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Macro Calculator
Calculate your daily protein, carbs, and fat targets in grams and calories from your body weight, height, age, activity level, diet style, and weight goal.
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Binge-Watch Time Calculator
Calculate how many hours a TV show takes to binge-watch and get your exact finish date from episode count, episode length, daily viewing hours, and schedule.
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ID Collision Probability Calculator
Estimate the probability of a collision when generating random UUIDs, ULIDs, or short codes, and find how many IDs you can safely generate before risk grows.
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CSS clamp() Fluid Typography Calculator
Generate a fluid CSS clamp() font-size declaration that scales smoothly between two viewport widths, with rem conversion and a breakpoint preview table.
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Stopping Distance Calculator
Calculate your vehicle's reaction distance, braking distance, and total stopping distance from speed, reaction time, road condition, and vehicle type.
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HTTP Cache-Control Header Calculator
Build a valid HTTP Cache-Control header from max-age, s-maxage and revalidation options, and see a plain-English explanation of what each directive does.
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Text Spacing Accessibility Calculator
Check whether your line height, letter spacing, word spacing, and paragraph spacing meet WCAG 2.1 Success Criterion 1.4.12 minimums for accessible text.
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CSS Specificity Calculator
Calculate the CSS specificity of multiple selectors at once. Compare ID, class, and element weights side by side to see exactly which style rule wins.
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IP Subnet Calculator
Calculate the network address, broadcast address, subnet mask, wildcard mask, and usable host range for any IPv4 address and CIDR prefix, instantly and free.
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Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio (WHR) from waist and hip measurements to assess body fat distribution and your cardiovascular health risk instantly.
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Parking Cost Calculator
Estimate total parking costs across multiple days using hourly rates, daily rate caps, and discounts to budget trips or monthly parking expenses accurately.
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Zodiac Compatibility Calculator
Enter your birth date and a partner's to find your Western zodiac signs, then get an element-based compatibility score, traits, and the reason for the match.
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