Free tools
Small, useful tools that run in your browser. Each one does one job well: the converters save their result to your free ParrotNotes account, so it is there when you install the app, and the calculators keep everything on your screen.
- EstimatingSealcoating CalculatorWork out how much sealer, sand and crack filler a driveway or parking lot needs from its area and coats, with drums or pails and the job cost.Open the tool
- EstimatingGutter CalculatorSize gutters and downspouts for a roof from its area, pitch and local rainfall, and count the linear feet, downspouts, hangers and cost for the job.Open the tool
- EstimatingEV Charging Cost CalculatorWork out what it costs to charge an electric car at home or at a public charger, per charge, per mile and per month, and compare it with gas.Open the tool
- SalesInvoice Due Date CalculatorFind an invoice's due date from its date and payment terms (net 30, net 60, EOM), the early payment discount on terms like 2/10 net 30, and how many days are left.Open the tool
- EstimatingLumens CalculatorWork out the lumens a room needs from its size and use, then the number of fixtures or bulbs, with foot-candles or lux and a watts-to-lumens check.Open the tool
- EstimatingkVA CalculatorConvert between kVA, kW and amps for single-phase and three-phase power, and size a transformer for a load with headroom.Open the tool
- EstimatingSEER Savings CalculatorCompare the cooling cost of an old and a new air conditioner or heat pump by SEER or SEER2 rating, with yearly savings and the payback on the price difference.Open the tool
- EstimatingFertilizer CalculatorWork out how much fertilizer to spread for a lawn or bed from the N-P-K on the bag, the area and the nitrogen rate you want, with bags needed and cost.Open the tool
- EstimatingBox Fill CalculatorWork out the box fill for an electrical box from its conductors, devices, clamps and grounds under NEC 314.16, and the smallest box that fits.Open the tool
- EstimatingBolt Torque CalculatorWork out the tightening torque for a bolt from its diameter, grade and friction (nut factor), with the clamp load it gives, in imperial or metric units.Open the tool
- EstimatingHeat Pump Size CalculatorEstimate the heat pump size a home needs in BTU and tons from its floor area, climate zone and insulation, before a full Manual J load calculation.Open the tool
- EstimatingSpray Foam CalculatorEstimate how many board feet and sets of open or closed cell spray foam a job needs from the area and depth, with the R-value you get.Open the tool
More tools are on the way. Have one in mind? Tell us at support@parrotnotes.app.