NIHADIUM / FREE CALCULATORS

Know the numbers.
Make the decision.

Three lightweight calculators for common business questions. No logins, no uploads and no paid features hidden behind a submit button.

Free Commercial Cleaning Bid Calculator

Free cleaning bid calculator: estimate cost per visit, monthly price and margin from labor, supplies, travel and overhead. No sign-up.

Free vending machine contribution calculator. Subtract COGS, refunds, card fees, commissions and route mileage and labor. Works offline in browser.

Free HVAC quote markup versus margin calculator. Compare pricing from equipment, labor, direct costs and overhead with editable target percentages.