Simple numbers. Better business decisions.
Free, practical calculators for pricing services and evaluating promotions—built for freelancers, local service businesses and ecommerce sellers.
Choose the decision you need to make
Price your services
Calculate the hourly rate, project quote or consulting day rate your business needs to support.
Evaluate discounts & promotions
Compare discounts, BOGO and bundles by real contribution profit, not by how big the discount looks.
Coming soonFind vetted business leads
Optional paid lead packs for selected U.S. service niches are in development. The calculators stay free.
Popular calculators
Service Pricing Calculator
Find your sustainable hourly rate from income, overhead and utilization.
Freelance Hourly Rate Calculator
A simplified rate calculator for freelancers.
Project Pricing Calculator
Turn an hourly rate into a fixed project quote.
Promotion Profit Calculator
Compare every promotion type side by side by real profit.
Discount Profit Calculator
Find the maximum discount you can afford to offer.
BOGO Profit Calculator
See the real profit behind a Buy One Get One Free deal.
How each decision turns into a number
Every SmallBizMath tool follows a visible path from business inputs to a decision you can check.
Two worked business decisions
SmallBizMath is designed to show the decision behind the number. These examples use the same transparent formulas available in the calculators, so you can replace every assumption with your own.
Pricing a solo service business
With $80,000 in desired owner compensation, $20,000 in annual overhead, 1,104 billable hours, a 10% reserve and a 15% target margin, the planning rate is $120.77 per billable hour. The service pricing calculator shows every step.
Testing a 20% discount
For a $30 item with $8 in delivered cost, contribution profit falls from $22 to $16 after a 20% discount. Before fees, sales volume must rise 37.5% just to recover the same total contribution. Test your own numbers in the discount calculator.
Finding relevant business leads
Optional paid lead packs for selected U.S. service niches are in development. Each pack is intended to disclose its niche, geography, fields, verification date and limitations before purchase. See the planned standard.
These examples are planning illustrations, not market-rate, tax, legal or accounting advice. Review the methodology and adjust every input to your situation.
Useful results without a black box
Transparent formulas
Each calculator explains its assumptions, shows the formula and includes a worked example you can verify.
Your inputs stay private
Calculations run in your browser. Prices, costs, income targets and rates are not submitted to SmallBizMath.
Built for decisions
Results include practical checks and limitations so you can use the number responsibly in a real business.
How the math works
SmallBizMath uses standard business-math relationships and keeps full precision until the display step. Read the full methodology for calculation logic, rounding rules and deliberate limitations.
Free calculators for smarter business decisions. No account is required, and every calculator remains available without a paywall.