Calculators built to get the numbers right, not just to exist
Niche utility calculators for home improvement, hobbies, pets, and automotive decisions — each one using the actual formula behind the question, not a rounded-up rule of thumb.
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Renovation and DIY math, without the guesswork — how much paint, flooring, concrete, wallpaper, or roofing material a job actually needs, and how much pipe a heated floor takes to install. Each calculator uses the same honest, verified formula a professional would, not a rounded-up rule of thumb.
8 calculatorsPrecise math for hands-on hobbies where getting the numbers right actually matters — cold-process soap lye ratios, epoxy resin mixing, aquarium stocking limits, and diluting home-distilled spirits to the right strength. Built for the specific communities that need them, not a generic one-size-fits-all tool.
5 calculatorsCalculators for feeding and caring for pets, based on veterinary formulas rather than a generic feeding chart — starting with how much food your dog actually needs per day, by weight, life stage, and the food's own calorie density.
1 calculatorsCalculators for car and wheel decisions — starting with how a tire size swap changes your overall wheel diameter, speedometer accuracy, and ground clearance, before you buy.
3 calculatorsCalculators for developer and AI-tool spending decisions — starting with finding the cheapest combination of AI subscriptions that actually covers what you need them for, instead of just adding up whatever you've already picked.
3 calculatorsCalculators for hosting spending decisions — starting with filtering real VPS plans from 11 real providers by country, vCPU, RAM, storage, bandwidth, and IPv4, instead of manually comparing pricing pages one by one.
1 calculatorsPrecise, no-guesswork math for the kitchen — starting with converting your favorite oven recipe's temperature and time into the right air fryer settings, using a rule cross-checked against both English- and Russian-language cooking sources, not a made-up shortcut.
1 calculatorsCalculators for personal finance decisions, with the sourced formula and any assumptions spelled out instead of hidden behind a lead-generation form — starting with exactly how much interest and time you save by paying extra toward a mortgage.
2 calculatorsCalculators for grades and coursework — starting with a weighted grade average, per-subject breakdown, test-score-to-grade conversion, and a live solver for exactly what you need on a remaining assignment to hit a target average.
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