No signup. No upload to anyone's server. No "free trial that becomes a subscription." Just instant tools that solve one specific problem each, fast — for sellers, developers, Minecraft builders, and anyone who'd rather not hand over their email for a calculator.
Concrete, block, brick, pavers and the materials under them — volumes, unit counts and mortar computed from geometry with the working shown. Quantities for a design you already have; structural decisions follow your plans, local code, and an engineer where required.
Soil, mulch, stone, sod, seed and water — quantities computed live from area, depth and geometry, with densities and coverage figures stated honestly and always editable. No baked-in prices: cost fields run on the rates you type in.
Pipes, wells and water heaters — flow, volume, sizing and weight from the published formulas, with every assumption visible. Gas pipe and pressure-tank results are planning aids: installation follows local code and a licensed professional.
Estimators for finishing and conditioning the house — paint, tile, flooring and wallpaper by the room, roofs by pitch and area, stairs by rise and run, and the heating, airflow and fuel math behind comfortable rooms — each with the real units, waste allowance and the formula shown.
Size a solar setup, convert battery units, and check runtimes — for vanlife, RVs, off-grid cabins, and backup power. Uses the same formulas installers do, with the assumptions shown so you can adjust them.
Decode resistors, size wire and conductors, check voltage drop, and solve Ohm's law — bench-and-field references for hobby electronics, automotive, and low-voltage DC. Every value is computed live in your browser, with the formula shown so you can check it.
Work out what your rig can really tow and how to balance the trailer — from your own door-jamb sticker numbers, with the binding limit named and the physics shown. Nothing is looked up and nothing is sent anywhere.
Turn a surface speed into spindle RPM and a feed rate for any chip-making operation — from your own SFM and chip load, with the right feed math per operation and the physics shown. A starting point you tune, computed from public formulas, not a copied cutting-data chart.
Saw-angle math for trim and joinery — worked out with the correct compound-angle geometry, so the numbers hold up on out-of-square corners and sloped-side boxes, not just the textbook 90°.
Turn box dimensions into the weight carriers actually bill you for. Both tools show the working — divisor, rounding, and which weight wins — so you can check a quote instead of trusting it.
Builds, math, design, and planning for Minecraft players — build templates that don't fit a square grid, plus calculators and designers that save real time at the loom, anvil, and enchanting table.
Fee calculators and formatting utilities, country-aware where it matters.
Replace paid Shopify apps with free, browser-only equivalents.
Browser-based utilities for everyday dev work. No data leaves your device — safe for timestamps from private logs or production secrets.
<t:UNIX:F> tags for Discord messages. All seven format codes with live previews. Each viewer sees the time in their own zone, automatically.