Engineering & Technical

CNJ Lawsuit Number Validator Validate and decode a Brazilian unified lawsuit number — court, segment, year and origin — in your browser. Paint Calculator Work out how many litres of paint a room needs and which cans to buy — right in your browser. Procedural Deadline Calculator (CPC) Count a CPC procedural deadline in business days or calendar days from the date of service, with Brazilian national holidays excluded. Wire Gauge Converter (AWG ↔ mm²) Convert between AWG and mm² wire sizes, with diameter and indicative ampacity for copper conductors. Late Payment Interest Calculator Calculate interest and penalty on overdue payments using Brazilian legal standards — 1% per month plus a 2% fine. Legal Amount in Full (Portuguese) Write a monetary amount in full in the Brazilian legal format — for contracts, checks and notarial acts. Concrete Calculator Calculate the volume of concrete for a slab, beam or column — and how many bags of cement, sand and gravel to buy. Ohm's Law Calculator Fill in any two of voltage, current, resistance and power — the other two are calculated instantly. Resistor Color Code Calculator Select the color bands on a resistor to read its resistance and tolerance — or find the colors for a known value. Voltage Divider Calculator Calculate the output voltage of a resistive voltage divider from Vin, R₁ and R₂. Series & Parallel Resistor Calculator Add resistors and see the total resistance in series and in parallel — for any number of resistors. Standby Power Cost Calculator See how much a device costs per year just by being plugged in — in watts, kWh and reais. UPS / Nobreak Capacity Calculator Find the minimum VA rating for a UPS to handle your load, based on watts and power factor. Plant Spacing Calculator Calculate how many plants or trees fit in an area based on row and plant spacing. Lawn Seed Calculator Calculate how much grass seed you need for a given area — with typical rates for common species. NPK Fertilizer Calculator Calculate how much fertilizer product to apply based on the N-P-K ratio, the nitrogen requirement and the area.