Pay Differential Calculator
Estimate shift, night, weekend or geographic differential pay from your own employer-defined rates.
Free · no signup · browser-based
Calculate first. Buy a deeper system only if the one-off result is not enough.
Practical calculators for work, household costs, game development, 3D asset production and co-op planning. Each tool keeps assumptions visible instead of hiding them behind an account.
Pay & work
Pay & work
Rotating Shift Pay Estimator
Estimate weekly, monthly and annual gross pay with overtime and hourly premiums.
Freelance Project Quote Calculator
Turn estimated work, revisions and scope into a transparent project quote.
Freelance Scope Change Cost Calculator
Estimate the price effect of added scope instead of absorbing it silently.
Vehicle & household
Vehicle & household
Vehicle Total Cost of Ownership Calculator
Estimate recurring vehicle TCO from fuel/charging, insurance, maintenance, registration, parking and finance.
Warranty Expiry Calculator
Calculate warranty end dates and a review window from purchase date and warranty duration.
Game development & 3D
Game development & 3D
Indie Game Outsourcing Cost Calculator
Estimate outsourced art and game-production costs before committing to scope.
3D Asset Marketplace Profit Calculator
Estimate net revenue, break-even sales and marketplace pricing viability.
3D Asset Pack Pricing Calculator
Compare pack pricing, fees, production effort and break-even scenarios.
3D Asset Cost Calculator
Estimate a practical cost range for a scoped 3D asset.
Game Launch Readiness Score
Score store positioning, trailer, content, outreach and launch operations.
Creator & business
Creator & business
Content ROI Calculator
Compare content effort with attributable value using your own assumptions.
Digital Product Break-even Calculator
Estimate sales needed to recover production costs and fees.
Software Stack Annual Cost Calculator
Normalize monthly, quarterly and annual software subscriptions into one yearly number.
Survival & co-op
Survival & co-op
Survival Game Server Cost Split Calculator
Split rented server cost per player and compare it with rough self-host electricity cost.
High-intent everyday calculators
Energy and vehicle cost tools
Use the free result first; the matching workbook is only for people who need repeatable tracking.
Electricity Cost Calculator
Watts × hours × days × your current kWh price.
Open electricity calculator →Cost Per Mile Calculator
Fuel-only and entered running costs per mile using one consistent period.
Open cost-per-mile calculator →Electric Car Electricity Cost Calculator
Split monthly EV charging between home and public rates.
Open EV calculator →Maintenance Cost Per Month Calculator
Build your own monthly reserve from service, tires, battery and repairs.
Open maintenance calculator →