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All Utilities

Find the right tool for the task in front of you.

Showing 1-12 of 64

  • Open A/B Test Significance Calculator
    A/B Test Significance Calculator Marketing

    Compare two A/B test variants with conversion rates, lift, p-value, confidence, winner guidance, and distribution charts.

  • Open Age Calculator
    Age Calculator Health

    Calculate current age, age on a specific date, target-age dates, birthday countdowns, and age differences from a birth date.

  • Open AI Crawler Policy Builder
    AI Crawler Policy Builder Marketing

    Build and review robots.txt rules for documented AI training crawlers, AI search crawlers, and user-triggered retrieval clients.

  • Open Auto Loan Calculator
    Auto Loan Calculator Finance

    Estimate a car loan payment and total cost from vehicle price, down payment, trade-in value, sales tax, fees, APR, and term.

  • Open Base64 Decode and Encode
    Base64 Decode and Encode Developer

    Decode Base64 values into UTF-8 text or encode text as standard Base64 in your browser, with clear input and copy controls.

  • Open BMI Calculator
    BMI Calculator Health

    Calculate BMI with standard or metric measurements, adult category ranges, and age- and sex-aware context for children and teens.

  • Open Bread Calculator
    Bread Calculator Food

    Scale bread formulas with baker's percentages, ingredient weights, total flour, dough weight, hydration, and target batch size.

  • Open Break-Even Calculator
    Break-Even Calculator Business

    Calculate break-even units and revenue, contribution margin, target-profit sales, and margin of safety for a product or service.

  • Open Car Lease vs Buy Calculator
    Car Lease vs Buy Calculator Finance

    Compare leasing and buying a car with payments, upfront costs, taxes, mileage fees, resale value, and any remaining loan balance.

  • Open Case Converter
    Case Converter Text

    Convert text between uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and more.

  • Open Catan Board Generator
    Catan Board Generator Games

    Generate Catan-style board setups with classic or 5-6 player layouts, number-token rules, resource clustering controls, and ports.

  • Open Color Contrast Checker
    Color Contrast Checker Design

    Check foreground and background colors against WCAG contrast ratios for normal text, large text, and common interface states.