All Business Calculators Tools
Amazon FBA Profit Calculator
Calculate your real Amazon FBA profit after all fees — referral, fulfillment, storage, and ads
Break-Even Analysis Calculator
Calculate your break-even point, contribution margin, and profit at any volume — free, no signup
Contractor Markup Calculator
Calculate bid price from materials, labor, overhead, and desired profit margin or markup
Customer Lifetime Value Calculator
Calculate LTV, LTV:CAC ratio, payback period and what-if scenarios — free, instant, no signup
Employee True Cost Calculator
Calculate the real cost of hiring an employee beyond just salary — FICA, benefits, PTO, and more
Etsy Fee & Profit Calculator
Calculate Etsy seller fees, net profit, and margin instantly — free, no signup required
Free Invoice Generator
Create professional invoices and download as PDF — no signup required
Freelance Platform Fee Calculator
Compare net earnings after fees on Upwork, Fiverr, and Freelancer — see what you actually keep
Freelancer Rate Calculator
Calculate your ideal freelance hourly rate based on salary, expenses, taxes, and profit goals
Grocery Budget Calculator
Estimate your household grocery budget based on USDA food plan tiers, family size, and member ages
IBAN Validator & Parser
Validate, parse, and check any IBAN number instantly — free, private, no signup required
Late Payment Fee Calculator
Calculate overdue invoice interest, penalties, and total amount owed
Pour Cost Calculator
Calculate pour cost percentage, cost per drink, and profit per bottle for bars and restaurants
Profit Margin & Markup Calculator
Calculate gross profit, margin percentage, and markup from cost and price
PTO Accrual Calculator
Calculate your PTO balance, accrual schedule, and payout value instantly — free, private, no signup
SaaS Metrics Calculator
Calculate MRR, ARR, churn rate, LTV, CAC payback and more — free, instant, no signup
Sales Commission Calculator
Calculate commissions with flat, tiered, or accelerator structures and quota tracking
Startup Runway Calculator
Calculate how many months until your startup runs out of cash, with scenario analysis and growth projections
Subscription Cost Audit
Track all your recurring subscriptions, find hidden costs, and identify what to cut to save money
Tariff Impact Calculator
Estimate how 2026 US tariffs affect your household costs by product category
Business Calculators on FastTools are free, browser-based tools designed to help you get quick answers without signups or downloads. Every calculator runs entirely in your browser — your data never leaves your device.
Whether you're planning, budgeting, or just curious, these tools are built to be fast, accurate, and private. Pick any tool below to get started instantly.
Frequently Asked Questions
Are these business calculators free?
Yes, every tool is completely free to use with no signup, no account, and no hidden fees.
Is my data safe?
Absolutely. All calculations run locally in your browser. No data is sent to any server or stored anywhere.
Do I need to create an account?
No. Every tool works instantly with no registration required. Just open and start using.