and net worth of renting vs buying over time. Break-even analysis with charts.
Life Plan / FIRE Simulator
Simulate FIRE age, retirement fund sufficiency, and reverse-calculate monthly savings. Asset projection chart included.
Habit Cost Calculator
See how small daily expenses add up over time, and what they could become if invested instead.