Free calculators for money, work and business.

Free calculators for smarter everyday decisions

NumberMotive provides free, easy-to-use calculators for money, work and business. Get a clear estimate, see how the calculation works and make your next decision with confidence.

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Start with a working calculator

Small Business

Break-Even Calculator

Calculate break-even units, revenue and sales targets from fixed costs, price and variable cost.

Personal Finance

Budget Calculator

Estimate monthly income, expenses and budget surplus or deficit using a simple personal budgeting worksheet.

Small Business

Cash Runway Calculator

Estimate monthly net burn, cash runway and projected balances from your current cash inflows and outflows.

Personal Finance

Compound Interest Calculator

Estimate how an initial investment and monthly contributions can grow with compound interest.

Personal Finance

Debt Payoff Calculator

Estimate how long it may take to pay off debt and how additional monthly payments could affect total interest and payoff timing.

Personal Finance

Debt-to-Asset Ratio Calculator

Estimate your debt-to-asset ratio by comparing total liabilities with total assets using a simple balance sheet approach.

Personal Finance

Debt-to-Income Ratio Calculator

Estimate your monthly debt-to-income ratio by comparing recurring debt obligations with gross monthly income.

Personal Finance

Emergency Fund Calculator

Estimate an emergency savings target from monthly essential expenses and see how long a contribution could take to reach it.

Small Business

Employee Cost Calculator

Estimate salary, employer taxes, benefits, hiring expenses and overhead to understand the total cost of an employee.

Personal Finance

FIRE Calculator

Estimate how long it could take to reach financial independence using portfolio growth, monthly contributions and a withdrawal-rate assumption.

Freelance

Freelance Hourly Rate Calculator

Estimate the hourly rate needed to cover your income goal, business expenses, taxes, time off and non-billable work.

Pay & Work

Hourly to Salary Calculator

Convert an hourly wage into weekly, monthly and annual gross pay.

Personal Finance

Investment Growth Calculator

Estimate how an initial investment and recurring monthly contributions may grow with monthly compounding.

Personal Finance

Loan Payment Calculator

Estimate monthly loan payments, total interest and payoff timing using a standard amortization schedule.

Personal Finance

Net Worth Calculator

Estimate personal net worth by comparing total assets and liabilities using a simple balance sheet approach.

Pay & Work

Overtime Pay Calculator

Estimate regular and overtime pay from hours worked and a pay multiplier.

Small Business

Profit Margin Calculator

Calculate profit, margin and markup from cost and selling price.

Personal Finance

Retirement Growth Calculator

Estimate how current retirement savings and monthly contributions may grow with monthly compounding.

Personal Finance

Retirement Income Calculator

Estimate how long retirement savings could potentially support monthly withdrawals under different return assumptions.

Personal Finance

Retirement Withdrawal Calculator

Estimate annual and monthly retirement withdrawals using a portfolio balance and withdrawal-rate assumption.

Personal Finance

Savings Goal Calculator

Estimate how much you may need to save each month to reach a financial goal within your desired timeframe.

Small Business

Startup Cost Calculator

Estimate one-time costs, recurring expenses, working capital and the funding needed to start a business.

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Calculator categories

Find tools by the decision you are making. Coming soon items stay visible, but they do not open empty pages.

Pay & Work

Estimate pay, work hours and employment cost before you take the next step.

2 tools

Freelance

Turn freelance rates, project time and self-employed income into clearer numbers.

1 tool

Taxes

Prepare for U.S. tax estimates with transparent assumptions you can review.

2 tools

Small Business

Check margins, break-even points, runway and startup costs before you commit.

5 tools

Personal Finance

Use everyday math to compare money decisions with a clear calculation trail.

14 tools

Browse the full catalog

Why NumberMotive

Built to explain the math

Free to use

Use our calculators without creating an account.

No signup required

Get an estimate immediately without sharing personal information.

Clear calculation breakdowns

See the formulas, assumptions and steps behind your result.

Built with privacy in mind

Calculator inputs stay in your browser whenever server processing is not required.

Process

How NumberMotive works

  1. 1

    Enter your information

    Use the fields that match your situation. Help text explains what each number means.

  2. 2

    Review your estimate

    See a primary result and the related figures that help you compare options.

  3. 3

    Understand the calculation

    Read the memory of calculation, assumptions and limitations before you rely on the number.

  4. 4

    Make a more informed decision

    Use the estimate as a starting point, then confirm details with official sources or a professional when needed.

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