Everyday Utility Tools, Zero Telemetry.
High-performance calculators, unit converters, and media optimizers running directly and privately inside your browser memory.
Safe Withdrawal Rate Calculator
Determine sustainable retirement withdrawals across horizon and asset allocations.
Will Living Trust Calculator
Compare estate planning costs between last wills and revocable living trusts.
Amazon FBA Fee Calculator
Calculate Amazon FBA referral fees, fulfillment costs, and net margin.
South Dakota Paycheck Calculator
Calculate South Dakota take-home pay with zero state tax and FICA.
Attention Span Focus Test
Assess sustained attention, task switching, and distraction resistance.
Swiss Inheritance Tax Calculator
Calculate Swiss cantonal inheritance taxes across direct and indirect heirs.
Eid Countdown Timer
Track live countdown days, hours, and seconds to Eid celebrations.
3D Dice Roller
Calculate polyhedral dice roll averages, modifier totals, and DC odds.
Startup Equity Split Calculator
Calculate cofounder equity splits based on capital, idea, commitment, and role.
Flutter Widget Sizer
Calculate Flutter widget heights, physical pixel densities, and RAM usage.
Rent Burden Calculator
Calculate housing rent burden percentage, HUD standards, and budget limits.
Labor Cost Calculator
Calculate restaurant labor cost percentages, payroll burden, and sales targets.
About ToolSlash Engine
ToolSlash is a high-performance utility platform engineered for speed, privacy, and efficiency. Our core engine powers a wide array of everyday tools - from quick converters to sophisticated text and media processors. By running complex algorithms directly in your browser, we eliminate server round-trips to deliver a seamless, lightning-fast experience.
Frequently Asked Questions
- Are the utilities free?
- Yes, all utility tools on the ToolSlash platform are 100% free to use. There are no premium tiers, hidden fees, or paywalls.
- How is data processed?
- We strongly prioritize client-side processing. Most of our tools execute entirely within your browser memory for maximum speed and zero data exposure.
- Is my data saved?
- While some computationally heavy tools may require our backend engine, your files and data are never saved, stored, or analyzed by us.