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useful tool.

Screen a room air-conditioner capacity range from area, ceiling height, sun exposure, and occupancy.

Calculate dew point and place an indoor relative-humidity reading in useful context.

Compare electricity costs for up to twelve appliances, model daily schedules, and estimate savings with your own rate.

Estimate paint, flooring, tile, or drywall purchase units with explicit coverage, coats, and waste assumptions.

Turn visible refrigerator, washer, or dishwasher symptoms into the next safe external check.

Screen continuous and starting-watt capacity from the loads you plan to run, the largest startup surge, and visible headroom.

Estimate portable-power runtime from rated watt-hours, conversion efficiency, reserve, load, and duty cycle.

Separate device, coverage, congestion, visibility, and upstream internet patterns with controlled follow-up tests.

Convert file units and Mbps into a transparent download estimate with an explicit effective-rate assumption.

Plan working photo and video data, independent copies, and headroom without hiding file-size assumptions.

Estimate copy time from decimal file size and observed sustained throughput rather than interface marketing speed.

Calculate pixel density, physical panel dimensions, and pixels per degree from resolution, size, and viewing distance.

Balance aperture, shutter speed, and ISO while seeing how each choice changes depth, motion, and noise.

Weight cataloging, tethering, layers, mobile access, and cost to find the editor that fits your workflow.

Turn your goal, scope, and acceptance criteria into a clear Markdown task brief locally in your browser.

Draft AGENTS.md or CLAUDE.md from the project facts and boundaries you supply, without inventing commands.

Calculate a percentage, the share of a whole, or the signed percentage change between two values.

Find the discount amount, sale price, optional sales tax, and final price before checkout.

Calculate a tip, total bill, and equal per-person share without losing cents to guesswork.

Count elapsed calendar days and weeks between two dates without daylight-saving-time drift.

Convert common length, mass, volume, and temperature units through transparent SI-based formulas.

Estimate fixed monthly principal-and-interest payments, total repayment, and total interest.

Model hypothetical compound growth with a starting amount and monthly contributions.

Estimate trip fuel use and cost with either MPG or litres per 100 kilometres.

Calculate completed years, months, days, and total elapsed days on a chosen date.

Add a known sales-tax rate and separate the pre-tax price, tax amount, and checkout total.

Convert an hourly rate into weekly, monthly, and annual gross pay using explicit schedule assumptions.

Calculate a credit-weighted grade point average using the scale supplied by your school.

Resize an ingredient amount from the original yield to a new number of servings.

Screen adult body mass index in US or metric units with visible CDC category boundaries.

Count hours between a start and end time, subtract unpaid breaks, and get payroll-ready decimal hours.

Estimate a monthly mortgage payment with principal, interest, property tax, insurance, and HOA dues shown separately.

Find the score you need on a weighted final exam to reach your target course grade.

Add hours and minutes across up to four entries and convert the total into decimal hours.

Work backward from a wake-up time in 90-minute sleep cycles to compare candidate bedtimes.

Calculate the area of a rectangle, circle, or triangle in feet and turn it into a material cost.

Estimate resting and total daily calorie needs with the Mifflin-St Jeor equation and explicit activity factors.