Business Calculators
Break-even, profit margin, markup, and business math.
16 calculators across 4 groups
Pricing & Margin
3 calculatorsOperations
4 calculatorsMeeting Cost Calculator — Per-Hour, Annual Total
Add attendees by group (count + hourly rate), enter duration, and (optionally) recurrence per week. See per-meeting, weekly, and annual cost.
LLM API Cost Calculator — Compare GPT, Claude, Gemini
Enter input/output tokens per call and daily call volume. Pick which models to compare. See per-call, daily, monthly, and annual cost for each.
YouTube Earnings Calculator — RPM by Niche
Enter your monthly views, pick your niche, and see expected ad revenue + sponsorship income. Niche matters more than view count for monetization.
Side Hustle True Hourly Rate Calculator
Enter monthly revenue, expenses, hours worked (including admin time), and tax rates. See your true take-home hourly rate.
Energy & Sustainability
2 calculatorsSolar Panel Payback Calculator — 25-Year ROI
Enter your system cost, size, sun hours, and electricity rate. Get payback year, 25-year savings, and ROI percentage.
Heat Pump vs Gas Furnace ROI Calculator
Enter both system costs, your rebate, annual heating need, and energy prices. Get annual savings and payback year.
Other
7 calculatorsInvoice Calculator
Add line items, tax rate, and discount to calculate full invoice total.
Payroll Calculator
Enter salary and pay frequency to calculate net pay and all withholding amounts.
Rent vs Buy Calculator
Enter home price, rent, and assumptions to see whether buying or renting costs less over time.
Dollar-Cost Averaging Calculator
Enter monthly investment and annual return to see total DCA investment growth over time.
Cap Rate Calculator
Enter rental income, expenses, and property value to calculate cap rate and NOI.
Inflation Calculator
Enter an amount and inflation rate to see purchasing power over time.
Home Affordability Calculator
Enter income, debts, and down payment to find your maximum affordable home price.