Pick a calculator
Choose by task; browse all if you are unsure.
01 · TOOLS
All Calculators
01
Take Home Pay Calculator
Estimate annual, monthly and per-paycheck take-home pay from gross income, tax rates, deductions and pay periods.
免费 · Free02
Hourly to Salary Calculator
Convert an hourly rate into annual, monthly, weekly and daily pay using hours per week and weeks per year.
免费 · Free03
Self-Employment Tax Calculator
Estimate self-employment tax, the deductible half and the effective rate from net profit and the Social Security wage base.
免费 · Free02 · HOW
How to use
Enter dimensions
Units sit next to each input; results convert automatically.
Read result and assumptions
Waste allowance is included; verify before ordering.
03 · WHY
Why use this site
01
Verifiable math
Every page shows the formula, assumptions and margin. No black box.
02
No signup
Open and calculate. Inputs stay in your browser and are not uploaded.
03
Localized
Chinese and English switch automatically, with units and rules adapted per market.
04 · FAQ
FAQ
How accurate is this?
Estimates follow public formulas with stated assumptions; verify high-stakes decisions on site.
Is it free?
All calculators are free today. Any future Pro tier will be priced on the page.
Do you store my inputs?
No. The math runs locally in your browser and is never submitted.
05 · GUIDES
Guides
G01
How to Calculate Take-Home Pay
Break gross pay into pre-tax deductions, federal and state tax, FICA and per-paycheck net, with the formula and common errors.
指南 · GuideG02
Hourly vs Salary: How to Compare
Compare hourly and salaried offers on annualized pay, hours, unpaid leave and benefits.
指南 · Guide