Free practical calculators
Browse all 90 Vaelden tools for making, building, cooking, energy and project planning.
๐ Pizza DoughA complete dough recipe, reality check and fermentation plan.๐ฅฃ Recipe ScalerScale a complete ingredient list to a new yield.๐ป Batch PlannerPlan strength, carbonation, packaging and the next practical steps in one place.๐ฅ Spirit DilutionWater addition for a target ABV.๐บ ABVEstimate ABV from gravity readings.๐ซง Priming SugarEstimate bottle-conditioning sugar by sugar type.๐งฉ Print Job PlannerPlan true cost, reliability and selling price in one guided workflow.๐จ๏ธ Print CostMaterial, power, machine, labour, waste and margin.๐งต Filament UsageConvert mass to length and spool use.๐ Print ProfitProfit, margin and markup.โก EV ChargingGrid energy and charging cost.๐ Running CostDaily, monthly and annual electricity cost.โ๏ธ Alcohol BlendingCombine two liquids and calculate the resulting strength.๐ก๏ธ Hydrometer TemperatureCorrect a specific-gravity reading for sample temperature.๐ Gravity ConverterConvert specific gravity and degrees Plato in either direction.โจ๏ธ Pre-boil VolumePlan kettle volume from target batch size, boil time, evaporation and losses.๐ญ Batch ProductionPlan material, machine time, spools and production days for a print run.๐ฏ Printer Break-evenCalculate how many profitable sales are needed to recover equipment and setup costs.๐งพ Tariff ComparisonCompare two electricity plans using your daily peak and off-peak consumption.๐ Battery RuntimeEstimate usable runtime from battery capacity, reserve level, load and inverter losses.๐ Cut List PlannerEstimate total stock length, waste and stock pieces before cutting.๐ช Board Foot CalculatorConvert board dimensions and quantity into board feet and cubic volume.โฆ Sheet Goods EstimatorEstimate sheet count from panel sizes, quantity and layout efficiency.๐ฐ Timber Cost PlannerEstimate timber spend from required length, waste and supplier price.๐๏ธ Finish CoverageEstimate finish quantity from surface area, coats, coverage and waste.๐งด Glue CoverageEstimate adhesive quantity for panels, laminations and veneering.๐ฉ Fastener SpacingEstimate screw or nail count along repeated runs.๐ผ๏ธ Frame Stock PlannerEstimate moulding length for rectangular frames including waste.โ๏ธ Timber MovementEstimate seasonal width movement from moisture change and species coefficient.โ๏ธ Panel WeightEstimate the weight of solid timber or sheet-material panels.ฮฉ Ohm's LawCalculate resistance and power from voltage and current.โ๏ธ Electrical PowerRelate voltage, current, power factor and apparent power.โ๏ธ Voltage DropEstimate conductor voltage drop from current, length and resistance.ใฐ๏ธ Wire ResistanceEstimate conductor resistance from resistivity, length and area.๐ Battery RuntimeEstimate runtime from capacity, voltage, load and usable depth.โ Series ResistorsCalculate total resistance and current for three resistors in series.โฅ Parallel ResistorsCalculate equivalent resistance and total current for three branches.๐ก LED Series ResistorEstimate a current-limiting resistor for a simple LED circuit.๐ Transformer RatioEstimate ideal secondary voltage and current from a turns ratio.๐ Energy UseEstimate consumption and cost from power, duty cycle and run time.๐ชด Soil VolumeEstimate soil for beds, planters and top-ups.๐ Mulch QuantityCalculate mulch volume from area and depth.โป๏ธ Compost AmendmentEstimate compost to blend through a soil layer.๐ฟ Plant SpacingEstimate plant count for regular rows.๐ง Irrigation RuntimeEstimate runtime from target water depth and flow.๐ง๏ธ Rainwater HarvestEstimate roof runoff captured from rainfall.๐งช Fertiliser ApplicationCalculate product mass from area and label rate.๐พ Lawn SeedEstimate lawn seed from area and sowing rate.๐ชด Potting MixEstimate mix for round pots or containers.๐ฅ Bed Yield PlannerEstimate total harvest from plants and yield assumptions.๐จ Paint QuantityEstimate paint for walls or ceilings.๐ชต Flooring PacksEstimate floor area and pack count.โป๏ธ Tile QuantityEstimate tile count with grout joints and waste.๐ Wallpaper RollsEstimate rolls from wall dimensions and repeat.๐งค Insulation PacksEstimate insulation packs for a surface area.โญ Plasterboard SheetsEstimate sheet count for walls or ceilings.๐ชต Decking BoardsEstimate board lengths from deck dimensions.๐ง Fence PostsEstimate posts and bays along a fence line.๐ Roofing SheetsEstimate sheet count across a simple roof plane.๐ฉ Fastener QuantityEstimate fasteners from rows, spacing and waste.โฌ Concrete SlabCalculate slab concrete volume and contingency.โ Strip FootingEstimate concrete for continuous footings.๐ณ๏ธ Post Hole ConcreteEstimate concrete for cylindrical post holes.๐งฑ Concrete BlocksEstimate block count from wall area.๐งฑ Brick QuantityEstimate bricks from wall area and brick module.๐ฅฃ Mortar VolumeEstimate wet mortar from masonry area.๐งฑ Render QuantityEstimate render volume from area and thickness.โผ๏ธ Paver QuantityEstimate pavers for a measured area.๐ชจ Aggregate QuantityEstimate gravel or crushed rock volume and mass.๐๏ธ Premix Concrete BagsConvert concrete volume into premix bag count.โฑ๏ธ Fill TimeEstimate time to fill a tank or container.๐งช Pipe VolumeCalculate water held inside a pipe run.๐ Drain FallCalculate vertical fall across a pipe run.๐ Water Pressure HeadConvert water elevation into approximate pressure.๐ข๏ธ Tank CapacityCalculate cylindrical tank capacity.๐ฟ Fixture DemandEstimate simultaneous water demand from fixtures.โ๏ธ Pump Transfer TimeEstimate pumping time from flow and efficiency.โจ๏ธ Hot Water EnergyEstimate energy to heat a water volume.๐ฆ Leak LossEstimate water lost from a measured leak rate.โก๏ธ Pipe VelocityEstimate water velocity from flow and diameter.โ๏ธ Solar ProductionEstimate daily and annual array generation.๐ Array SizeEstimate array capacity for an energy target.๐ Battery RuntimeEstimate backup runtime for a constant load.๐ Battery SizingEstimate nominal storage for a backup target.๐ Simple PaybackEstimate simple solar-system payback.๐ Self-Consumption ValueCompare using solar onsite versus exporting it.๐ Solar EV ChargingEstimate solar hours required for an EV charge.๐ Inverter CapacityEstimate inverter capacity from simultaneous loads.๐ก Backup Load BudgetEstimate daily energy for critical loads.๐ Emissions AvoidedEstimate grid emissions displaced by generation.