Everyday Utility Tools, Zero Telemetry.
High-performance calculators, unit converters, and media optimizers running directly and privately inside your browser memory.
Half-Life Calculator
Calculate radioactive decay, remaining isotope substance, elapsed half-lives, decay constant (lambda), and drug elimination half-life.
South Carolina Sales Tax Calculator 2026
Calculate South Carolina 6.0% state sales tax, county local option taxes (up to 9.0% in Charleston), and reverse tax calculations.
Inventory Par Level Calculator
Calculate optimal inventory par levels, reorder points (ROP), safety stock cushions, and purchase order quantities for restaurants, bars, and retail establishments.
Itemize vs Standard Deduction Calculator 2026
Compare itemizing deductions on IRS Schedule A versus taking the Standard Deduction for 2026/2027. Analyzes mortgage interest, the $10,000 SALT cap, charitable giving, and 7.5% AGI medical thresholds.
ADHD Self-Screening Test (ASRS v1.1)
Complete the validated World Health Organization Adult ADHD Self-Report Scale (ASRS v1.1). 12 clinically formulated questions assessing executive dysfunction, inattention, impulsivity, and hyperactivity.
Medigap Plan G Cost Calculator 2026
Estimate Medigap Plan G monthly and annual premiums by age, gender, tobacco status, state rating tier, and household discounts. Includes Part B deductible out-of-pocket caps.
Virginia Sales Tax Calculator 2026
Calculate Virginia state, regional, and local sales taxes on any purchase.
Rosenberg Self-Esteem Scale (RSES) Test
Clinically validated 10-item psychometric assessment measuring global self-worth and self-acceptance.
Invoice Due Date Calculator 2026
Calculate invoice payment due dates, 2/10 Net 30 early payment discounts, annualized APR cost of credit, and late payment penalties.
VO2 Max Calculator 2026
Estimate cardiorespiratory endurance VO2 max using the Cooper 12-minute run protocol and resting heart rate ratios.
Tennessee Property Tax Calculator 2026
Calculate Tennessee county and municipal property taxes using the statutory 25% residential assessment ratio.
EITC Calculator 2026
Estimate your refundable Earned Income Tax Credit (EITC) refund based on earned wages, qualifying children, and IRS phase-out schedules.
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.